JP2011012057A - Method for cleansing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for cleansing skin by which removing effects on hard solid stains formed in pores, in particular, keratotic plugs are excellent without requiring much time.SOLUTION: The method for cleansing skin includes following steps (A) and (B): (A) a step of applying over the skin to be accustomed an agent comprising a water-soluble solvent, a surfactant, and water, wherein a continuous phase comprises an aqueous phase; and (B) a step of applying over the skin to be accustomed an agent, wherein the continuous phase comprises an oily phase. In the method for cleansing the skin, the step (B) is carried out subsequent to the step (A).

Description

  The present invention relates to a method for cleaning skin.

One of the top women's skin problems is the conspicuous pores. This is largely due to dirt formed in the pores (from soft butter-like dirt to hard solid dirt (for example, square plugs)). These pore dirt is harder to remove than the dirt on the skin surface. However, leaving the pores dirty causes not only the conspicuous pores but also acne and various skin problems. Therefore, removal of pore dirt is preferable in terms of beauty and skin health.
Conventionally, as a method for removing hard solid stains formed on pores, especially square plugs, a method of sticking a sheet agent to the skin or applying a pack agent and then peeling off the sheet agent and pack agent has been proposed. (See Patent Documents 1 and 2).
Further, as a method for removing the horn plug, a method of massaging the skin using a cosmetic having an oil component with a predetermined viscosity has been proposed (see Patent Document 3).

JP-A-9-194325 JP-A-8-109119 Japanese Patent Laid-Open No. 2002-241260

However, the conventional methods have the following problems.
In Patent Document 1 and Patent Document 2, a sheet agent is applied to the skin, or pores are wrapped with a pack agent, and a square plug that is a dirt on the pores is adsorbed thereto, and then the sheet agent or pack agent is peeled off, At the same time, remove the plug. This method is troublesome in that it is necessary to dry a sheet agent or a pack agent after being attached to the skin and before peeling.
In addition, the method described in Patent Document 3 utilizes the effect that the oil component of the main base dissolves the horn plug, and although there is a certain degree of horn plug removal effect, it is sufficient to remove the horn plug fundamentally. It was not satisfactory.

  The present invention provides a method for cleaning skin that is excellent in the effect of removing hard solid stains formed on pores, particularly square plugs, and does not require labor.

The inventor
(A) After the step of washing the skin with an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase comprising an aqueous phase,
(B) By washing the skin in the step of washing the skin with an agent whose continuous phase is an oil phase,
It has been found that it is possible to obtain a skin cleaning method which is excellent in the effect of removing hard solid stains formed on pores, particularly horn plugs, and does not require labor.

That is, the present invention
(A) a step of adapting to the skin an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase comprising an aqueous phase;
(B) including a step of allowing the skin to be blended with an agent whose continuous phase is an oil phase,
The present invention provides a method for cleaning the skin, wherein the step (B) is performed after the step (A).
The present invention also provides:
(A) a step of adapting to the skin an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase being an aqueous phase;
(C) a step of adapting an agent composed of an isotropic one liquid phase containing an oil agent, a surfactant, a water-soluble solvent, and water, each of the oil phase and the aqueous phase being a continuous phase, to the skin;
(B) including a step of allowing the skin to be blended with an agent whose continuous phase is an oil phase,
After the step (A), a method for cleaning the skin is performed by performing the step (C) and then performing the step (B).
Furthermore, the present invention provides (A) an O / W emulsion comprising an oil agent, a compound having 1 to 2 hydroxyl groups, a compound having 2 to 6 carbon atoms, a surfactant, and water, wherein the continuous phase is an aqueous phase. The process of applying the agent to the skin,
(C) A process of evaporating moisture from the agent, changing the phase to an isotropic one liquid phase in which the oil phase and the aqueous phase are each a continuous phase, and adapting the agent consisting of the isotropic one liquid phase to the skin. When,
(B) Further, the method comprises the steps of: evaporating moisture from the agent composed of one isotropic liquid phase, changing the continuous phase to an oil phase, and allowing the agent composed of the oil phase to conform to the skin. A cleaning method is provided.

  ADVANTAGE OF THE INVENTION According to this invention, the washing | cleaning method of the skin which is excellent in the removal effect of the hard solid stain | pollution | contamination formed in a pore, especially a square plug, and does not require an effort is provided.

It is a phase state diagram of the cleansing composition of a third embodiment. It is a phase state diagram of the cleansing composition of a third embodiment. It is a phase state diagram of the cleansing composition of a third embodiment.

There are three methods as embodiments.
(First embodiment)
The cleaning method according to the first embodiment is as follows:
Step (A): a step of washing (washing) an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase being an aqueous phase, onto the skin;
Step (B): including a step of allowing the skin to blend (wash) an agent whose continuous phase is an oil phase,
After the step (A), the step (B) is performed to clean the skin.

In the first embodiment of the present invention, an agent in which the continuous phase is an aqueous phase is first applied onto the skin and blended into the skin (step (A)), and then the agent in which the continuous phase is an oil phase. Is applied onto the skin and blended into the skin (step (B)). According to this method, it is excellent in the effect of dissolving hard solid stains formed in pores, particularly square plugs, and the effect of removing square plugs is enhanced.

(Process (A))
In the step (A) of the present invention, an agent comprising a water-soluble solvent (component (a)), a surfactant (component (b)), and water (component (c)), wherein the continuous phase is an aqueous phase is applied to the skin. It is a process of applying to the skin and blending the agent with the dirt on the skin.
The compound of component (a) used in the step (A) of the present invention is a water-soluble solvent, monovalent or divalent alcohol having 2 to 6 carbon atoms, and polyethylene glycol having 2 to 35 carbon atoms. Any of polypropylene glycols is preferred. From the viewpoint of high detergency, specifically, monohydric alcohols having 2 to 6 carbon atoms such as ethanol, propanol, isopropanol, butanol, isobutanol; ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, Glycols having 2 to 6 carbon atoms such as 1,3-butylene glycol, 1,4-butylene glycol, hexylene glycol, isoprene glycol and the like, and ethylene glycol alkyl ethers such as diethylene glycol monoethyl ether Kind.
As the polyethylene glycols or polypropylene glycols, polyethylene glycols and polypropylene glycols having a molecular weight of 1000 or less can be used. For example, diethylene glycol, dipropylene glycol, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, polyoxypropylene (9) diethylene glycol. Examples thereof include glyceryl. Of these, dipropylene glycol, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, particularly dipropylene glycol and diethylene glycol monoethyl ether are preferred because of their good cleaning performance against oily and water-soluble soils.
Of these, glycols having 2 to 6 carbon atoms are preferred, and glycols having 3 to 6 carbon atoms are particularly preferred, from the viewpoint of easy adaptability to pores. For example, 1,3-butylene glycol, isoprene glycol, propylene glycol, and dipropylene glycol are excellent in removal performance of square plugs.

  As the component (a), one or more compounds can be used, and from the viewpoint of detergency against oily soil and water-soluble soil, 10% by weight or more, preferably 15% by weight or more, and further 18% by weight in the total composition. From the viewpoint of usability, it is preferable to contain 50% by mass or less, particularly 40% by mass or less.

  Component (b) is a surfactant, and nonionic surfactants, anionic surfactants, and amphoteric surfactants can be used.

Among these, from the viewpoint of detergency, the component (b) is preferably a nonionic surfactant, and is composed of a mixed surfactant composed of one nonionic surfactant or two or more nonionic surfactants. The HLB of the one kind of nonionic surfactant or the mixed surfactant is 10 or more and 18 or less.
By setting the HLB of the mixed surfactant of component (b) to 10 or more and 18 or less, the detergent composition can be made into a solubilization system or an O / W emulsion.

Here, HLB (hydrophilic-lipophilic balance <Hydrophilic-Lypophilic Balance>) indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and the polyoxyethylene nonionic surfactant Is obtained by the Griffin equation.
In addition, HLB of the mixed surfactant composed of two or more kinds of nonionic surfactants is obtained as follows.
When there are a plurality of nonionic surfactants, the HLB values of the respective nonionic surfactants are averaged by phase addition based on the blending ratio.
Mixed HLB = Σ (HLBx × Wx) / ΣWx
HLBx indicates the HLB value of the nonionic surfactant X.
Wx indicates the weight (g) of the nonionic surfactant X having a value of HLBx.

The nonionic surfactant of component (b) used in the present invention comprises, for example, a fatty acid ester having 8 to 22 carbon atoms or an ether of a higher alcohol having 8 to 22 carbon atoms from the viewpoint of detergency against oily soil. It is preferable that the hydrophilic functional group has a hydroxyl group or an ethylene oxide group.
Specifically, polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, propylene glycol fatty acid ester, polyoxyethylene polyoxypropylene glycol, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit Fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, polyalkyl glyceryl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ether fatty acid ester, sucrose fatty acid ester, alkyl Polyglucoside, (poly) alkyl glyceryl ether, etc. are mentioned.

Among them, from the viewpoint of detergency, polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbit fatty acid ester, (poly) alkyl glyceryl ether, polyoxyethylene alkyl ether, sucrose fatty acid ester, Alkyl polyglucosides are excellent.
In particular, diglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbit fatty acid ester, (poly) alkyl glyceryl ether, and alkyl polyglucoside are preferable in terms of detergency against oily soil.

  Among them, from the viewpoint of high detergency against horn plug stain and fresh feeling of use, monooleic acid diglycerin (HLB7), monoisostearic acid diglycerin (HLB8), polyoxyethylene (8) glyceryl monoisostearate ( HLB9), tetraoleic acid polyoxyethylene sorbitol (HLB11), polyoxyethylene (7) coconut oil fatty acid glycerin (HLB13), monolauric acid (12) polyethylene glycol (HLB14), C8-16 alkyl glucoside (HLB17) 2-ethylhexyl glyceryl ether (HLB7) is preferable and can be used alone or in combination.

These components (b) are preferably used in combination of two or more nonionic surfactants having a high HLB and nonionic surfactants having a low HLB for the purpose of further improving the stability.
In other words, it is preferable that the difference between the highest HLB and the lowest HLB of the two or more kinds of nonionic surfactants mixed is 5 or more, particularly 7 or more, thereby improving the stability of the cleaning composition. Excellent to increase.

  The content of the component (b) is preferably 1% by mass or more and more preferably 5% by mass or more in the total composition from the viewpoint of detergency against oily soil and water-soluble soil. From the viewpoint of usability, the content of the component (b) is preferably 50% by mass or less, more preferably 40% by mass or less, and further preferably 32% by mass or less in the entire composition.

  It is preferable that the component (c) water used in the present invention constitutes the balance and is contained in an amount of 20 to 70% by mass in the entire composition. Furthermore, it is preferable to contain 30-60 mass% and 38-56 mass%.

  In this cleaning agent, commonly used components such as oil agents, thickeners, bactericides, moisturizers, wetting agents, coloring agents, preservatives, touch-improving agents, perfumes, antioxidants, various extracts Etc. can be contained as appropriate.

  By doing in this way, as a dosage form in which the continuous phase is an aqueous phase, the outer phase may be an aqueous phase. Specifically, a solubilization system, an O / W emulsion, or the like can be used.

(Process (B))
The step (B) of the present invention is a step of applying an agent comprising an oil phase as a continuous phase to the skin so as to blend in with the dirt on the skin.
The agent whose continuous phase is an oil phase preferably contains an oil agent as the component (d).
The oil of component (d) used in the step (B) of the present invention is preferably liquid at room temperature and has a viscosity at 30 ° C. of 30 mPa · s or less. Here, the viscosity is measured with a BM viscometer (manufactured by Tokimec, measurement conditions: rotor No. 1, 60 rpm, 30 ° C.).
Such low viscosity oils have high penetrability in fine parts and high solubility of dirt, so they are excellent for cleaning hard solid dirt formed in pores, especially dirt such as square plugs. Have power. In particular, from the viewpoint of alleviating oiliness and providing an appropriate feeling of use, the component (d) having a low viscosity at 30 ° C. of 10 mPa · s or less is not accompanied by a strong oily feeling and feels good. Is also good.

  As such an oil agent, liquid oils usually used in cosmetics can be used, for example, hydrocarbon oils such as liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, squalane; isostearic acid cholesteryl ester, isopropyl palmitate, myristic acid. Isopropyl, neopentyl glycol dicaprate, isopropyl isostearate, octadecyl myristate, cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, tri (2-ethylhexanoate) glycerin, tri (caprylic acid / capric acid) glycerin Ester oil such as alkyl ether ether such as alkyl-1,3-dimethylbutyl ether and nonylphenyl ether; Decamethylcyclopentasiloxane, octamethylcyclotetrasiloxane, etc. And the like can be used terpene oil; animal and vegetable oils such as olive, methylcyclopentane polysiloxane, methyl polysiloxane, silicone oils such as methyl phenyl polysiloxane.

  Of these, oil agents having a molecular weight of 300 or less are preferable because of their high detergency. Specific examples include hydrocarbon oils such as light liquid isoparaffin and hydrogenated polyisobutene, ester oils such as isopropyl myristate, isopropyl palmitate and isononanoyl isononanoate, and silicone oils such as octamethyltrisiloxane and octamethylcyclotetrasiloxane. It is done. In particular, branched hydrocarbon oils having 8 to 18 carbon atoms are preferred, and isododecane is preferred.

  Moreover, the oil agent of a component (d) may be formed with mixtures, such as hydrocarbon oil, ester oil, and silicone oil. In this case, it is preferable to contain 30% or more of isoparaffin in the component (d) from the viewpoint of solubility in the square plug. From the viewpoint of odor, it is preferable not to contain hydrocarbons having 8 to 9 carbon atoms.

As hydrocarbon oils, Marcazole R (Maruzen Petrochemical Co., Ltd.), IP Solvent 1620, 2028 (Idemitsu Petrochemical Co., Ltd.), Isopar L, Isopar H (Exxon Chemical Co., Ltd.), Isosol 300, 400 (trade name) are used. As mentioned above, Marcazole R is particularly preferably used because it contains isododecane with high purity.

  The oil agent of component (d) is contained in the whole composition in an amount of 50% by mass or more and 100% by mass or less from the viewpoint of detergency. Especially, it is preferable to contain 70 to 99 mass%. By doing in this way, it can have an excellent cleaning power quickly.

  In this cleaning agent, a commonly used component, for example, a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant for the purpose of imparting washability, a water-soluble solvent, Thickeners, bactericides, moisturizers, wetting agents, colorants, preservatives, feel improvers, fragrances, antioxidants, various extracts, water, and the like can be appropriately contained.

  As a dosage form in which the continuous phase is the oil phase, the outer phase may be an oil phase. Specifically, an oil system, a W / O emulsion, a mixture of oil and a surfactant, or the like can be used.

In the first embodiment of the present invention, when an agent whose continuous phase is an aqueous phase is first adapted to the skin (step (A)), dirt around the pores and metabolites from the skin can swell, This makes it easier to remove dirt on the surface layer. Next, in the step (step (B)) in which the agent whose continuous phase is the oil phase is applied to the skin, the solid solid oil in the pores is dissolved by the component (d) and is formed into a hard solid It is excellent in the effect of dissolving the dirt, especially the horn plug, has little irritation to the skin, and increases the horn plug removal effect.

After the step (A), the skin may be washed with water and then the step (B) may be performed, but immediately after the agent of the step (A) is attached to the skin, the step (B) is performed. It is preferable to implement. By doing in this way, the dirt of a pore can be removed reliably.
Here, the conventional technical level will be described. Conventionally, in the case of washing the skin, first, an oil agent is applied to the skin to make the make-up etc. and the oil agent familiar. Then, after washing | cleaning an oil agent with water and removing an oil agent from skin, the skin is again wash | cleaned with the cleaning agent in which a continuous phase is comprised with an aqueous phase.
It is considered that it is effective to float the make-up etc. in advance with an oil agent because it is difficult to blend in with stains containing fat such as make-up and cleaning agents in which the continuous phase is composed of an aqueous phase. Yes. In this case, the makeup or the like can be removed, but it is difficult to remove even dirt on the pores.
On the other hand, the present inventor cleans the skin by a procedure reverse to the conventional cleaning method, that is, the skin is cleaned in advance with an agent in which the continuous phase is an aqueous phase, and then the continuous phase is oil. It has been found that by washing the skin with an agent composed of a phase, the solid oil inside the pores can be dissolved to remove hard solid stains formed on the pores, in particular, horn plugs. By using an agent in which the continuous phase is composed of an aqueous phase in advance, it becomes easier to remove dirt on the surface layer such as around the pores, so that the cleaning agent in which the continuous phase is the oil phase can act more on the inside of the pores. It is considered that dirt inside the pores can be surely removed.
Furthermore, in this embodiment, since the agent (cleaning liquid) is familiarized with the skin in each step, it is less irritating than the method using a conventional sheet or pack, and for drying the sheet or pack. Save time and effort.
After the step (B), (D) a step of adding water and removing the agent from the skin is performed. As a result, the cleaning agent is removed from the skin together with the square plug. The agent used in the step (A) and the agent used in the step (B) are removed from the skin and do not penetrate into the skin.

(Second embodiment)
Next, a second embodiment of the present invention will be described.
The skin cleaning method of the present embodiment is:
(A) a step of rinsing (washing) an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase being an aqueous phase;
(C) a process of washing (washing) an agent composed of an isotropic one liquid phase containing an oil agent, a surfactant, a water-soluble solvent, and water, each of the oil phase and the water phase being a continuous phase;
(B) The process of (C) is performed after the process of (A), and the process of (B) is performed after the process of (A) including the process in which the agent which an oil phase consists of an oil phase is carried out. This is a method for cleaning dirt on the skin.

  In the second embodiment of the present invention, an agent whose continuous phase is an aqueous phase is first adapted to the skin, then an agent which is an isotropic one-liquid phase is adapted to the skin, and the continuous phase is an oil phase. It is a method of applying the agent to the skin, and is excellent in the effect of dissolving hard solid stains formed in pores, particularly horn plugs, and the effect of removing horn plugs is enhanced.

  The agent (cleaning liquid) used in the step (A) and the step (B) can be the same as in the first embodiment.

The agent (cleaning liquid) used in the step (C) of the present invention contains an oil agent, a surfactant, a water-soluble solvent, and water, and is composed of an isotropic one-liquid phase. The isotropic one liquid phase generally includes a micellar solution, but the isotropic one liquid phase referred to here is a state in which one or both of the aqueous phase and the oil phase are solubilized. Both of these are solubilized so that each of the aqueous phase and the oil phase becomes a continuous phase, and an optically isotropic transparent or translucent liquid phase is called a bicontinuous phase. An agent consisting of an isotropic one-phase liquid solubilized on both sides (cleaning solution) has high wettability and is effective in dissolving hard solid stains formed in pores, especially square plugs, and dissolving square plugs. Can be increased.
For example, the cleaning composition disclosed in JP 2004-217640 A, JP 2008-184413 A, and JP 2008-184414 A can be used.

For example,
(E) Oil agent 3-80% by mass, (f) Hydrophilic nonionic surfactant 1-45% by mass, (g) Lipophilic amphiphilic substance 1-45% by mass, (h) Water-soluble solvent 3-80 A cleaning composition containing 2% by mass and (i) 3-80% by mass of water and composed of a bicontinuous phase can be used.

As the oil agent of component (e), liquid oil can be used, for example, hydrocarbon oil such as liquid paraffin, liquid isoparaffin, squalane; isostearic acid cholesteryl ester, isopropyl palmitate, isopropyl myristate, neopentyl glycol dicaprate, Ester oils such as isopropyl isostearate, octadecyl myristate, cetyl 2-ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, tri (2-ethylhexanoic acid) glycerol, tri (caprylic acid / capric acid) glycerol; alkyl-1 Ether oils such as 1,3-dimethylbutyl ether and nonylphenyl ether; methylcyclopolysiloxanes such as decamethylcyclopentasiloxane and octamethylcyclotetrasiloxane; And the like can be used terpene oil; animal and vegetable oils such as olive, siloxanes, silicone oils and methyl phenyl polysiloxane.
Furthermore, the thing whose viscosity in 25 degreeC is 30 mPa * s or less is preferable. The viscosity is measured with a BM viscometer (manufactured by Tokimec, measurement conditions: rotor No. 1, 60 rpm).

  Among these, liquid paraffin, liquid isoparaffin, neopentyl glycol dicaprate, isopropyl isostearate, cetyl 2-ethylhexanoate, isononyl isononanoate, tri (caprylic acid / capric acid) glycerin, alkyl-1,3-dimethylbutyl ether, Decamethylcyclopentasiloxane and octamethylcyclotetrasiloxane are preferred, particularly liquid isoparaffin, tri (caprylic acid / capric acid) glycerin, alkyl-1,3-dimethylbutyl ether, and decamethylcyclopentasiloxane are preferred, and fluidized. Isoparaffin is preferred. As the liquid isoparaffin, hydrogenated polyisobutene is particularly preferred, and those having a degree of polymerization of isobutene of 3 to 6 are more preferred from the viewpoint of cleaning performance against oily soil.

Two or more kinds of component (e) can be used, and 3 to 80% by mass, preferably 5 to 65% by mass, more preferably 7 to 56% by mass, and further 14 to 16% by mass in the total composition. The When it is 3% by mass or more, the cleaning action for oily stains is sufficient, and furthermore, the rinsing property can be improved, and when it is 80% by mass or less, the cleaning action for water-soluble stains is good. It becomes.

  As the hydrophilic nonionic surfactant of the component (f), those having an HLB of more than 8 are preferable, and those having an HLB of 9 or more and 20 or less are particularly preferable. More specifically, it is HLB11-17. Here, HLB indicates the molecular weight of the hydrophilic group portion in the total molecular weight of the surfactant, and the polyoxyethylene-based nonionic surfactant is obtained by the Griffin equation.

  Specifically, polyethylene glycol fatty acid esters such as polyethylene glycol (12) monolaurate, polyethylene glycol alkyl ethers such as polyethylene glycol (20) octyldodecyl ether, and polyethylene glycol alkyl phenyl ethers such as polyethylene glycol (20) nonylphenyl ether. Polyethylene glycol castor oil derivatives such as polyethylene glycol (50) castor oil, polyethylene glycol hydrogenated castor oil derivatives such as polyethylene glycol (60) hydrogenated castor oil monoisolaurate, polyethylene such as polyethylene glycol (20) sorbitan monostearate Glycol surfactant, polyglycerol fatty acid ester such as diglycerol monooleate, polyoxy Polyoxyethylene glycerin fatty acid esters such as ethylene (8) glyceryl monoisostearate, polyglycerin alkyl ethers such as diglycerin 2-ethylhexyl ether, sucrose fatty acid esters such as sucrose stearate, alkyl glucoside, etc. It is done. Further, among them, those having a hydrophobic group having 8 or more carbon atoms, particularly 12 or more are preferable because of good rinsing properties.

  A component (f) can also use 1 type, or 2 or more types, 1-45 mass% in the whole composition, Preferably it is 1-40 mass%, Furthermore, 9-24 mass% is contained. By setting the content to 1% by mass or more, the rinsing property is improved, and by setting the content to 45% by mass or less, the cleaning action can be improved.

  The lipophilic amphiphilic substance of component (g) has a nonionic surfactant having an HLB of 8 or less, a fatty alcohol having 8 to 25 carbon atoms, a fatty acid having 8 to 25 carbon atoms, and an alkyl group having 8 to 25 carbon atoms. Monoalkyl phosphoric acid is preferred. In these, it is preferable that the number of carbon atoms of the hydrophobic group is 8 or more, particularly 12 or more because cleaning performance is good.

  Examples of nonionic surfactants having an HLB of 8 or less include ethylene glycol fatty acid esters such as ethylene glycol monostearate, polyethylene glycol fatty acid esters such as polyethylene glycol (2) monostearate, polyethylene glycol (5) decylpentadecyl ether. Polyethylene glycol alkyl ethers such as polyethylene glycol (5) polyethylene glycol surfactants such as polyethylene glycol hardened castor oil derivatives such as hydrogenated castor oil monoisolaurate; propylene glycol fatty acid ester, polypropylene glycol fatty acid ester, propylene glycol alkyl ether , Polypropylene glycol alkyl ether, propylene glycol alkyl ether oxidation ethylene Propylene glycol surfactants such as derivatives; Glycerin fatty acid esters such as glycerol monoisostearate; Glycerin alkyl ethers such as glycerol monoisostearyl ether; Sorbitan fatty acid esters such as sorbitan monostearate; Fatty acid alkanolamides, Diethanolamine laurate And fatty acid dialkanolamides such as Among these, those having an HLB of 6 or less are preferable because the cleaning performance against oily soil and water-soluble soil is good.

  The fatty alcohol has a linear or branched saturated or unsaturated hydrocarbon group having 8 to 25 carbon atoms, preferably 12 to 22 carbon atoms, and may be either a monovalent or polyhydric alcohol, such as octanol. Lauryl alcohol, myristyl alcohol, isomyristyl alcohol, palmityl alcohol, isopalmityl alcohol, stearyl alcohol, isostearyl alcohol, behenyl alcohol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol and the like. Of these, lauryl alcohol, myristyl alcohol, isomyristyl alcohol, isopalmityl alcohol, isostearyl alcohol, oleyl alcohol, especially lauryl alcohol, myristyl alcohol, and isostearyl alcohol have good cleaning performance against oily and water-soluble stains. Therefore, it is preferable.

  The fatty acid may be a linear or branched saturated or unsaturated group having 8 to 25 carbon atoms, preferably 12 to 22 carbon atoms. For example, lauric acid, myristic acid, isomyristic acid, palmitic acid, isopalmitic acid , Stearic acid, behenic acid, isostearic acid, oleic acid, linoleic acid, linolenic acid and the like. Of these, lauric acid, myristic acid, isomyristic acid, isopalmitic acid, isostearic acid, oleic acid, linoleic acid, linolenic acid, especially lauric acid, myristic acid, and isostearic acid are used to clean oily and water-soluble soils It is preferable because the performance is good.

  The monoalkyl phosphoric acid has a linear or branched alkyl group having 8 to 25 carbon atoms, preferably 12 to 22 carbon atoms. For example, monolauryl phosphoric acid, monomyristyl phosphoric acid, monopalmityl phosphoric acid , Monostearyl phosphoric acid, monobehenyl phosphoric acid, monoisostearyl phosphoric acid, mono 2-hexyldecyl phosphoric acid and the like. Among these, monolauryl phosphoric acid, monomyristyl phosphoric acid, mono 2-hexyldecyl phosphoric acid, particularly monolauryl phosphoric acid and monomyristyl phosphoric acid are preferable because of their good cleaning performance.

  Two or more kinds of components (g) can be used, and are contained in an amount of 1 to 45% by mass, preferably 1 to 40% by mass in the total composition. By setting it as 1 mass% or more, the washing | cleaning effect | action and a rinsing property become favorable, and a washing effect | action and a rinsing property become favorable by setting it as 45 mass% or less.

  Further, the hydrophilic nonionic surfactant of component (f) and the lipophilic amphiphile of component (g) used in the present invention have a weight ratio (f) / (g) of 0.5. It is preferable that it is ˜8 because rinsing properties and cleaning performance are good.

As a water-soluble solvent of the component (h) used by this invention, a C1-C6 monohydric or polyhydric alcohol, polyethyleneglycols, polypropylene glycols, saccharides, and a water-soluble fatty acid are preferable.
Component (h) is preferably one that can increase the hydrophilicity of the hydrophilic nonionic surfactant of component (f) and the lipophilic amphiphile of component (g). Component (f) hydrophilic nonionic surfactant and component (g) a property capable of increasing the hydrophilicity of the lipophilic amphiphile are nonionic by adding component (h). This means the property of raising the cloud point (cloud point) of a surfactant, and so on. Kajitani et al., Oil Chemistry, Vol. 33, No. 3, p. 156-161 (1984) and the like.

  Examples of the monohydric alcohol having 1 to 6 carbon atoms include ethanol, propanol, isopropanol, butanol, isobutanol, and the like. Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, isoprene glycol, 1,3-butylene glycol, Hexylene glycol, trimethylolpropane, glycerin, sorbit and the like can be mentioned. Of these, monohydric alcohols are ethanol, propanol, isopropanol, especially ethanol; polyhydric alcohols are propylene glycol, isoprene glycol, 1,3-butylene glycol, hexylene glycol, especially isoprene glycol, Xylene glycol is preferred because of good cleaning performance against oily and water-soluble soils.

  As the polyethylene glycols or polypropylene glycols, polyethylene glycols having a molecular weight of 1000 or less and polypropylene glycols having a molecular weight of 200 or less can be used, and examples thereof include diethylene glycol, dipropylene glycol, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether. . Of these, dipropylene glycol, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, particularly dipropylene glycol and diethylene glycol monoethyl ether are preferable because of their good cleaning performance against oily and water-soluble soils.

  Examples of the saccharide include erythritol, pentaerythritol, methyl glucoside, ethyl glucoside, polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside and the like, and alkyl glucosides having 2 or less carbon atoms in the alkyl chain are particularly preferable. Among these, methyl glucoside, ethyl glucoside, polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside, especially polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside have good cleaning performance against oily soil and water-soluble soil. Therefore, it is preferable.

  Examples of water-soluble fatty acids include those having 1 to 6 carbon atoms, such as acetic acid, propionic acid, and butanoic acid. Particularly, acetic acid, propionic acid, and propionic acid have good cleaning performance against oily and water-soluble soils. Therefore, it is preferable.

  Two or more types of component (h) can also be used, and 3-80 mass% in the whole composition, Preferably it is 5-70 mass%, Furthermore, 10-50 mass% is contained. When the content is 3% by mass or more, the cleaning action for oily soil is good, and when the content is 80% by weight or less, the cleaning performance for oily soil is good.

  Also, the weight ratio (h) / ((f) + (g) of the total amount of the component (h) and the hydrophilic nonionic surfactant of the component (f) and the lipophilic amphiphilic substance of the component (g). It is preferable that the value of)) is 1 or more because the cleaning performance is good.

  The component (i) water constitutes the balance and is contained in the total composition in an amount of 3 to 80% by mass, preferably 5 to 75% by mass, and more preferably 10 to 65% by mass. By setting it to 3% by mass or more, the cleaning action against water-soluble dirt becomes good, and when it is made 80% by mass or less, the cleaning action against oily dirt becomes good.

  In addition, the agent which is the above-mentioned isotropic 1 liquid phase is not limited to what was mentioned above.

After the step (A), the step (C) may be performed after washing the skin with water, but the step (C) is performed immediately after the agent (A) is attached to the skin. It is preferable to do this. Thereafter, the step (B) may be carried out after washing the skin with water, but it is preferable to carry out the step (B) immediately after the agent (C) is adhered to the skin. . By doing in this way, the dirt of a pore can be removed reliably.

In the second embodiment,
First, the process (A): The cleaning agent in which the continuous phase is the aqueous phase is made to conform to the skin.
A detergent whose continuous phase is an aqueous phase swells dirt around the pores and metabolites from the skin, and removes dirt on the surface layer.
Next, step (C): a washing agent that is an isotropic one-liquid phase in which the oil phase and the aqueous phase are each a continuous phase is applied to the skin.
It has high wettability, is well-familiar with the skin, and penetrates into fine parts. As a result, the cleaning agent can penetrate from the point where the dirt on the surface layer has been removed to act deeper in the pores.
Next, the step (B): the cleaning agent whose continuous phase is the oil phase is made to conform to the skin.
In this cleaning agent, more solid sebum inside the pores is dissolved by the component (d). It is excellent in the effect of dissolving hard solid stains formed on pores, especially horn plugs, has little irritation to the skin, and further increases the effect of removing keratin plugs.

After the step (B), (D) a step of adding water and removing the agent from the skin is performed. As a result, the cleaning agent is removed from the skin together with the square plug. The agent used in the step (A), the agent used in the step (C), and the agent used in the step (B) are removed from the skin and do not penetrate into the skin.
In this embodiment, the agent (cleaning liquid) is familiarized with the skin in each step, and it is convenient because the agent does not need to be dried as compared with a method using a conventional sheet or pack.

  In addition, it is preferable to perform the space | interval (for example, the space | interval after performing a process (A) after performing a process (C)) between each process before the skin dries from the act performed by the previous process. . More specifically, it is preferably performed within 1 hour, further within 30 minutes, more preferably within 10 minutes after performing the previous step, and the next step is performed immediately after performing the previous step. It is preferable.

(Third embodiment)
The skin cleaning method of the present embodiment is:
(A) Nonionic surfactant (component (j)), oil agent (component (k)), compound having 1 to 2 hydroxyl groups and having 2 to 6 carbon atoms (component (l)), specific water-soluble The O / W emulsion cleanser comprising a polymer (component (m)) and water (component (n)), the continuous phase of which is an aqueous phase, is applied to the skin.
(C) Thereafter, water is evaporated from the cleaning agent, the continuous phase is changed to an isotropic one liquid phase, and the washing is made of an isotropic one liquid phase in which the oil phase and the aqueous phase are each a continuous phase. Apply the agent to the skin,
(B) Furthermore, the moisture is evaporated from the cleaning agent composed of one isotropic liquid phase, the continuous phase is changed into the oil phase, and the cleaning agent composed of the oil phase is blended into the skin. This is a cleaning method for cleaning dirt.

Hereinafter, this embodiment will be described.
In this embodiment,
The component (j) is a nonionic surfactant, and is composed of one kind of nonionic surfactant or a mixed surfactant composed of two or more kinds of nonionic surfactants. The HLB of the agent or the mixed surfactant is 10 or more and 15 or less.
By setting the HLB of one kind of nonionic surfactant or mixed surfactant of component (j) to 10 or more and 15 or less, the cleaning composition can be made into an O / W emulsion.

  Here, HLB (hydrophilic-lipophilic balance <Hydrophilic-Lypophilic Balance>) is calculated by the method described in the first embodiment.

The nonionic surfactant of component (j) used in the present invention is not particularly limited as long as it satisfies the above conditions, and for example, a fatty acid ester having 8 to 22 carbon atoms or a higher grade having 8 to 22 carbon atoms. It consists of an ether of alcohol and has a hydroxyl group or an ethylene oxide group as a hydrophilic functional group.
Specifically, polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, propylene glycol fatty acid ester, polyoxyethylene polyoxypropylene glycol, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit Fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, polyalkyl glyceryl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ether fatty acid ester, sucrose fatty acid ester, alkyl Polyglucoside, (poly) alkyl glyceryl ether, etc. are mentioned.

Among them, from the viewpoint of detergency, polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbit fatty acid ester, (poly) alkyl glyceryl ether, polyoxyethylene alkyl ether, sucrose fatty acid ester, Alkyl polyglucosides are excellent.
In particular, diglycerin fatty acid ester, polyethylene glycol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbit fatty acid ester, (poly) alkyl glyceryl ether, and alkyl polyglucoside are preferable in terms of detergency against oily soil.

  Among them, diisoline monoisostearate (HLB8) contributes to the construction of an isotropic one-liquid phase made of components (j) to (n), and has high detergency against keratoplug stains and a fresh feeling of use. , Polyoxyethylene (8) glyceryl monoisostearate (HLB9), tetraoleic acid polyoxyethylene sorbitol (HLB11), polyoxyethylene (7) coconut oil fatty acid glycerin (HLB13), monolauric acid (12) polyethylene glycol (HLB14) ), C8-C16 alkyl glucoside (HLB17), 2-ethylhexyl glyceryl ether (HLB7), monooleic acid diglycerin, and isostearyl glyceryl ether are preferred, and one or more can be used in combination. .

These components (j) are preferably used in combination of two or more nonionic surfactants having a high HLB and nonionic surfactants having a low HLB for the purpose of further improving the stability.
In other words, it is preferable that the difference between the highest HLB and the lowest HLB of the two or more kinds of nonionic surfactants mixed is 5 or more, particularly 7 or more, thereby improving the stability of the cleaning composition. Excellent to increase.

Content of a component (j) is 5 to 50 mass% in the whole composition. By doing in this way, the specific phase state mentioned later can be taken.
Moreover, content of a component (j) is 5 mass% or more, Furthermore, 10 mass% or more, Preferably, it is 16 mass% or more. By doing in this way, the familiarity with skin is good and pore dirt including a square plug can be lifted. Moreover, content of a component (j) is 50 mass% or less in the whole composition. Especially, it is preferable that content of a component (j) is 40 mass% or less, especially 33 mass% or less. By doing in this way, it can be washed away with no residual feeling.

(Ingredient (k))
The component (k) oil used in the present invention is liquid at room temperature and has a viscosity at 30 ° C. of 15 mPa · s or less. Here, the viscosity is measured with a BM viscometer (manufactured by Tokimec, measurement conditions: rotor No. 1, 60 rpm, 30 ° C.).
Such low-viscosity oils have high familiarity around the plugs clogged in pores and high solubility of dirt, so they are resistant to hard solid stains formed on the pores, especially dirt such as square plugs. Excellent detergency. Furthermore, it is not accompanied by a strong oily feeling and the feeling of use is also good.
From the viewpoint of reducing the oiliness and providing an appropriate usability, it is preferable that the viscosity of the component (k) at 30 ° C. is as low as 10 mPa · s or less.

  As such an oil agent, among the liquid oils usually used in cosmetics, those satisfying the above conditions can be used. For example, hydrocarbon oils such as liquid paraffin, liquid isoparaffin, hydrogenated polyisobutene, squalane, isododecane; isostearic acid cholesteryl ester, isopropyl palmitate, isopropyl myristate, neopentyl glycol dicaprate, isopropyl isostearate, octadecyl myristate, 2- Ester oil such as cetyl ethylhexanoate, isononyl isononanoate, isotridecyl isononanoate, tri (2-ethylhexanoic acid) glycerin, tri (caprylic acid / capric acid) glycerin; alkyl-1,3-dimethylbutyl ether, nonylphenyl ether, etc. Ether oil: methylcyclopolysiloxane such as decamethylcyclopentasiloxane and octamethylcyclotetrasiloxane, methylpolysiloxane, Silicone oils such as Le phenyl polysiloxane; animal and vegetable oils such as olive oil; and the like can be used terpene oil.

  Of these, oil agents having a molecular weight of 300 or less are preferable because of their high detergency. Specific examples include hydrocarbon oils such as light liquid isoparaffin and hydrogenated polyisobutene, ester oils such as isopropyl myristate, isopropyl palmitate and isononanoyl isononanoate, and silicone oils such as octamethyltrisiloxane and octamethylcyclotetrasiloxane. It is done. In particular, branched hydrocarbon oils having 8 to 18 carbon atoms are preferred, and isododecane is preferred.

  Moreover, the oil agent of a component (k) may be formed with mixtures, such as hydrocarbon oil, ester oil, and silicone oil. In this case, isoparaffin is preferably contained in the component (k) in an amount of 30% by mass or more, preferably 42% by mass or more. From the viewpoint of odor, it is preferable not to contain hydrocarbons having 8 to 9 carbon atoms.

  As hydrocarbon oils, Marcazole R (Maruzen Petrochemical Co., Ltd.), IP Solvent 1620, 2028 (Idemitsu Petrochemical Co., Ltd.), Isopar L, Isopar H (Exxon Chemical Co., Ltd.), Isosol 300, 400 (trade name) are used. As mentioned above, Marcazole R is particularly preferably used because it contains isododecane with high purity.

  The oil agent of component (k) is contained in the total composition in an amount of 8% by mass or more, further 10% by mass or more, 39% by mass or less, and further 30% by mass or less. Especially, it is preferable to contain 15 to 24 mass%. By doing in this way, it is possible to cleanly wash away with no residual feeling while having sufficient detergency.

The compound of component (l) used in the present invention is a compound having 2 or more and 6 or less carbon atoms and having 1 or 2 hydroxyl groups. This contributes to the construction of an O / W emulsion made of components (j) to (n) and an isotropic one-liquid phase. From the viewpoint of high detergency, specifically, monohydric alcohols having 2 to 6 carbon atoms such as ethanol, propanol, isopropanol, butanol, isobutanol; ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, Examples thereof include glycols having 2 to 6 carbon atoms such as 1,3-butylene glycol, 1,4-butylene glycol, hexylene glycol and isoprene glycol, and ethylene glycol alkyl ethers such as diethylene glycol monoethyl ether.
Among these, glycols such as 1,3-butylene glycol, isoprene glycol, propylene glycol, and dipropylene glycol are excellent in the construction of an isotropic one-liquid phase having a wide stable region.

  As the component (l), one or more compounds can be used, and it is preferable to contain 10% by mass or more in the total composition from the viewpoint of realizing sufficient detergency. Moreover, it is preferable from a viewpoint of usability to contain in the whole composition 50 mass% or less, 40 mass% or less, especially 30 mass% or less, and also 20 mass% or less. Furthermore, the specific phase state mentioned later can be taken by making content of a component (l) into 10 mass% or more and 50 mass% or less.

Component (m) used in the present invention is a combination of one or more components selected from water-soluble polymers containing structural units derived from (meth) acrylic acid, or acryloylmethyl taurate / vinylpyrrolidone copolymers. Can be used.
The water-soluble polymer containing a structural unit derived from (meth) acrylic acid is, for example, an acrylic acid / alkyl methacrylate copolymer, which is a cross-linked copolymer of acrylic acid and an alkyl (C10-30) methacrylate ester. Examples of commercially available products include PEMULEN TR-1, PEMULEN TR-2, Carbopol ETD2020 (manufactured by Lubrizol Advanced Materials), and the like.
It is preferable that the water-soluble polymer containing the structural unit derived from (meth) acrylic acid as the component (m) neutralizes all or part of the (meth) acrylic acid unit using an alkali agent. The alkali agent to be neutralized is not particularly limited as long as it is an alkali agent that can be usually added to cosmetics. For example, potassium hydroxide, sodium hydroxide, and the like can be used. Alkaline agents can be used alone or in combination of two or more, and 0.01% by mass or more and 5% by mass or less are blended in the total composition, and the pH of the system is 5.5 to 9, particularly 6 to 6. It is preferable to adjust to 8.

  The acryloylmethyl taurate / vinylpyrrolidone copolymer of component (m) is, for example, an acryloyldimethyltaurine ammonium / VP copolymer, such as Aristoflex AVC (manufactured by Clariant), and the like. It is preferable to blend 0.01 mass% or more and 5 mass% or less and adjust the pH of the system to 4 to 8.5, particularly 5 to 7.

The water-soluble polymer or the acryloylmethyl taurate / vinyl pyrrolidone copolymer containing the component (m) (meth) acrylic acid as a constituent unit of the monomer can be used alone or in combination of two or more.
The component (m) is particularly preferably an alkyl methacrylate methacrylate copolymer from the viewpoint of producing an O / W emulsion composition.

Component (m) is an isotropic one-liquid phase made of components (j), (k), (l), and (n), and an O / W type emulsion in which the continuous phase is an aqueous phase when component (m) is added. Form a region. When the dosage form of the cleaning agent is an O / W type emulsion, it is possible to swell dirt around the pores and metabolites from the skin, thereby facilitating removal of the dirt on the surface layer and enhancing the effect of removing plugs. Is.
It is preferable that content of a component (m) is 0.01 to 5 mass% in the whole composition. Among these, by setting the content to 0.2% by mass or more, 4% by mass or less, and further 3% by mass or less, the effect of removing plugs is high, and a stable O / W emulsion and isotropic one-liquid phase are constructed. It is excellent in that it contributes to

  The water of component (n) used in the present invention is contained in the total composition in an amount of 10% by mass to 52% by mass. In particular, it is preferably contained in an amount of 20% by mass or more and 50% by mass or less, and further 40% by mass or less. By doing in this way, it contributes to the construction of an O / W type emulsion and an isotropic one liquid phase, and can be washed away without feeling oily.

(Phases comprising components (j) to (n))
The cleaning composition in the present invention is an O / W emulsion. This will be described with reference to a phase diagram of a four-component system of components (j), (k), (l), and (n) (see FIG. 1). In this phase diagram, as the water content decreases, three regions of an O / W type emulsion area, an adjacent isotropic one liquid phase area, and an oil phase area appear. Washing with these three phases is excellent in the effect of dissolving hard solid stains formed in pores, particularly horn plugs, and the effect of removing horn plugs is enhanced.

  In the present invention, the initial state where the cleaning composition is applied to the skin is an O / W type emulsion, and the O / W type state in which the continuous phase is an aqueous phase is adapted to the skin, so that It swells dirt and metabolites from the skin, and dirt on the surface layer can be easily removed. Then, further massage is performed as necessary. During this time, water evaporates from the cleaning composition, and the continuous phase changes to an isotropic one-liquid phase composed of an aqueous phase and an oil phase. Furthermore, if the massage is continued, the water will further evaporate and change from the isotropic one liquid phase to the oil phase, and the continuous phase will adapt the state of the oil phase to the skin.

  After that, when the user rinses the skin with water, the cleaning composition is phase-changed in the order of oil phase, isotropic 1 liquid phase, O / W emulsion, and is easily removed from the skin and absorbed into the skin. Will never be done.

  Thus, the three-component phase diagram of components (j), (k), (l), and (n) has three regions: O / W emulsion, isotropic one-liquid phase, and oil phase. To appear, the weight ratio of the component (j) to the component (k) is (j) / (k) = 3/7 to 3/1, so that the initial O / W type emulsion area and water evaporation A later isotropic 1 liquid phase area appears. Especially, by setting (j) / (k) = 1/1 to 7/3, it is possible to cleanly wash away with no residual feeling while having sufficient detergency of the square plug. By setting (j) / (k) to 3/1 or less, an O / W type emulsion can be formed. By setting (j) / (k) to 3/7 or more, O / W type An emulsion can be easily formed, and at the same time, the phase can be changed to an oil phase through an isotropic liquid phase.

  Further, the cleaning composition has an O / W emulsion having a wide stable region by setting the weight ratio of the component (l) to the component (n) to (l) / (n) = 1/5 to 5/1. An area and an isotropic one-liquid phase area after water evaporation are obtained. In particular, 1/4 to 2/1, more preferably 1/2 to 2/1, can realize a sufficient detergency of the square plug. By setting (l) / (n) to 5/1 or less, an O / W type emulsion can be easily formed, and by setting (l) / (n) to 1/5 or more, an O / W type emulsion It is possible to easily change the phase from an isotropic one-liquid phase to an oil phase.

  By the above operation, the cleaning composition of the present embodiment is excellent in the effect of removing hard solid stains formed on pores, in particular, square plugs. Moreover, since the cleaning composition of this embodiment apply | coats and uses for skin and it only needs to wash | clean skin with water after use, it can be used simply. In addition, since the skin is washed with an agent, there is little irritation. Furthermore, since the cleaning composition of this embodiment is an O / W emulsion and the continuous phase is an aqueous phase, the skin feel after washing is good.

Next, the effect of the cleaning composition of 3rd embodiment of this invention is demonstrated with reference to FIG.
FIG. 1 is a ternary phase diagram of the cleaning composition of the present invention, showing the state of phase change. FIG. 1 is a view when 1,3-butylene glycol is used as the component (l) and the weight ratio of water to the component (l) is 3: 1. The component (m) was an acrylic acid / alkyl methacrylate (C10-30) copolymer (PEMULEN TR-1 manufactured by Lubrizol Advanced Materials), which was 0.9% by mass. Furthermore, component (j) is monoisostearate diglycerin (HLB8) (Nisshin Oilio Group Cosmall 41V), tetraoleic acid polyoxyethylene sorbitol (HLB11) (Kao Rheidol 430), monolauric acid (12) polyethylene glycol (HLB14) (Emanon 1112HG manufactured by Kao Corporation), alkyl (C8-16) glucoside (HLB17) (40% by weight aqueous solution) (Mydol 10 manufactured by Kao Corporation), and a weight ratio of 10: 6: 22: 15 This is the case.
This composition is an O / W emulsion, and it is transformed into an isotropic 1 liquid phase (bicontinuous phase) by massaging the skin by applying it to the skin. And an oil phase is formed. More solid sebum inside the pores is dissolved by the component (k), and the plugs clogged in the pores can be removed. The composition shown in FIG. 1 is highly effective in removing horn plugs.

The phase diagram shown in FIG. 1 uses 1,3-butylene glycol as the component (l). For example, instead of 1,3-butylene glycol, as shown in FIG. Even when other components (l) are used, the same phase diagram can be drawn, and the same effects are obtained.
FIG. 2 (a) is a phase state diagram when diethylene glycol is used as the component (l), and FIG. 2 (b) is a phase state diagram when dipropylene glycol is used as the component (l). The weight ratio of water to component (l) was 3: 1, and component (m) was 0.9% by mass.

Further, FIGS. 3A to 3C show phase phase diagrams in which the weight ratio of water and the component (l) is changed. From these, it can be seen that the same phase diagram can be drawn, and there are similar effects.
FIG. 3 (a) uses 1,3-butylene glycol as component (l), the weight ratio of water to component (l) is 3: 1, and component (m) is 0.5 It is a phase state figure at the time of setting it as the mass%.
FIG. 3B uses dipropylene glycol and 1,3-butylene glycol as the component (l), and the weight ratio of water to the component (l) is 1: 1. m) is a phase diagram in the case of 0.5 mass%.
The part surrounded by the dotted circle in FIG. 3B shows the phase change of the composition of Example 21 described later.
FIG. 3 (c) uses dipropylene glycol and 1,3-butylene glycol as the component (l), the weight ratio of water to the component (l) is 2: 3, and the component (m) These are phase-phase diagrams at 0.5 mass%.
A portion surrounded by a dotted circle in FIG. 3C shows a phase change of the composition of Example 22 described later.

  The head part exposed on the skin surface of the horn plug is intricately intertwined with dirt around the pores and metabolites from the skin. This portion of dirt is harder to remove than other skin surface stains and hinders removal of the square plug. Further, the body portion of the horn plug present inside the pores is hard and solid due to sebum inside the pores and metabolites from the skin, and the agent is difficult to remove because it is difficult to enter the pores. The cleaning agent composition used in the present embodiment changes the phase of the O / W phase, the isotropic one liquid phase (bicontinuous phase), and the oil phase in the order of cleaning, so Since it can be washed sequentially in a phase suitable for removing dirt on the body and torso, hard solid pore dirt, especially corner plugs, that could only be removed with the conventional type of sticking sheets to the skin, is easily removed with a face wash. it can. Furthermore, when the skin is rinsed with water, the cleaning composition changes in the order of an oil phase, an isotropic one-liquid phase (bicontinuous phase), and an O / W phase. Since it is removed from the skin, the skin feel after washing is good.

(Other ingredients)
The cleaning composition used in the present invention further includes components usually used in cleaning agents, thickeners, bactericides, moisturizers, high viscosity oils, wetting agents, coloring agents, preservatives, and feel improvers. , Fragrances, antioxidants, various extracts and the like can be appropriately contained.

  The cleaning composition used in the present embodiment is preferably free from a large amount of ionic surfactant from the viewpoint of building a stable isotropic one-liquid phase, and is preferably less than 1.0%. . Further, it is preferably 0.1% or less, and particularly preferably not contained.

  The detergent composition used in the present invention can be used as a facial cleanser, makeup remover, body cleansing agent, massage agent, and keratin plug remover, and is particularly preferably used as a facial cleanser and keratin plug remover. It is preferably used as a plug remover.

  The skin cleaning method of the present invention can be used for skin having pores with clogged plugs as use sites. As an example, it can be used for the pore part which is worrisome such as the whole body, the whole face, the circumference (T zone) from the forehead to the nose. The removal of the horn plugs can be expected to improve pore conspicuousness, roughness, improve stickiness, and prevent acne.

  In addition, the cleaning composition used in the third embodiment includes a compound having 2 to 6 carbon atoms and a hydroxyl group of 1 or 2 (component (l)) and a specific water-soluble polymer (component ( m)) and water (component (n)) are uniformly mixed and neutralized by adding an alkali agent such as sodium hydroxide or potassium hydroxide, and then a nonionic surfactant (component (j)). It is obtained by adding an oil agent (component (k)). In the case of containing a raw material that is solid at normal temperature, it can be produced by uniformly mixing all components after heating and melting or dissolving in other components.

  Next, examples of the present invention will be described.

(Evaluation methods)
Square plug removal effect:
The test which wash | cleans a nose according to the Example and comparative example which are mentioned later using 5 healthy panels was done, and the number of horn plugs which existed in the nose before and after washing | cleaning was each measured.
Next, the angular plug removal rate was determined and evaluated by (Equation 1).
Corner plug removal rate = 100− (number of horn plugs present in 1 cm ² on the nose after use) / (number of horn plugs present in 1 cm ² on the nose before use) × 100 (Formula 1)
A: The angle plug removal rate is 40% or more B: The angle plug removal rate is 30% or more and less than 40% C: The angle plug removal rate is 10% or more and less than 30% D: The angle plug removal rate is less than 10%

The cleaning agents shown in Tables 1 to 3 were respectively prepared (cleaning agents (A) -1 to (A) -5, (B) -1 to (B) -3, (C) -1 to (C) -6. ). Cleaning agents (A) -1 to (A) -5 are agents whose continuous phase is an aqueous phase, and cleaning agents B-1 to B-3 are agents whose continuous phase is an oil phase. Cleaning agents (C) -1 to (C) -6 are agents in which the continuous phase is composed of an isotropic one liquid phase (bicontinuous phase). The state of these phases was confirmed by observation of the appearance, observation with an optical polarization microscope, creation of a phase diagram, measurement of the self-diffusion coefficient by NMR, and the like.
In addition, when there existed a solid component at room temperature, or when producing | generating a gel-like component by mixing at room temperature, in order to dissolve, it heated at 70-75 degreeC, stirring. After fully dissolving, it returned to room temperature and obtained the cleaning agent.

Example 1
First, 1 g of the cleaning agent (A) -1 was applied only to the nose portion and allowed to familiarize well for 15 seconds. “Adhere” refers to the act of spreading or rubbing the agent with your fingers. However, the agent is not absorbed by the skin. The same applies hereinafter. With the agent (A) -1 adhering to the skin, next, apply 1 g of the cleaning agent (B) -1 only to the nose part, let it blend well for 15 seconds, and then rinse with water for 1 minute (Table 4).

(Example 2)
First, 1 g of the cleaning agent (A) -2 was applied only to the nose portion and allowed to familiarize well for 15 seconds. With the agent A-2 attached to the skin, next, apply 1 g of the cleaning agent (B) -2 only to the nose portion, let it blend well for 15 seconds, and then rinse with water for 1 minute (see Table 4). ).

(Example 3)
First, 1 g of the cleaning agent (A) -3 was applied only to the nose portion and allowed to familiarize for 15 seconds. With the agent (A) -3 adhering to the skin, next, apply 1 g of the cleaning agent (B) -3 only to the nose part, let it blend well for 15 seconds, and then rinse with water for 1 minute (Table 4).
Example 4
First, the cleaning agent (A) -1, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent (A) -1 adhering to the skin, apply the cleaning agent (C) -1, 1 g only to the nose, and let it blend well for 10 seconds (A) -1, agent (C) -1 In the state where it adheres to the skin, 1 g of the cleaning agent (B) -1 was further applied only to the nose portion, and was thoroughly blended for 10 seconds, and then rinsed with water for 1 minute (see Table 4).

(Example 5)
First, the cleaning agent (A) -1, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent of (A) -1 attached to the skin, apply the cleaning agent (C) -1, 1 g only to the nose part, and let it blend well for 10 seconds. (A) -1, (C) -1 With the agent attached to the skin, the cleaning agent (B) -2, 1 g was further applied only to the nose portion, allowed to familiarize for 10 seconds, and then rinsed with water for 1 minute (see Table 4).

(Example 6)
First, the cleaning agent (A) -2, 1 g was applied only to the nose portion, and was thoroughly blended for 10 seconds. With the agent (A) -2 attached to the skin, 1 g of the cleaning agent (C) -2 was applied only to the nose portion and allowed to familiarize for 10 seconds. Then, with the agent of (A) -2, (C) -2 attached to the skin, apply the cleaning agent (B) -2, 1 g only to the nose part and let it blend well for 10 seconds. Rinse with water for 1 minute (see Table 4).

(Example 7)
First, the cleaning agent (A) -3, 1 g was applied only to the nose portion, and was thoroughly blended for 10 seconds. With the agent (A) -3 adhered to the skin, the detergent (C) -3, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent (A) -3, (C) -3 attached to the skin, apply the cleaning agent (B) -3, 1 g only to the nose part and let it blend well for 10 seconds, then with water Rinse for 1 minute (see Table 4).

(Example 8)
First, the cleaning agent (A) -4, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent (A) -4 adhered to the skin, next, the cleaning agent (C) -3, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agents (A) -4 and (C) -3 adhering to the skin, apply the detergent (B) -3, 1 g only to the nose part and let it blend well for 10 seconds, then with water for 1 minute Rinse (see Table 4).

Example 9
First, the cleaning agent (A) -4, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent (A) -4 adhered to the skin, Next, the cleaning agent (C) -4, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agents (A) -4 and (C) -4 attached to the skin, apply the cleaning agent (B) -2, 1 g only to the nose part and let it blend well for 10 seconds, then with water for 1 minute Rinse.

(Example 10)
First, the cleaning agent (A) -4, 1 g was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agent (A) -4 adhered to the skin, Next, 1 g of the cleaning agent (C) -5 was applied only to the nose portion and allowed to familiarize for 10 seconds. With the agents (A) -4 and (C) -5 attached to the skin, apply the detergent (B) -2, 1 g only to the nose and apply well for 10 seconds, then with water for 1 minute. Rinse.

(Example 11)
First, 1 g of the cleaning agent (A) -5 was applied only to the nose portion, and was thoroughly blended for 10 seconds. Next, with the agent (A) -5 attached to the skin, 1 g of the cleaning agent (C) -6 was applied only to the nose and allowed to familiarize for 10 seconds. With the agents (A) -5 and (C) -6 attached to the skin, apply the cleaning agent (B) -3, 1 g only to the nose and apply well for 10 seconds, then with water for 1 minute. Rinse.

(Examples 12 to 31, 32)
The cleaning agents shown in Tables 5 and 6 (corresponding to Example 32) were prepared.
Moisturizers (sorbitol, glycerin) are added to components (l), (m), and (n) as necessary. Further, polypropylene glycol and hydrogenated polyisobutene are added as necessary, and all components are uniformly mixed by stirring. . The mixture was neutralized by adding potassium hydroxide. Next, a detergent composition was obtained by uniformly dispersing the components (j), (k) and the fragrance.
This cleaning agent is an O / W type emulsion. The phase state was confirmed by observing the appearance, observing with an optical polarization microscope, creating a phase diagram, measuring the self-diffusion coefficient by NMR, and the like. In addition, the value of the viscosity described in Tables 2, 3, 5, and 6 is measured with a BM viscometer (manufactured by Tokimec, measurement conditions: rotor No. 1, 60 rpm, 30 ° C.). .
1 g of the prepared cleaning agent was applied only to the nose, massaged for 30 seconds, and then rinsed with water for 1 minute.
FIG. 3B shows the phase change of the agent prepared in Example 21, and FIG. 3C shows the phase change of the agent prepared in Example 22.
According to FIGS. 3B and 3C, when an O / W type agent whose continuous phase is an aqueous phase is applied to the skin, moisture is evaporated from this agent, and an isotropic one-liquid phase (bi-phase) is obtained. It turns out that it becomes the said agent which consists of a continuous phase. Further, it can be seen that when the moisture evaporates from the agent composed of an isotropic one-liquid phase, the continuous phase changes into the oil phase, and the continuous phase becomes the agent composed of the oil phase. In other agents of Examples 12 to 32, when an O / W type agent whose continuous phase is an aqueous phase is applied to the skin, moisture is evaporated from this agent, and an isotropic one-liquid phase (bicontinuous) When the moisture evaporates from the agent consisting of an isotropic liquid phase, the continuous phase changes to the oil phase and the continuous phase becomes the agent consisting of the oil phase.

(Comparative Example 1)
Detergent (A) -3, 1 g was applied only to the nose portion, allowed to familiarize for 30 seconds, and then rinsed with water for 1 minute (see Table 7).

(Comparative Example 2)
Detergent (A) -4, 1 g was applied only to the nose portion, allowed to familiarize for 30 seconds, and then rinsed with water for 1 minute (see Table 7).

(Comparative Example 3)
Detergent (C) -2, 1 g was applied to the nose only, allowed to familiarize for 30 seconds, and then rinsed with water for 1 minute (see Table 7).

(Comparative Example 4)
Detergent (C) -3, 1 g was applied to the nose only, allowed to familiarize for 30 seconds, and then rinsed with water for 1 minute (see Table 7).

(Comparative Example 5)
Detergent B-2, 1 g, was applied only to the nose and allowed to familiarize for 30 seconds, then rinsed with water for 1 minute (see Table 7).

(Comparative Example 6)
Detergent (B) -3, 1 g was applied to the nose only, allowed to familiarize for 30 seconds, and then rinsed with water for 1 minute (see Table 7).

(Comparative Example 7)
Apply the cleaning agent (B) -1, 1g only to the nose part and let it blend well for 15 seconds. With the agent (B) -1 attached to the skin, next, the cleaning agent (A) -1, 1g Was applied to the nose only, allowed to familiarize for 15 seconds, then rinsed with water for 1 minute (see Table 8).
The viscosities in Tables 2, 3, 5, and 6 were measured with a BM viscometer (manufactured by Tokimec, measurement conditions: rotor No. 1, 60 rpm, 30 ° C.).

From Table 4, in Examples 1-8, it turns out that it is excellent in the square plug removal effect. Moreover, also in Examples 9 to 11, an excellent effect of removing horn plugs was obtained.
Moreover, from Tables 5 and 6, it can be seen that Examples 12 to 32 are also excellent in the effect of removing plugs.
Moreover, since it is the method of apply | coating a chemical | medical agent and irrigating and washing | cleaning all, it turns out that irritation is low. Moreover, since the method of Examples 1-32 does not need to dry a pack etc., it does not take time.
On the other hand, it can be seen from Tables 7 and 8 that in Comparative Examples 1 to 7, the effect of removing the plug is inferior.
In addition, about the cleaning composition produced in Examples 12-31, it evaluated also about the skin feel of washing up as follows.
The eight female evaluation panels were subjected to sensory evaluation on the following criteria for the skin feel after washing, and the total score of eight persons was obtained. The results are also shown in Table 5.
3: I felt that the skin was moist and moist.
2: I felt that it was slightly sticky or the skin was somewhat bulky.
1: I felt that there was much stickiness or the skin became bulky.
When the detergent composition produced in Examples 12-31 is used, it turns out that the skin feeling after washing is favorable.

Claims (5)

(A) a step of adapting to the skin an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase being an aqueous phase;
(B) including a step of allowing the skin to be blended with an agent whose continuous phase is an oil phase,
A method for cleaning the skin, wherein the step (B) is performed after the step (A). (A) a step of adapting to the skin an agent comprising a water-soluble solvent, a surfactant, and water, the continuous phase being an aqueous phase;
(C) a step of adapting an agent composed of an isotropic one liquid phase containing an oil agent, a surfactant, a water-soluble solvent, and water, each of the oil phase and the aqueous phase being a continuous phase, to the skin;
(B) including a step of allowing the skin to be blended with an agent whose continuous phase is an oil phase,
A skin cleaning method in which the step (C) is performed after the step (A), and then the step (B) is performed. (A) O / W emulsion agent containing 1 to 2 oil agent, 1 to 2 hydroxyl groups, a compound having 2 to 6 carbon atoms, a surfactant, and water, and having a continuous phase composed of an aqueous phase, is applied to the skin. Process,
(C) Moisture is evaporated from the agent, the phase is changed to an isotropic one liquid phase in which the oil phase and the aqueous phase are each a continuous phase, and the agent consisting of the isotropic one liquid phase is applied to the skin. Process,
(B) and a step of evaporating moisture from the agent composed of one isotropic liquid phase, changing the continuous phase into an oil phase, and allowing the agent composed of the oil phase to conform to the skin. How to clean the skin.   The skin washing method according to any one of claims 1 to 3, further comprising: (D) adding water after removing (B) from the skin, and removing the agent from the skin.   The skin cleaning method according to any one of claims 1 to 4, wherein the skin cleaning method is a cleaning method for removing horn plugs of skin.

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