JP2008001644A - Gel cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a horny plug-removing cosmetic developing low irritancy while keeping excellent horny plug-removing effect. <P>SOLUTION: The gel cosmetic contains (1) a 6-20C dibasic acid diester and (2) spherical (vinyldimethicone/methicone silsesquioxane) crosspolymer powder. The 6-20C dibasic acid diester is preferably selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate, the spherical (vinyldimethicone/methicone silsesquioxane) crosspolymer powder preferably has an average particle diameter of 30 μm, the cosmetic preferably further contains spherical polyethylene powder, and the cosmetic preferably further contains an alkyl-modified carboxyvinyl polymer and/or its salt. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cosmetic, and more particularly, to a gel-like cosmetic suitable for removing horn plugs.

  The problem of horn plugs, a complex of lipid metabolites and stratum corneum that accumulates in pores, especially in the pores of the nose, in today's dietary habits that have significantly increased lipid intake. Is becoming a serious problem compared to a long time ago. Excessive accumulated horn plugs are said to cause acne and other symptoms due to microorganisms nested in the plugs. Even if such symptoms do not occur, the presence of dark pores impairs the appearance of the person and may adversely affect the impression formation of others. Against this background, various means have been developed for efficiently and safely removing the plugs formed in the pores, particularly the pores of the nose. Such means include, for example, a method in which a square plug is adhered to a sticky sheet and then removed by peeling it off (see, for example, Patent Document 1), and an angle is obtained using an ester of lauroyl sarcosine. A method of dissolving the lipid of the stopper and removing it by a treatment such as suction (for example, see Patent Document 2), and a method of dissolving and removing the corner plug together with the stratum corneum by rubbing with a basic substance (for example, Patent Document 3), a method of removing while rubbing with a sticky foam (for example, see Patent Document 4), and a scrub cosmetic containing a keratolytic component such as urea or α-hydroxy acid to dissolve the keratin. And a method of scraping with a scrubbing agent (for example, see Patent Document 5). Among these, the method described in Patent Document 1 is highly safe and has a high removal effect, but requires suction by a suction device. In addition, the removal effect is the highest in the method described in Patent Document 5, but it is accompanied by the removal of horn plugs, although the expression of irritation due to abrasion is suppressed. There is a high possibility of stimulating. Accordingly, it has been desired to develop a cosmetic for removing horn plugs that has the same effect as that of the method described in Patent Document 5 but has a lower possibility of irritation.

  On the other hand, a technique for using a diester of a dibasic acid such as diisopropyl sebacate in a cosmetic is already known (see, for example, Patent Document 6), and a (vinyl dimethicone / methicone silsesquioxane) crosspolymer is used as a cosmetic. The technology used for the charge is already known (see, for example, Patent Document 7). However, a gel cosmetic containing 1) a dibasic acid diester having 6 to 20 carbon atoms and 2) a spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder is not known at all. It was also not known at all that a gel-like cosmetic material was excellent in the action of removing keratin plugs.

JP-A-2005-336124 JP 2005-97147 A JP 2004-75575 A JP 2001-139426 A JP 2003-292411 A JP-T-2004-529957 JP-T-2004-524379

  The present invention has been made under such circumstances, and an object of the present invention is to provide a cosmetic for removing keratin plugs that has an excellent horn plug removing effect and has a low possibility of irritation.

In view of such a situation, the present inventors, as a result of repeated earnest research efforts, seeking cosmetics for removal of horn plugs having a low possibility of irritation while having an excellent horn plug removal effect, Gel-like cosmetics comprising 1) a dibasic acid diester having 6 to 20 carbon atoms and 2) a spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder have such properties. I found out and completed the invention. That is, the present invention is as follows.
(1) A gel cosmetic comprising 1) a dibasic acid diester having 6 to 20 carbon atoms and 2) a spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder.
(2) The gel makeup according to (1), wherein the dibasic acid diester having 6 to 20 carbon atoms is selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate Fee.
(3) The gel cosmetic according to (1) or (2), wherein the spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder has an average particle size of 30 μm.
(4) The gel cosmetic according to any one of (1) to (3), further comprising spherical polyethylene powder.
(5) The gel cosmetic according to any one of (1) to (4), comprising an alkyl-modified carboxyvinyl polymer and / or a salt thereof.
(6) The gel cosmetic as set forth in any one of (1) to (5), which is a cosmetic used for removing square plugs.

  According to the present invention, it is possible to provide a cosmetic for removing horn plugs having an excellent effect of removing horn plugs and having a low possibility of irritation.

(1) Diester of a dibasic acid which is an essential component of the cosmetic of the present invention The cosmetic of the present invention is characterized by containing a diester of a dibasic acid having 6 to 20 carbon atoms as an essential component. That is, a dibasic acid having 2 to 10 carbon atoms and an alkyl diester having 2 to 6 carbon atoms are contained as essential components. The alkyl groups constituting the diester may be different or the same, but the same is more preferable. Preferred examples of such diesters include, for example, diethyl tartrate, diisopropyl tartrate, diethyl adipate, diisopropyl adipate, diethyl sebacate, diisopropyl sebacate, and diisopropyl sebacate is particularly preferred. These can contain only the seed | species, and can also contain it in combination of 2 or more type. Further, such components are general-purpose raw materials for cosmetics, and are easily available. In the gel-like cosmetic of the present invention, such a component has an action of facilitating detachment from the pores by dissolving lipids in the solid structure around the corner plug and the upper part of the corner plug. In particular, by loosening the lipid structure at the top of the horn plug, it works with the spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder described below, and in order to express such an action, in total amount, It is preferable to contain 0.01-10 mass% with respect to cosmetics whole quantity, More preferably, it is 0.05-1 mass%. This is because if the amount is too small, the above-mentioned effects may not be achieved, and if the amount is too large, the gel structure of the preparation may be impaired.

(2) (Vinyl Dimethicone / Methicone Silsesquioxane) Cross Polymer which is an Essential Component of the Cosmetic of the Present Invention The cosmetic of the present invention is a gel-like cosmetic and has a spherical shape (vinyl dimethicone / methicone silsesquioxane). Sun) Cross polymer powder is contained. The “powder” referred to in the present invention means a solid having an average particle size of 100 μm or less. The solid may have elasticity and plasticity. Such a (vinyl dimethicone / methicone silsesquioxane) cross polymer is a highly inorganic material having a solid structure having elasticity in which a C—C bond is mixed with a siloxy bond, and one of the silicon atoms of silica is a methyl group. It is a cross polymer in a form combined with a silicone structure, and the average particle diameter is preferably 1 to 50 μm, more preferably 5 to 40 μm. These can contain only the seed | species, and can also contain it in combination of 2 or more type. Such cross-polymers have commercial products, and such commercial products can be purchased and used. Examples of such commercially available products include “silicone KSP-100” (average particle size 5 μm; rubber hardness 30 durometer A) and “silicone KSP-101” (average particle size 12 μm) sold by Shin-Etsu Chemical Co., Ltd. Rubber hardness 30 durometer A), “silicone KSP-102” (average particle size 30 μm; rubber hardness 30 durometer A), “silicone KSP-105” (average particle size 2 μm; rubber hardness 75 durometer A), “silicone KSP- 300 ”(average particle size 5 μm; rubber hardness 40 durometer A) can be suitably exemplified. These are solids having elasticity and elasticity as indicated by the rubber hardness. Such softness is preferable for baldness. In particular, a relatively soft material of around 30 durometer A is particularly preferable. Among the commercially available products, “silicone KSP-102” is particularly preferable. This is because a particle having this particle size becomes a sebum adsorbent and at the same time a scrub agent with very little irritation. The cosmetic of the present invention expresses these two functions simultaneously. The preferable content of such components is preferably 1 to 5% by mass, more preferably 1.5 to 3% by mass, based on the total amount of the cosmetics.

(3) Gel-like cosmetic of the present invention The cosmetic of the present invention is a gel-like cosmetic and contains the essential components. As the gel, an aqueous gel is preferable, and an alkyl-modified carboxyvinyl polymer and / or a salt thereof is preferably used as a gelling agent that forms the aqueous gel. By using such a gelling agent, gelation can be achieved in the vicinity of neutrality, irritation to the skin can be suppressed to a very low level, and by adopting an aqueous gel dosage form, This is because the stopper is dispersed while maintaining its shape and can be easily removed. Examples of the alkyl-modified carboxyvinyl polymer that are commercially available include “Pemlen TR-1”, “Pemlen TR-2”, and “Carbopol 1382” (both manufactured by Goodrich). “Carbopol 1382” is particularly preferred, although a thickening action is exhibited at the lowest pH. As a salt of such a component, any salt usually used in cosmetics can be applied without particular limitation. For example, alkali metal salts such as sodium salt and potassium salt, alkaline earth metals such as calcium salt and magnesium salt Preferred examples include organic amine salts such as salts, ammonium salts, triethylamine salts, triethanolamine salts and monoethanolamine salts, and basic amino acid salts such as lysine salts and alginates. The preferable content of such components is 0.1 to 1% by mass, and more preferably 0.2 to 0.5% by mass, based on the total amount of the cosmetic material. Furthermore, in addition to such components, 10 to 60% by weight of the carboxyvinyl polymer and / or salt thereof can be used as an auxiliary gelling agent. Such an alkyl-modified carboxyvinyl polymer and / or salt thereof can be used. And a combination of carboxyvinyl polymer and / or a salt thereof is a preferred form. This is because a preferable viscosity is obtained in a preferable pH range.

  In addition to the spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder, which is the essential component, a polymer powder can also be contained. By containing such a polymer powder, It is also possible to scrape the insoluble components inside more efficiently. As such polymer powder, spherical polyethylene powder is preferable, and the particle size of the polyethylene powder is preferably 1-1000 μm, more preferably 5-600 μm. The shape is preferably spherical, and the spherical shape allows a maximum strain of plus or minus 10% from the circumscribed true sphere. As such polyethylene powder, it is preferable to combine two types of particle size distributions of large and small, and as the large particle size distribution, those having a particle size distribution of 200 to 600 μm can be preferably exemplified, The thing of 5-15 micrometers can be illustrated preferably. These can be classified to this size, or can be used after sieving, or commercially available products already having such a particle size distribution can be purchased and used. Examples of such commercially available products include “Flow Beads CL5007” (manufactured by Sumitomo Seika Co., Ltd.) having a particle size of 250 to 500 μm, “Flow Beads CL20200” (manufactured by Sumitomo Seika Co., Ltd.) having a particle size of 5 μm, and the like. Can be preferably exemplified. The mass ratio of the large and small polyethylene powders is preferably 25: 1 to 25: 4. Such a component seems to have an action of scraping the horn plug and an action of assisting the horn plug to come out of the pore. In order to exert such an effect, the polyethylene powder is preferably contained in a total amount of 0.1 to 5% by mass, preferably 0.1 to 1.5% by mass, based on the total amount of the cosmetic. It is more preferable. If the amount is too small, the above-mentioned effect may not be exhibited. If the amount is too large, the above-mentioned effect reaches a peak, and the diester of dibasic acid or the spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder. This is because the effect may be impaired.

  As long as the cosmetic composition of the present invention maintains a gel-like shape, a small amount of an oily component can be contained in the form of an emulsion. Preferably, however, the gel-like shape does not contain such an oily component. More preferred. The applicable cosmetic is not particularly limited as long as an aqueous gel-like dosage form can be used as the dosage form. However, in terms of its function, it is particularly useful as a cosmetic for removing square plugs. preferable. Of course, since the cosmetic itself of the present invention has excellent moisture retention, it can be used exclusively for this purpose. In addition to such components, the gel cosmetic of the present invention can contain optional components usually used in cosmetics. Such optional ingredients include, for example, macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, hydrogenated coconut oil Oil, wax, oils such as beeswax, owl, hardened castor oil, beeswax, candelilla wax, carnauba wax, botarou, lanolin, reduced lanolin, hard lanolin, jojoba wax , Hydrocarbons such as microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl Higher alcohols such as alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, cetyl lactate, diisostearyl malate, ethylene di-2-ethylhexanoate Glycol, neopentyl glycol dicaprate, glycerin di-2-heptylundecanoate, glycerin tri-2-ethylhexanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, tetra-2-ethylhexane Synthetic ester oils such as acid pentane erythritol; chain polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane; Cyclic polysiloxanes such as kutamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; silicones such as amino-modified polysiloxane, polyether-modified polysiloxane, alkyl-modified polysiloxane, and fluorine-modified polysiloxane Oils such as oils; fatty acid soap (sodium laurate, sodium palmitate, etc.), anionic surfactants such as potassium lauryl sulfate, alkylsulfuric acid triethanolamine ether; stearyltrimethylammonium chloride, benzalkonium chloride, laurylamine oxide Cationic surfactants such as: imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy-2 sodium Salt), betaine surfactants (alkylbetaines, amidebetaines, sulfobetaines, etc.), amphoteric surfactants such as acylmethyltaurine; sorbitan fatty acid esters (sorbitan monostearate, sorbitan sesquioleate, etc.), Glycerin fatty acids (such as glyceryl monostearate), propylene glycol fatty acid esters (such as propylene glycol monostearate), hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate, monostearic acid polyol) Chiethylene sorbitan, etc.), POE sorbite fatty acid esters (POE-sorbitol monolaurate, etc.), POE glycerin fatty acid esters (POE-glycerol monoisostearate, etc.), POE Fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (POE nonylphenyl ether, etc.), Pluronic types, POE / POP alkyl ethers Nonionic surface actives such as POE / POP2-decyltetradecyl ether, Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), sucrose fatty acid esters, alkyl glucosides, etc. Agents: polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, isoprene Polyhydric alcohols such as recall, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, 1,2-octanediol; triglucopolysaccharide; sodium pyrrolidonecarboxylate, lactic acid, sodium lactate, etc. Moisturizing ingredients; powders such as mica, talc, kaolin, synthetic mica, calcium carbonate, magnesium carbonate, anhydrous silicic acid (silica), aluminum oxide, barium sulfate, etc., whose surface may be treated; Bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine, bitumen, titanium oxide, zinc oxide inorganic pigments; surface may be treated, mica titanium, fish phosphorus foil, oxy Pearl agents such as bismuth chloride; red 202, red 228, red 226, yellow 4 and blue 40 which may be raked No. 4, Yellow No. 5, Red No. 505, Red No. 230, Red No. 223, Orange No. 201, Red No. 213, Yellow No. 204, Yellow No. 203, Blue No. 1, Green No. 201, Purple No. 201, Red No. 204 Organic pigments such as polyethylene powder, polymethyl methacrylate, nylon powder, organopolysiloxane elastomer, etc .; paraaminobenzoic acid UV absorbers; anthranilic acid UV absorbers; salicylic acid UV absorbers; Cinnamic acid UV absorbers; benzophenone UV absorbers; sugar UV absorbers; 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 4-methoxy-4′-t-butyldi UV absorbers such as benzoylmethane; lower alcohols such as ethanol and isopropanol; vitamin A or a derivative thereof; Mineral B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or derivatives thereof, vitamin B12 such as vitamin B12, vitamin B15 or derivatives thereof; α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate Preferred examples include vitamins such as vitamin E, vitamin D, vitamin H, pantothenic acid, panthetin, pyrroloquinoline quinone, and the like; and antibacterial agents such as phenoxyethanol. Among these, a particularly preferable component is a component that does not inhibit removal of a horn plug and can suppress a decrease in skin water retention caused by removal of the horn plug, and a triglucopolysaccharide is preferably exemplified as such a component. it can. As such triglucopolysaccharides, there are those commercially available for cosmetics, and such commercially available products can be used. As such a commercially available product, for example, “Pullulan” sold by Hayashibara Laboratory Co., Ltd. can be preferably exemplified. In order to exert the above action, the triglucopolysaccharide is preferably contained in an amount of 1 to 10% by mass, more preferably 2 to 6% by mass, based on the total amount of the cosmetic. In addition, 0.00005 to 0.0002 mass of the tea extract obtained by extracting the leaf portion of the camellia tea with 1,3-butanediol in order to prevent the occurrence of inflammation due to oxidation of the lipid remaining after removal of the horn plug % Content is also preferable.

  The gel cosmetic of the present invention can be produced by treating such essential components and optional components according to a conventional method.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it is needless to say that the present invention is not limited to such examples.

  A gel-like cosmetic 1 as a cosmetic of the present invention was produced according to the formulation shown below. In other words, after the components of A and B are heated to 80 ° C. and the component of C is dispersed in B, the mixture is neutralized by stirring and gelled, and this is stirred and cooled to obtain a gel-like cosmetic. 1 was obtained.

<Test Example 1>
About the corneal plug removal effect of the gel cosmetic 1, panelists 1 group 5 people and 4 groups 20 people were used, and the horn plug removal effect and the change of the horny layer barrier function after the horn plug removal were examined. As the sample, gel-like cosmetic 1, comparative example 1 in which diisopropyl sebacate of gel-like cosmetic 1 was replaced with water, and comparative example 2 in which “silicone KSP-102” was replaced with “flow beads CL5007” were used. It was. In other words, after washing the face, the panelist measures the transcutaneous dissipated moisture (TEWL) with “Tevameter” (integral), and then takes an enlarged photograph of the nose with a video microscope (manufactured by Moritec). The number of accumulated plugs per field of view was counted. Thereafter, the sample was scrubbed using a sample, and after the cosmetic was wiped off, the face was washed with water, and the TEWL and the number of square plugs per field of view were counted as before the test. The remaining percentage of square plugs was obtained by dividing the number of square plugs after the test by the number of square plugs before the test and multiplying by 100. The TEWL increase rate was obtained by subtracting TEWL before test from TEWL after test, dividing this by TEWL before test, and multiplying by 100. The results are shown in Table 3. As a result, the cosmetic of the present invention has a property that TEWL does not remarkably increase while exhibiting the same effect of removing horn plugs as a cosmetic containing urea, α-hydroxy acid, and granulated granules. Recognize.

  Gel-like cosmetics 2 to 4 were prepared by changing the diester of the dibasic acid of the gel-like cosmetic 1 and operating in the same manner. Further, this was evaluated by the method of Test Example 1. The results are shown in Table 4. From this, it can be seen that the same effect as the gel cosmetic 1 is achieved.

  The gel-like cosmetics 5 to 7 were prepared in the same manner by replacing the “silicone KSP-102” of the gel-like cosmetic 1 with other spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powders. Created. Further, this was evaluated by the method of Test Example 1. The results are shown in Table 4. From this, it can be seen that the same effect as the gel cosmetic 1 is achieved.

  In the same manner as in Example 1, a gel cosmetic 8 was produced according to the formulation shown below. When this was evaluated by the method of Test Example 1, the plug retention rate was 2.8 ± 3.5 (%), and the TEWL increase rate was 9.3 ± 7.2 (%). It turns out that it is preferable to use polyethylene powder together.

  The present invention can be applied to cosmetics.

Claims (6)

A gel cosmetic comprising 1) a dibasic acid diester having 6 to 20 carbon atoms and 2) a spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder. The gel cosmetic according to claim 1, wherein the dibasic acid diester having 6 to 20 carbon atoms is selected from diethyl adipate, diisopropyl adipate and diisopropyl sebacate. The gel cosmetic according to claim 1 or 2, wherein the spherical (vinyl dimethicone / methicone silsesquioxane) cross-polymer powder has an average particle size of 30 µm. The gel cosmetic according to any one of claims 1 to 3, further comprising spherical polyethylene powder. The gel cosmetic according to any one of claims 1 to 4, comprising an alkyl-modified carboxyvinyl polymer and / or a salt thereof. The gel-like cosmetic according to any one of claims 1 to 5, wherein the gel-like cosmetic is used for removing horn plugs.