JP7526981B2 - Shampoo Composition - Google Patents

Description

The present invention relates to a shampoo composition containing a specific cationic polymer and an amino acid type surfactant.

In general, shampoo compositions contain sulfate-based anionic surfactants to remove dirt from hair. However, while sufficient cleansing power can be ensured, there is a problem that hair becomes rough and tangled, making it difficult to run your fingers through. For this reason, amino acid-based surfactants have been added to improve cleansing performance while reducing the roughness during washing. However, shampoo compositions using amino acid-based surfactants tend to foam less well than shampoo compositions using other anionic surfactants.

The shampoo composition disclosed in Patent Document 1 has been known. Patent Document 1 discloses a shampoo composition that contains sodium methyl cocoyl taurate and an N-acyl amino acid salt as amino acid surfactants, as well as polyquaternium-10 as a cationic polymer. This shampoo composition improves foaming by using the cationic polymer.

JP 2018-172315 A

However, the shampoo composition of Patent Document 1 causes overconditioning, in which the cationic polymer contained in the shampoo is excessively adsorbed onto the hair, and the conditioning ingredients in the treatment applied thereafter do not adhere to the hair, resulting in hair becoming stiff and feeling poor after the treatment. Therefore, previous shampoo compositions have been unable to achieve both an effect of improving foaming and an effect of improving overconditioning. The feel after the treatment is independent of the feel during washing the hair.

The problem that the present invention aims to solve is to provide a shampoo composition that can improve foaming and reduce overconditioning.

The present invention is based on the discovery that by using a specific cationic polymer and an amino acid surfactant in combination in a shampoo composition, it is possible to achieve both improved foaming and improved overconditioning. Note that the mass % values indicating the content of the components are values in the formulation including solubilizers such as water, if any.

In order to solve the above problems, one aspect of the present invention is a shampoo composition that contains (A) polyquaternium-50, (B) at least one cationic polymer selected from polyquaternium-10 and guar hydroxypropyltrimonium chloride, and (C) an amino acid type surfactant.

In the shampoo composition, the component (B) may be polyquaternium-10.
In the shampoo composition, the component (C) may be at least one selected from sodium methyl cocoyl taurate, sodium lauroyl methylalanine, sodium lauroyl sarcosine, and sodium lauroyl aspartate.

The shampoo composition may further comprise (D) polyquaternium-22.
In the shampoo composition, the content of anionic surfactants other than the component (C) may be less than 6 mass %.

The shampoo composition may be a transparent formulation.

The present invention improves foaming and reduces overconditioning.

One embodiment of the shampoo composition of the present invention will be described below. The shampoo composition of this embodiment contains at least (A) polyquaternium-50, (B) at least one cationic polymer selected from polyquaternium-10 and guar hydroxypropyltrimonium chloride, and (C) an amino acid type surfactant. It may further contain, for example, (D) polyquaternium-22.

Component (A) improves foaming and reduces overconditioning. Commercially available products such as Plussize L-410W and Plussize L-402W may be used as polyquaternium-50.

The lower limit of the content of component (A) in the shampoo composition is set appropriately, but is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more. When the content of component (A) is 0.01% by mass or more, it improves foaming and improves overconditioning.

The upper limit of the content of component (A) in the shampoo composition is set appropriately, but is preferably 2% by mass or less, more preferably 1% by mass or less, and even more preferably 0.5% by mass or less. When the content of component (A) is 2% by mass or less, overconditioning is improved. In addition, squeaking during hair washing is improved.

Component (B) is at least one cationic polymer selected from polyquaternium-10 and guar hydroxypropyltrimonium chloride. Component (B) particularly improves foaming. It also reduces squeaking during washing. As polyquaternium-10, commercially available products may be used, such as Leoguard G, Leoguard GP, and Leoguard MLP (manufactured by Lion Specialty Chemicals), UCARE Polymer JR-125, JR-400, JR-30M, LR-400, and LR-30M (manufactured by Dow Chemical), Cellcoat SC-230M (manufactured by Akzo Nobel), Catinal LC200, HC200, LC-100, and HC-100 (manufactured by Toho Chemical Industry Co., Ltd.), etc. As for the (B) component, one type of (B) component may be used alone, or two or more types of (B) components may be used in appropriate combination. Among the above-mentioned (B) components, polyquaternium-10 is preferred from the viewpoint of excellent foaming and reducing squeakiness during washing hair.

The lower limit of the content of component (B) in the shampoo composition is set appropriately, but is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more. When the content of component (B) is 0.05% by mass or more, foaming is improved. In addition, squeaking during hair washing is reduced.

The upper limit of the content of component (B) in the shampoo composition is set appropriately, but is preferably 1% by mass or less, more preferably 0.8% by mass or less, and even more preferably 0.6% by mass or less. When the content of component (B) is 1% by mass or less, overconditioning is improved.

Component (C) reduces the squeaking sound that occurs when washing hair. Specific examples of component (C) include N-acylamino acid surfactants. N-acylamino acid surfactants are salts of amino acids having saturated or unsaturated acyl groups, and salts of analogs of the same amino acids. Specific examples of the amino acids include glutamic acid, glycine, aspartic acid, alanine, phenylalanine, leucine, isoleucine, methionine, proline, tryptophan, valine, serine, N-methylglycine (sarcosine), N-methylalanine, etc. Specific examples of the analogs of the amino acids include 2-aminoethanesulfonic acid (taurine), N-methyltaurine, etc. In addition, the acidic amino acids and their analogs may be in any of the D-, L-, and DL-forms.

Specific examples of counter ions of the anion group include, for example, sodium, potassium, magnesium, monoethanolamine, triethanolamine, etc. Specific examples of N-acylamino acid type surfactants include, for example, triethanolamine cocoyl glutamate (TEA cocoyl glutamate), sodium cocoyl methyl taurate, sodium lauroyl methyl alanine, sodium lauroyl sarcosine, sodium lauroyl aspartate, sodium lauroyl methyl taurate, sodium stearoyl glutamate, sodium myristoyl glutamate, sodium palmitoyl proline, potassium lauroyl silk amino acid, etc. As the (C) component, one type of (C) component may be used alone, or two or more types of (C) components may be used in appropriate combination. Among these, sodium cocoyl methyl taurate, sodium lauroyl methyl alanine, sodium lauroyl sarcosine, and sodium lauroyl aspartate are preferred from the viewpoint of excellent foaming improvement effect and overconditioning improvement effect.

The lower limit of the content of component (C) in the shampoo composition is set appropriately, but is preferably 3% by mass or more, more preferably 5% by mass or more, and even more preferably 6% by mass or more. When the content of component (C) is 3% by mass or more, foaming is improved.

The upper limit of the content of component (C) in the shampoo composition is set appropriately, but is preferably 12% by mass or less, more preferably 10% by mass or less, and even more preferably 9% by mass or less. When the content of component (C) is 12% by mass or less, the squeaking sound during hair washing is improved.

When used in combination with the above components, component (D) particularly improves foaming and improves overconditioning. It also reduces squeaking during hair washing. Therefore, the shampoo composition preferably contains component (D). As component (D), a commercially available product may be used, such as Marcoat 280 (manufactured by Luvrisol).

The lower limit of the content of component (D) in the shampoo composition is set appropriately, but is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more. When the content of component (D) is 0.01% by mass or more, it particularly improves foaming and improves overconditioning.

The upper limit of the content of component (D) in the shampoo composition is set appropriately, but is preferably 2% by mass or less, more preferably 1% by mass or less, and even more preferably 0.5% by mass or less. When the content of component (D) is 2% by mass or less, foaming is improved.

The lower limit of the mass ratio (A/B) of the content of component (A) to the content of component (B) in the shampoo composition may be appropriately set, but is preferably 0.05 or more, more preferably 0.5 or more, and even more preferably 1 or more. A mass ratio of 0.05 or more improves foaming and reduces overconditioning.

The upper limit of the mass ratio (A/B) of the content of component (A) to the content of component (B) in the shampoo composition may be appropriately set, but is preferably 5 or less, more preferably 4 or less, and even more preferably 3 or less. When this mass ratio is 5 or less, the foaming is improved and the squeaking during hair washing is improved.

The lower limit of the mass ratio (A+B)/(C) of the sum of the contents of the (A) and (B) components to the content of the (C) component in the shampoo composition may be appropriately set, but is preferably 0.03 or more, more preferably 0.06 or more, and even more preferably 0.08 or more. When this mass ratio is 0.03 or more, it improves foaming and improves overconditioning.

The upper limit of the mass ratio (A+B)/(C) of the total content of the (A) component and the (B) component to the content of the (C) component in the shampoo composition is set appropriately, but is preferably 0.5 or less, more preferably 0.3 or less, and even more preferably 0.2 or less. When this mass ratio is 0.5 or less, overconditioning is improved. In addition, squeaking during hair washing is improved.

The shampoo composition may further contain ingredients other than those mentioned above, as necessary, such as solubilizers, water-soluble polymers other than those mentioned above, inorganic polymers, oily ingredients, polyhydric alcohols, surfactants other than those mentioned above, pH adjusters, sugars, preservatives, stabilizers, extracts of animals, plants or microorganisms, herbal extracts, vitamins, fragrances, antioxidants, chelating agents, amino acids, ultraviolet absorbers, inorganic salts, acid dyes, hair dyes, itching suppressants, cooling agents, etc.

A solubilizer is blended, for example, when the shampoo composition is made into a liquid. Examples of solubilizers used include water and organic solvents (solvents). Specific examples of organic solvents include ethanol, n-propanol, isopropanol, methyl cellosolve, ethyl cellosolve, methyl carbitol, ethyl carbitol, benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamic alcohol, anise alcohol, p-methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, ethylene glycol phenyl ether (phenoxyethanol), phenoxyisopropanol, 2-benzyloxyethanol, N-alkylpyrrolidone, alkylene carbonate, alkyl ether, etc. These solubilizers may be used alone or in combination of two or more types. Of these, water is preferably used because of its excellent ability to dissolve other components in the shampoo composition. When water is used as a solvent, the water content in the shampoo composition (content at the time of use) is preferably 40% by mass or more, more preferably 50% by mass or more.

Water-soluble polymers other than those mentioned above impart appropriate viscosity and other properties to the shampoo composition. Therefore, the shampoo composition may contain water-soluble polymers within a range that does not impair the effects of the present invention. Examples of water-soluble polymers include natural polymers, semi-synthetic polymers, and synthetic polymers. Specific examples of natural polymers include starch, guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, casein, albumin, collagen, dextrin, triglucopolysaccharide (pullulan), etc.

Specific examples of semi-synthetic polymers include, for example, methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxyethylcellulose dimethyl diallyl ammonium chloride, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, hydroxypropylmethylcellulose, cationic celluloses other than those mentioned above, cationic guar gums other than those mentioned above, starch phosphate esters, propylene glycol alginate esters, alginates, etc.

Specific examples of synthetic polymers include PEG-120 methyl glucose triisostearate, polyvinyl caprolactam, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), vinylpyrrolidone-vinyl acetate (VP/VA) copolymer, polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, sodium polyacrylate, polyacrylamide, polyethylene oxide, ethylene oxide-propylene oxide block copolymer, acrylic acid/alkyl acrylate copolymer, polydimethyldimethylenepyrrolidinium chloride (Polyquaternium-6) (Merck 100), a half ester of itaconic acid and polyoxyethylene (hereinafter referred to as "POE") alkyl ether, or an ester of methacrylic acid and POE alkyl ether, and at least one monomer selected from acrylic acid, methacrylic acid, and their alkyl esters. These water-soluble polymers may be used alone or in combination of two or more kinds.

Specific examples of inorganic polymers include bentonite, aluminum magnesium silicate, laponite, hectorite, silicic anhydride, etc. These inorganic polymers may be used alone or in combination of two or more inorganic polymers.

Oily components impart a moisturizing feeling to hair. Therefore, the shampoo composition may contain oily components within a range that does not impair the effects of the present invention. Examples of oily components include fats and oils, waxes, hydrocarbons, ester oils, higher alcohols, higher fatty acids, alkyl glyceryl ethers, silicones, etc.

Specific examples of fats and oils include, for example, Argania spinosa kernel oil, olive oil, camellia oil, shea butter, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado oil, macadamia nut oil, castor oil, coconut oil, evening primrose oil, apricot kernel oil, persic oil, peach kernel oil, palm oil, egg yolk oil, etc. Specific examples of waxes include, for example, lanolin, beeswax, candelilla wax, carnauba wax, jojoba oil, etc. Specific examples of hydrocarbons include paraffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, mineral oil, squalane, polybutene, polyethylene, microcrystalline wax, petrolatum, liquid paraffin, light isoparaffin, light liquid isoparaffin, isoparaffin, α-olefin oligomer, synthetic squalane, etc.

Specific examples of ester oils include diisopropyl adipate, isopropyl myristate, cetyl octanoate, isononyl isononanoate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, myristyl myristate, isotridecyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, cholesteryl/lanosteryl fatty acids having 10 to 30 carbon atoms, cetyl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid esters, dipentaerythritol fatty acid esters, cetyl caprate, glyceryl tricaprylate, diisostearyl malate, dioctyl succinate, cetyl 2-ethylhexanoate, and hydrogenated castor oil isostearate.

Specific examples of higher alcohols include cetyl alcohol (cetanol), 2-hexyldecanol, stearyl alcohol, isostearyl alcohol, cetostearyl alcohol, oleyl alcohol, arachyl alcohol, behenyl alcohol, 2-octyldodecanol, lauryl alcohol, myristyl alcohol, decyltetradecanol, lanolin alcohol, etc.

Specific examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, 12-hydroxystearic acid, oleic acid, lanolin fatty acid, etc. Specific examples of alkyl glyceryl ethers include batyl alcohol, chimyl alcohol, selachyl alcohol, isostearyl glyceryl ether, etc.

Specific examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, hydroxyl-terminated dimethylpolysiloxane, highly polymerized silicone, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, fluorine-modified silicone, polyether-modified silicone, etc. These oily components may be used alone or in combination of two or more types.

Examples of polyhydric alcohols include glycol and glycerin. Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, highly polymerized polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, and 1,3-butylene glycol. Examples of glycerin include glycerin, diglycerin, and polyglycerin. These polyhydric alcohols may be used alone or in combination of two or more polyhydric alcohols.

Surfactants other than those mentioned above emulsify or solubilize the shampoo composition during use as an emulsifier or a component for solubilizing each component, thereby adjusting the viscosity and improving the viscosity stability. They also improve the cleansing properties and feel of the hair. Therefore, the shampoo composition may contain surfactants other than those mentioned above within a range that does not impair the effects of the present invention. Examples of surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants other than those mentioned above.

Specific examples of anionic surfactants include alkyl ether sulfates, alkyl sulfates, alkyl ether sulfate ester salts, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonic fatty acid salts, mono- or diester-type surfactants, sulfosuccinates, and derivatives thereof. Specific examples of the counter ions of the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, and the like. More specifically, examples of alkyl ether sulfate ester salts include sodium POE lauryl ether sulfate. Specific examples of alkyl sulfate salts include sodium lauryl sulfate, sodium cetyl sulfate, and the like. Specific examples of derivatives of alkyl sulfate salts include sodium POE lauryl sulfate, and the like. Specific examples of alkyl or alkenyl ether carboxylate salts include sodium steareth-4 carboxylate, and the like. Specific examples of sulfosuccinate salts include disodium lauryl sulfosuccinate, and the like.

The upper limit of the content of anionic surfactants other than component (C) in the shampoo composition is set appropriately, but is preferably less than 6% by mass, more preferably 5% by mass or less, and even more preferably 4% by mass or less. If the content of anionic surfactants other than component (C) is less than 6% by mass, the squeaking sound during hair washing is improved.

Specific examples of cationic surfactants include lauryl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride, alkyl trimethyl ammonium chloride, distearyl dimethyl ammonium chloride, cetyl trimethyl ammonium bromide, stearyl trimethyl ammonium bromide, ethyl lanolin fatty acid aminopropyl ethyl dimethyl ammonium sulfate, stearyl trimethyl ammonium saccharin, cetyl trimethyl ammonium saccharin, methacryloyloxyethyl trimethyl ammonium chloride, behenyl trimethyl ammonium methyl sulfate, behenyl dimethyl amine, behenic acid diethyl aminoethyl amide, behenic acid dimethyl aminopropyl amide, behenic acid dimethyl aminoethyl amide, stearyl dimethyl amine, palmitoxypropyl dimethyl amine, stearoxypropyl dimethyl amine, dimethyl aminopropyl amide stearate, etc. Specific examples of alkyl trimethyl ammonium chloride include behenyl trimethyl ammonium chloride, arachidyl trimethyl ammonium chloride, etc.

Specific examples of amphoteric surfactants include cocobetaine, lauramidopropyl betaine, cocamidopropyl betaine, sodium lauroamphoacetate, sodium cocoamphoacetate, coconut oil fatty acid amidopropyl betaine, lauryl betaine (lauryl dimethylaminoacetate betaine), sodium lauryl aminopropionate, hydroxyalkyl (C12-14) hydroxyethyl sarcosine, etc.

Specific examples of nonionic surfactants include fatty acid alkanolamide nonionic surfactants, ether-type nonionic surfactants, ester-type nonionic surfactants, alkyl glucosides, etc.

Examples of fatty acid alkanolamide-based nonionic surfactants include fatty acid alkanolamides, polyalkylene oxide fatty acid alkanolamides, and the like. Specific examples of fatty acid alkanolamides include lauric acid monoethanolamide, stearic acid monoethanolamide, and the like. Specific examples of polyalkylene oxide fatty acid alkanolamides include POE lauric acid monoethanolamide, POE coconut oil fatty acid monoethanolamide, polyoxypropylene myristic acid monoethanolamide, polyoxypropylene coconut oil fatty acid monoisopropanolamide, and the like. Specific examples of POE lauric acid monoethanolamide include PEG-3 lauramide, and the like.

Specific examples of ether-type nonionic surfactants include POE cetostearyl hydroxymyristyrene ether, POE cetyl ether (ceteth), POE stearyl ether (steareth), POE behenyl ether, POE oleyl ether (oleth), POE lauryl ether (laureth), POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE nonylphenyl ether, POE octylphenyl ether, POE polyoxypropylene cetyl ether, POE polyoxypropylene decyltetradecyl ether, etc. Specific examples of POE cetostearyl hydroxymyristyrene ether include ceteareth-60 myristyl glycol, etc.

Specific examples of ester-type nonionic surfactants include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glycerin monostearate, POE glycerin monomyristate, POE sorbit tetraoleate, POE sorbit hexastearate, POE sorbit monolaurate, POE coconut oil fatty acid glycerin, POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, and polyethylene glycol distearate. , polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, POE sorbitan monoisostearate, sucrose fatty acid ester, decaglyceryl monolaurate (polyglyceryl-10 laurate), decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, POE reduced lanolin, etc. Specific examples of POE coconut oil fatty acid glycerin include, for example, coconut oil fatty acid PEG-7 glyceryl, etc. Specific examples of polyethylene glycol distearate include, for example, PEG-150 distearate, etc. Specific examples of POE sorbitan monoisostearate include PEG-20 sorbitan isostearate, etc. Specific examples of POE sorbitan monolaurate include PEG-80 sorbitan laurate, etc.

Specific examples of alkyl glucosides include alkyl (carbon number 8 to 16) glucoside, POE methyl glucoside, POE dioleate methyl glucoside, etc. These nonionic surfactants may be used alone or in combination of two or more types.

A pH adjuster may be added to adjust the pH of the shampoo composition. Examples of pH adjusters include inorganic acids, organic acids, and their salts. Specific examples of inorganic acids include phosphoric acid, hydrochloric acid, nitric acid, sulfuric acid, and boric acid. Specific examples of phosphoric acid include orthophosphoric acid, polyphosphoric acid, pyrophosphoric acid, and metaphosphoric acid. Specific examples of organic acids include citric acid, tartaric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, gluconic acid, glucuronic acid, and benzoic acid. Specific examples of organic acid salts include sodium salts, potassium salts, and ammonium salts. Specific examples of sugars include monosaccharides such as glucose and galactose, disaccharides such as maltose, sucrose, fructose, and trehalose, and sugar alcohols such as sorbitol. Specific examples of preservatives include paraben, methylparaben, and sodium benzoate. Specific examples of stabilizers include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, etc. Specific examples of animal, plant, or microbial extracts include Sapindus trifoliatus fruit extract, hydrolyzed yeast extract, etc. Specific examples of antioxidants include ascorbic acids and sulfites, etc. Specific examples of chelating agents include edetic acid (ethylenediaminetetraacetic acid (EDTA)), disodium edetate, tetrasodium edetate, diethylenetriaminepentaacetic acid and its salts, ethylenediaminehydroxyethyltriacetic acid and its salts, and hydroxyethanediphosphonic acid (HEDP) and its salts, etc. Specific examples of amino acids include threonine, arginine, theanine, taurine, etc. Specific examples of inorganic salts include sodium chloride, sodium carbonate, etc. Specific examples of itching inhibitors include salicylic acid and its derivatives, etc. A specific example of a cooling agent is l-menthol. These other ingredients may be used alone or in combination of two or more kinds.

The formulation of the shampoo composition is not particularly limited, and specific examples of the formulation at 25°C include liquids such as aqueous solutions and emulsions, gels, foams, creams, etc. Also, it can be an aerosol, non-aerosol, etc., and in the case of a non-aerosol, it can be further in various forms such as a squeeze foamer type and a pump foamer type. In the case of an aerosol, a known propellant and foaming agent can be applied. Specific examples of the propellant or foaming agent include liquefied petroleum gas (LPG), dimethyl ether (DME), nitrogen gas, carbon dioxide gas, etc. In addition, the appearance of the shampoo composition may be either a transparent formulation or an opaque formulation, but a transparent formulation is preferable in order to improve the appearance characteristics. Here, a transparent formulation refers to, for example, a formulation in which 30 mL of the shampoo composition is poured into a transparent No. 4 standard bottle (about 37 mL capacity), and the appearance is visually observed, and 8-point characters placed behind the standard bottle can be read.

The action and effects of the shampoo composition of the present embodiment will be described.
(1) The shampoo composition of the present embodiment contains (A) polyquaternium-50, (B) at least one cationic polymer selected from polyquaternium-10 and guar hydroxypropyltrimonium chloride, and (C) an amino acid type surfactant. Therefore, it improves foaming and improves overconditioning. It also reduces squeaking during hair washing.

(2) When the shampoo composition further contains (D) polyquaternium-22, it further improves foaming and overconditioning. It also further improves the squeaking sound when washing hair.

(3) When the shampoo composition further contains less than 6 mass% of anionic surfactants other than component (C), the squeaking sound during hair washing is further improved.
The above embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other as long as they are not technically inconsistent.

The shampoo composition of the above embodiment includes a shampoo composition (hair shampoo), as well as a rinse-in shampoo, a scalp shampoo, and the like.
The shampoo composition of the above embodiment may be used in the form of a mixture of the various components, and a portion of each component contained in each of the components constituting the shampoo composition may be stored as a separate agent. Even in this configuration, the composition improves foaming and improves over-conditioning. It also improves the squeaking sound when washing hair.

Next, the above embodiment will be described in more detail with reference to examples and comparative examples. Note that the present invention is not limited to the configurations described in the examples section.
Shampoo compositions containing each component shown in Tables 1 and 2 were prepared. The numerical values in the columns showing each component in Tables 1 and 2 indicate the content of the component in the column, and the unit is mass %. First, a straight human hair wig (hereinafter simply referred to as a wig) was prepared, and the wig was bleached once with a bleaching agent (Promaster EX LT, manufactured by Hoyu Co., Ltd.), washed with water, and then dried. The wig bleached by this operation was used as an evaluation wig. The evaluation wig was used, and after wetting with water, the shampoo composition of each formulation was evenly applied to the entire wig, and the wig was rubbed and foamed, then washed with water, and towel-dried. The foaming and feel during hair washing were evaluated according to the following criteria. The wigs treated as described above were further evaluated for the effect of improving overconditioning according to the method and criteria shown below. In the table, the symbols "A", "B", "C", and "D" indicate compounds corresponding to the components (A), (B), (C), and (D) in the claims of the present application, respectively. Meanwhile, the symbol "b" in the table indicates a comparative compound of the component (B) in the claims of the present application.

(Foaming)
Five panelists visually evaluated the amount of foaming according to the following criteria. When the amount of foaming was very high, it was scored as excellent (5 points), when the amount of foaming was high, it was scored as good (4 points), when the amount of foaming was somewhat high, it was scored as fair (3 points), when the amount of foaming was somewhat low, it was scored as slightly poor (2 points), and when the amount of foaming was low, it was scored as poor (1 point). The average score of each panelist was calculated, and the average score of 4.6 points or more was scored as "excellent: 5", 3.6 points or more but less than 4.6 points was scored as "good: 4", 2.6 points or more but less than 3.6 points was scored as "fair: 3", 1.6 points or more but less than 2.6 points was scored as "slightly poor: 2", and less than 1.6 points was scored as "poor: 1". The results are shown in the "foaming" column of Tables 1 and 2.

(Overconditioning)
The wigs of each example that were towel-dried as described above were further treated with treatment (Bigen Treatment: manufactured by Hoyu Co., Ltd.) according to the method described in the instruction manual, and washed with water. After towel-drying, the wigs were dried with a hair dryer. The feel of the wigs of each example that were treated in this way was evaluated according to the following criteria. When stiffness was greatly improved, it was excellent (5 points), when stiffness was improved, it was good (4 points), when stiffness was improved slightly, it was fair (3 points), when stiffness was not improved much, it was slightly poor (2 points), and when stiffness was not improved at all, it was poor (1 point). The average score of each panelist was calculated, and the average score of 4.6 points or more was "excellent: 5", 3.6 points or more but less than 4.6 points was "good: 4", 2.6 points or more but less than 3.6 points was "fair: 3", 1.6 points or more but less than 2.6 points was "slightly poor: 2", and less than 1.6 points was "poor: 1", and these were the evaluation results. The results are shown in the "overconditioning" column of Tables 1 and 2.

(Feel when washing hair)
The feel during hair washing was judged by five panelists according to the following criteria. When there was no squeaking and the feel was very good, the rating was excellent (5 points); when there was no squeaking and the feel was good (4 points); when there was little squeaking and the feel was slightly good, the rating was fair (3 points); when there was a little squeaking and the feel was slightly poor, the rating was slightly poor (2 points); and when there was a lot of squeaking and the feel was poor, the rating was poor (1 point). The average of the ratings of each panelist was calculated, and the average of 4.6 points or more was rated as "excellent: 5", 3.6 points or more but less than 4.6 points was rated as "good: 4", 2.6 points or more but less than 3.6 points was rated as "fair: 3", 1.6 points or more but less than 2.6 points was rated as "slightly poor: 2", and less than 1.6 points was rated as "poor: 1". The results are shown in the "Feel during hair washing" column in Tables 1 and 2.

As shown in Table 1, it was confirmed that each Example achieved a result of at least pass for each evaluation item.

As shown in Table 2, Comparative Example 1, which does not contain component (A), was confirmed to have inferior evaluations of foaming and overconditioning compared to each Example. Comparative Example 2, which does not contain component (B), was confirmed to have inferior evaluations of foaming and feel when washing hair compared to each Example. Comparative Example 3, which does not contain component (B) and contains polyquaternium-6 as a cationic polymer, was confirmed to have inferior evaluations of overconditioning compared to each Example. Comparative Example 4, which does not contain component (A) and contains polyquaternium-6 as a cationic polymer, was confirmed to have inferior evaluations of overconditioning compared to each Example. Comparative Example 5, which does not contain component (C) and contains an anionic surfactant other than component (C), was confirmed to have inferior evaluations of feel when washing hair compared to each Example.

Claims (4)

A shampoo composition comprising: (A) 0.01% by mass or more and 2% by mass or less of polyquaternium-50; (B) 0.05% by mass or more and 1% by mass or less of at least one cationic polymer selected from polyquaternium-10 and guar hydroxypropyltrimonium chloride; and (C) 3% by mass or more and 12% by mass or less of an amino acid type surfactant,
A shampoo composition further comprising (D) polyquaternium-22. The shampoo composition according to claim 1, wherein the component (B) is polyquaternium-10. The shampoo composition according to claim 1 or 2, wherein the component (C) is at least one selected from sodium methyl cocoyl taurate, sodium lauroyl methyl alanine, sodium lauroyl sarcosine, and sodium lauroyl aspartate. The shampoo composition according to any one of claims 1 to 3 , which is a clear formulation.