Hair washing composition

Abstract

To provide a hair washing composition that can form sterically balanced, uniform and beautiful wavy curls.SOLUTION: The present invention provides a hair washing composition which contains the following components (a), (b) and (c): (a) 0.1 mass% to 18 mass% of one or more compounds selected from polyalkylene glycol ethers and alkylene glycols, (b) 5 mass% or more of one or more surfactants selected from carboxylic acid-based anionic surfactants, sulfonic acid-based anionic surfactants, ether sulfate-based anionic surfactants and amphoteric surfactants, and (c) an organic acid or a salt thereof.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair wash composition. [Background technology]

[0002] BACKGROUND ART Various hair cosmetics have been proposed to achieve and maintain beautiful waves and curls in a desirable state (for example, Patent Documents 1 to 4). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 04-230614 [Patent Document 2] Japanese Patent Application Laid-Open No. 2015-105271 [Patent Document 3] Japanese Patent Application Laid-Open No. 2012-131784 [Patent Document 4] Japanese Patent Publication No. 2020-186222 Summary of the Invention [Problem to be solved by the invention]

[0004] The hair cosmetics described in Patent Documents 1 to 3 are intended to impart elasticity to hair or hold hair bundles together by adhering to the hair surface, but are not intended at all to control the structure of hair bundles to make them look wavy or curly.

[0005] On the other hand, Patent Document 4 describes that calcium ions in water accumulate in hair during daily hair washing, causing problems such as partially reversing the direction of curls and making them messy, thereby damaging their beauty, and that treating hair with three specific hair treatment agents in a predetermined order flushes out the calcium ions accumulated in the hair and reforms the inside of the hair, resulting in a beautiful curl shape with a uniform phase. However, the hair treatment described in Patent Document 4 uses three agents and requires leaving time and heating, making it complicated and time-consuming for consumers.

[0006] Therefore, the present invention relates to a hair wash composition that can control the structure of hair strands and form beautiful, uniform, three-dimensional, and manageable wavy curls simply by washing your hair, which is an everyday hair care activity. [Means for solving the problem]

[0007] The present inventors have discovered that beautiful wavy curls can be formed with high reproducibility by forming a spiral structure in a wet hair bundle. They have also discovered that washing wavy curled hair with a hair cleanser containing a specific compound makes it easier for the wet hair bundle to form a spiral shape after washing, thereby achieving beautiful, uniform, three-dimensional, and manageable wavy curls, and have completed the present invention.

[0008] The present invention provides a hair wash composition containing the following components (a), (b), and (c): (a) 0.1% by mass or more and 18% by mass or less of one or more compounds selected from polyalkylene glycol ethers and alkylene glycols (b) 5% by mass or more of one or more surfactants selected from carboxylic acid type anionic surfactants, sulfonic acid type anionic surfactants, ether sulfate type anionic surfactants, and amphoteric surfactants (c) Organic acids or their salts [Effects of the Invention]

[0009] The hair wash composition of the present invention makes it easier for wet hair strands after washing to take on a spiral shape, and can form beautiful, uniform, three-dimensional, and manageable wavy curls. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 10 is a diagram illustrating a method for calculating a spiral ratio. DETAILED DESCRIPTION OF THE INVENTION

[0011] [Component (a): One or more compounds selected from polyalkylene glycol ethers and alkylene glycols] Component (a) is one or more compounds selected from polyalkylene glycol ethers and alkylene glycols. Examples of polyalkylene glycol ethers include compounds represented by the following general formula (1).

[0012] [ka]

[0013] [In the formula, R 1 represents a hydrogen atom or a methyl group, and R 2 represents an alkyl group having 1 to 5 carbon atoms, and n represents a number from 2 to 6.

[0014] In general formula (1), R 1 is preferably a hydrogen atom, and R 2 is preferably an alkyl group having 2 to 4 carbon atoms, and n is preferably a number of 2 or 3.

[0015] Examples of the compound represented by general formula (1) include diethylene glycol monomethyl ether (methyl carbitol), diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monopropyl ether (propyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, and triethylene glycol monoethyl ether. From the viewpoint of making wet hair strands after washing more likely to take on a spiral shape, diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether are preferred.

[0016] Examples of alkylene glycols include ethylene glycol, 1,3-propanediol, 1,3-butanediol, and 3-methyl-1,3-butanediol (isoprene glycol). From the viewpoint of making wet hair strands more likely to become spiral after washing, 3-methyl-1,3-butanediol (isoprene glycol) is preferred.

[0017] Of these, from the viewpoint of making wet hair strands more likely to take on a spiral shape after washing and improving the manageability and uniformity of curls, one or more selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, and 3-methyl-1,3-butanediol (isoprene glycol) are preferred, one or more selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether are more preferred, one or more selected from diethylene glycol monoethyl ether (ethyl carbitol) and diethylene glycol monobutyl ether (butyl carbitol) are even more preferred, and diethylene glycol monoethyl ether (ethyl carbitol) is even more preferred.

[0018] Component (a) may be used alone or in combination of two or more. The content in the hair wash composition is 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 2.0% by mass or more, and even more preferably 3.0% by mass or more, from the viewpoint of facilitating the spiral curl of wet hair strands after washing and improving the manageability and uniformity of curls. Furthermore, from the viewpoint of facilitating the spiral curl of wet hair strands after washing and maintaining a viscosity suitable for a cleanser, the content is 18% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 10% by mass or less. The specific content range of component (a) in the hair wash composition is 0.1 to 18% by mass, preferably 0.5 to 15% by mass, more preferably 1.0 to 15% by mass, even more preferably 2.0 to 12% by mass, and even more preferably 3.0 to 10% by mass.

[0019] [Component (b): one or more selected from the group consisting of carboxylic acid-type anionic surfactants, sulfonic acid-type anionic surfactants, ether sulfate-type anionic surfactants, and amphoteric surfactants] Examples of carboxylic acid type anionic surfactants include N-acylamino acid salts, N-acyl-N-alkylamino acid salts, amide type N-acylamino acid salts, alkyl ether carboxylate salts, fatty acid salts, alkyl succinate or alkenyl succinate salts, etc. Examples of sulfonic acid type anionic surfactants include sulfosuccinate salts, isethionate salts, taurine salts, alkylbenzene sulfonate salts, α-olefin sulfonate salts, and alkanesulfonate salts, etc. Examples of ether sulfate type anionic surfactants include polyoxyethylene alkyl ether sulfates and alkyl ether sulfates, etc. Examples of amphoteric surfactants include imidazoline, carbobetaine, amidobetaine, sulfobetaine, hydroxysulfobetaine, amidosulfobetaine, etc. Component (b) may be used either alone or in combination of two or more thereof, and more preferably contains one or more anionic surfactants selected from carboxylic acid type anionic surfactants, sulfonic acid type anionic surfactants, and ether sulfate type anionic surfactants, and one or more amphoteric surfactants.

[0020] As the anionic surfactant, from the viewpoint of making wet hair strands after washing more likely to take on a spiral shape and improving the manageability and uniformity of curls, one or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether sulfates, and alkyl ether sulfates are preferred, one or more selected from alkyl ether carboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether sulfates, and alkyl ether sulfates are more preferred, one or more selected from α-olefin sulfonates and polyoxyethylene alkyl ether sulfates are even more preferred, and polyoxyethylene alkyl ether sulfates are even more preferred.

[0021] From the above viewpoints, the N-acylamino acid salt preferably has an acyl group that is a fatty acid residue having 8 to 14 carbon atoms, and the amino acid portion of the N-acylamino acid salt is preferably a neutral amino acid selected from glycine and alanine, or an acidic amino acid selected from glutamic acid and aspartic acid, more preferably an acidic amino acid, and even more preferably glutamic acid. Specifically, the N-acylamino acid salt is preferably one or more selected from N-lauroyl glutamate, N-myristoyl glutamate, N-cocoyl glutamate, and N-lauroyl aspartate, more preferably one or more selected from N-lauroyl glutamate, N-myristoyl glutamate, and N-cocoyl glutamate, and even more preferably contains N-cocoyl glutamate.

[0022] From the above viewpoint, the alkyl ether carboxylate is preferably an alkyl ether carboxylate having an alkyl group with 8 to 14 carbon atoms, and more preferably an alkyl ether carboxylate having an alkyl group with 8 to 14 carbon atoms and an average number of moles of ethylene oxide groups added of 1 to 5.

[0023] From the above viewpoint, the α-olefin sulfonate is preferably an α-olefin having an alkyl group with 10 to 18 carbon atoms, more preferably 12 to 16 carbon atoms, and even more preferably tetradecene sulfonate with 14 carbon atoms.

[0024] From the above viewpoints, the polyoxyethylene alkyl ether sulfates and alkyl ether sulfates are preferably polyoxyethylene alkyl ether sulfates and alkyl ether sulfates in which the alkyl group has 8 to 14 carbon atoms, and particularly preferably polyoxyethylene alkyl ether sulfates in which the alkyl group has 8 to 14 carbon atoms and the average number of moles of ethylene oxide groups added is 1 to 5.

[0025] Counter ions of the anionic groups of these anionic surfactants include alkali metal ions such as sodium ion and potassium ion; alkaline earth metal ions such as calcium ion and magnesium ion; ammonium ion; and alkanolammonium having 1 to 3 alkanol groups having 2 or 3 carbon atoms (for example, monoethanolammonium, diethanolammonium, triethanolammonium, triisopropanolammonium, etc.).

[0026] As the amphoteric surfactant, from the viewpoint of making wet hair strands after washing more likely to take on a spiral shape and improving the manageability and uniformity of curls, one or more types selected from carbobetaine and sulfobetaine are preferred, more specifically one or more types selected from fatty acid amidoalkylbetaine and alkylhydroxysulfobetaine are preferred, one or more types selected from fatty acid amidopropylbetaine having a fatty acid group with 8 to 14 carbon atoms and alkylhydroxysulfobetaine having an alkyl group with 8 to 14 carbon atoms are more preferred, and one or more types selected from lauric acid amidopropylbetaine and laurylhydroxysultaine are even more preferred.

[0027] The content of component (b) in the hair wash composition is 5% by mass or more, preferably 8% by mass or more, more preferably 12% by mass or more, and also preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less, from the viewpoint of making wet hair strands after washing more likely to become spiral and improving the manageability and uniformity of curls.

[0028] [Component (c): organic acid or its salt] From the viewpoint of facilitating the spiral formation of wet hair strands after washing and improving the manageability and uniformity of curls, the organic acid of component (c) is preferably an organic acid having 8 or less carbon atoms, more preferably a dicarboxylic acid, tricarboxylic acid, hydroxycarboxylic acid, or carboxylic acid having 8 or less carbon atoms, and even more preferably a hydroxycarboxylic acid. Specific examples of dicarboxylic acids include malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, phthalic acid, oxalic acid, malic acid, and tartaric acid; examples of tricarboxylic acids include citric acid; examples of hydroxycarboxylic acids include glycolic acid, lactic acid, hydroxyacrylic acid, oxybutyric acid, glyceric acid, malic acid, tartaric acid, and citric acid; and examples of carboxylic acids having an aldehyde group include glyoxylic acid. Among these, one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid are preferred, one or more hydroxycarboxylic acids selected from lactic acid, malic acid, and tartaric acid are more preferred, and one or more hydroxycarboxylic acids selected from lactic acid and malic acid are even more preferred. Examples of salts of these organic acids include salts with alkali metals, alkaline earth metals, ammonia, and organic compounds. These organic acids or salts thereof can be used alone or in combination of two or more.

[0029] The content of component (c) in the hair wash composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.5% by mass or more, from the viewpoints of improving the residual properties of component (a) on hair and making it easier for wet hair strands to curl in a spiral shape after washing, and is preferably 5% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less, from the viewpoints of suppressing squeaking during rinsing and making it easier for wet hair strands to curl in a spiral shape after washing.

[0030] The mass ratio (a) / (c) of component (a) to component (c) in the hair wash composition of the present invention is, from the viewpoint of making wet hair strands more likely to form a spiral shape after washing and improving the manageability and uniformity of curls, preferably 0.5 or more, more preferably 1.0 or more, even more preferably 3 or more, still more preferably 5 or more, and is preferably 100 or less, more preferably 50 or less, even more preferably 30 or less, and still more preferably 25 or less.

[0031] [Component (d): Nonionic surfactant] The hair wash composition of the present invention preferably further contains a nonionic surfactant as component (d). Examples of nonionic surfactants include alkyl glucosides, sorbitan fatty acid esters, glycerin fatty acid esters, polyglycerin fatty acid esters, propylene glycol fatty acid esters, polyethylene glycol fatty acid esters, sucrose fatty acid esters, polyoxyethylene fatty acid esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, alkyl glyceryl ethers, polyoxyethylene sorbitol fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyoxyethylene propylene glycol fatty acid esters, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil fatty acid esters, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterose ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesteryl ethers, polyoxyalkylene-modified organopolysiloxanes, and polyoxyalkylene-alkyl co-modified organopolysiloxanes. Among these, from the viewpoint of making wet hair strands after washing more easily spiral, one or more selected from alkyl glucoside, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether and alkyl glyceryl ether are preferred, one or more selected from alkyl glucoside, polyoxypropylene alkyl ether and alkyl glyceryl ether are more preferred, and alkyl glucoside is even more preferred. Component (d) can be used alone or in combination of two or more.

[0032] From the above viewpoint, the alkyl glucoside is preferably an alkyl glucoside having an alkyl group with 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, and even more preferably 8 to 12 carbon atoms. Specific examples include "Mydol 10" (decyl glucoside) and "AG-124" (lauryl glucoside), both manufactured by Kao Corporation.

[0033] From the above viewpoint, the polyoxyethylene alkyl ether is preferably a polyoxyethylene alkyl ether having an alkyl group with 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, and even more preferably 8 to 12 carbon atoms. Specific examples thereof include "Emulgen 103" (laureth-3), "Emulgen 116" (laureth-16), and "Emulgen 306P" (steareth-6), all manufactured by Kao Corporation.

[0034] From the above viewpoints, the polyoxypropylene alkyl ether is preferably a polyoxypropylene alkyl ether having an alkyl group with from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms, and even more preferably from 8 to 12 carbon atoms. A specific example thereof is "Kao Sofcare GP-1" (PPG-3 caprylyl ether) manufactured by Kao Corporation.

[0035] From the above viewpoints, the alkyl glyceryl ether preferably includes alkyl glyceryl ethers having an alkyl group with 8 to 22 carbon atoms, more preferably 8 to 18 carbon atoms, and even more preferably 8 to 12 carbon atoms, and a specific example thereof is "Penetol GE-ID" (isodecyl glyceryl ether) manufactured by Kao Corporation.

[0036] The content of component (d) in the hair wash composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1% by mass or more, from the viewpoints of improving the residual properties of component (a) on hair and making it easier for wet hair strands to curl in a spiral shape after washing, and is preferably 10% by mass or less, more preferably 8% by mass or less, and even more preferably 5% by mass or less, from the viewpoints of improving a natural feel in use and storage stability and making it easier for wet hair strands to curl in a spiral shape after washing.

[0037] [Component (e): Cationic Polymer] The hair wash composition of the present invention preferably further contains a cationic polymer as component (e) in order to impart a smooth feel to the hair during washing and rinsing. Specific examples of cationic polymers include cationized cellulose, cationic starch, cationized guar gum, diallyl quaternary ammonium salt / acrylamide copolymer, vinylimidazolium trichloride / vinylpyrrolidone copolymer, hydroxyethyl cellulose / dimethyldiallylammonium chloride copolymer, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate copolymer, polyvinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymer, vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymer, alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymer, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymer (Sandoz Corporation, USA, Caltaretin), and cationic polymers described in JP-A Nos. 11-71435, 53-139734, and 60-36407.

[0038] Further, for example, Marquat 550 (Lubrizol Corporation, copolymer of acrylamide and diallyldimethylammonium salt; INCI name Polyquaternium-7), Rubiquat FC370 (BASF, copolymer of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salt; INCI name Polyquaternium-16), Gafquat 755N (Ashland Corporation, copolymer of 1-vinyl-2-pyrrolidone and dimethylaminoethyl methacrylate; INCI name Polyquaternium-11), Ucare Polymer JR and LR series (Amerchol Corporation, salt of reaction product of trimethylammonium-substituted epoxide and hydroxyethyl cellulose; INCI name Polyquaternium-10), Poise C Commercially available products that can be used include cellulose acetate-60H, Poise C-80M, and Poise C-150L (Kao Corporation, salt of the reaction product of trimethylammonium-substituted epoxide and hydroxyethyl cellulose; INCI name: Polyquaternium-10), Caticello M-80 and Caticello (Kao Corporation, cationized hydroxyethyl cellulose; INCI name: Polyquaternium-10), Softcare KG-301W and Softcare KG-101W-E (Kao Corporation, N,N-dimethylaminoethyl diethyl methacrylate sulfate / N,N-dimethylacrylamide / polyethylene glycol dimethacrylate copolymer; INCI name: Polyquaternium-52), and the Jaguar series (Solvay, guar hydroxypropyltriammonium chloride).

[0039] Among these, from the viewpoint of facilitating the formation of a spiral shape in wet hair strands after washing and improving the manageability and uniformity of curls, preferred are cationized polysaccharides such as cationized cellulose, cationized starch, cationized guar gum, cationized tara gum, cationized fenugreek gum, and cationized locust bean gum, more preferred are one or more selected from cationized cellulose and cationized guar gum, and even more preferred is cationized cellulose. The degree of cationic substitution of the cationized cellulose is preferably 0.01 to 1, and the molecular weight is preferably 100,000 to 8,000,000.

[0040] Component (e) may be used alone or in combination of two or more types. From the viewpoint of making wet hair strands after washing more likely to form a spiral shape and improving the manageability and uniformity of curls, the content of component (e) in the hair wash composition is preferably at least 0.01% by mass, more preferably at least 0.1% by mass, even more preferably at least 0.2% by mass, and is preferably at most 5% by mass, more preferably at most 3% by mass, even more preferably at most 1% by mass.

[0041] [Other optional ingredients] The hair wash composition of the present invention may further contain other ingredients commonly used in hair washes depending on the purpose, such as ester oils such as isopropyl palmitate, isopropyl myristate, octyldodecyl myristate, hexyl laurate, cetyl lactate, propylene glycol monostearate, oleyl oleate, hexadecyl 2-ethylhexanoate, isononyl isononanoate, and tridecyl isononanoate; waxes such as beeswax, spermaceti, lanolin, and carnauba wax; solvents such as benzyl alcohol, phenoxyethanol, 2-benzyloxyethanol, and glycerin; silicones such as dimethylpolysiloxane and amino-modified silicone; anti-dandruff agents such as zinc pyrithione and benzalkonium chloride; and vitamins. agents; bactericides; anti-inflammatory agents; preservatives; chelating agents; moisturizing agents such as panthenol; coloring agents such as dyes and pigments; extracts such as polar solvent extract of eucalyptus, protein or hydrolysate thereof obtained from nacreous shells or pearls, protein or hydrolysate thereof obtained from silk, protein-containing extracts obtained from legume seeds, ginseng extract, rice germ extract, fucus extract, camellia extract, aloe extract, shell ginger leaf extract, and chlorella extract; pearl powder such as titanium dioxide; fragrances; pigments; UV absorbers; antioxidants; and other ingredients listed in the Encyclopedia of Shampoo Ingredients (MICELLE PRESS).

[0042] The hair wash composition of the present invention uses water as a medium, but can also contain a lower alcohol such as ethanol or 1,3-butylene glycol as a medium other than water.

[0043] The hair wash composition of the present invention may further contain an anionic or amphoteric film-forming polymer from the viewpoints of imparting a smooth feel during hair washing and rinsing or improving hair settability. However, since anionic or amphoteric film-forming polymers may impair the formation of a spiral shape without inversions or reduce curl reproducibility, the content of such polymers in the hair wash composition is preferably 5% by mass or less, more preferably 1% by mass or less, even more preferably 0.5% by mass or less, still more preferably 0.1% by mass or less, and even more preferably the hair wash composition is substantially free of anionic or amphoteric film-forming polymers. In the present invention, "substantially free" means that the content in the composition is less than 0.01% by mass, preferably 0% by mass. In the present invention, the film-forming polymer means a polymer that can form a film on keratinous materials when dried.

[0044] Examples of film-forming polymers are listed below. <Anionic film-forming polymer> Anionic film-forming polymers containing crotonic acid, maleic acid, maleic acid monoester, or itaconic acid as building blocks: The copolymer is not particularly limited as long as it contains crotonic acid, maleic acid, maleic acid monoester, or itaconic acid as a structural unit, but examples thereof include copolymers with one or more of vinyl ethers, vinyl esters, and vinyl alcohols. Specific examples include methyl vinyl ether / alkyl maleate copolymers (e.g., Gantrez ES-225, ES-425, and SP-215 manufactured by ISP), vinyl acetate / crotonic acid copolymers (e.g., Resin 28-1310 manufactured by National Starch), vinyl acetate / crotonic acid / vinyl neodecanoate copolymers (e.g., Resin 28-2930 manufactured by National Starch), vinyl acetate / crotonic acid / vinyl propionate copolymers (e.g., Lubyset CAP manufactured by BASF), and vinyl alcohol / itaconic acid copolymers (e.g., KM-118 manufactured by Kuraray).

[0045] Anionic film-forming polymers containing (meth)acrylic acid as building blocks: Examples of suitable vinyl polymers include vinyl polymers containing (meth)acrylic acid as a structural unit. Specific examples include acrylic acid / ethyl acrylate / Nt-butylacrylamide copolymers (e.g., Ultrahold 8 and Ultrahold Strong manufactured by BASF), octylacrylamide / acrylic acid copolymers (e.g., Amphomer V-42 manufactured by National Starch), acrylate / methacrylate / acrylic acid / methacrylic acid copolymers (e.g., Amahold DR25 manufactured by Union Carbide), acrylates / diacetone acrylamide copolymers (e.g., Plassize L9540B manufactured by Goo Chemical Industry Co., Ltd. (the polymer neutralized with 2-amino-2-methyl-1-propyl alcohol)), and acrylates / C1-18 alkyl acrylates / C1-8 alkyl acrylamide copolymers (e.g., Plassize L9909B manufactured by Goo Chemical Industry Co., Ltd. (the polymer neutralized with 2-amino-2-methyl-1-propyl alcohol)).

[0046] Natural anionic film-forming polymers containing either carboxyl or sulfate groups: There are no particular limitations on the natural polysaccharides as long as they have either a carboxy group or a sulfate group, and examples include carrageenan (such as Soagina LX22 and ML210 manufactured by Mitsubishi Rayon Co., Ltd.) and xanthan gum (such as Echo Gum T manufactured by Dainippon Pharmaceutical Co., Ltd.).

[0047] Polyesters containing either carboxyl or sulfonic acid groups: Although not particularly limited, examples thereof include water-dispersible polyesters (such as AQ38S and AQ55S manufactured by Eastman Kodak Company).

[0048] <Amphoteric film-forming polymer> Examples of amphoteric polymers include, but are not limited to, vinyl polymers. Here, the amphoteric polymer includes both copolymers containing one or more anionic monomers and one or more cationic monomers as constituent units, and copolymers containing one or more so-called betaine monomers having both anionic and cationic moieties in the monomer structure as constituent units. Specific examples include dimethyldiallylammonium / acrylamide / acrylic acid copolymer (such as Calgon's Merquat 3331), N-methacryloyloxyethyl-N,N-dimethylammonium-α-N-methylcarboxybetaine / methacrylic acid alkyl ester copolymer (such as Mitsubishi Chemical's Yukaformer M-75 and SM), and octylacrylamide / acrylate / butylaminoethyl methacrylate copolymer (such as National Starch's Amphormer 28-4910).

[0049] The hair wash composition of the present invention may further contain a compound with a reducing effect. However, among the reducing compounds, compounds having a thiol group or an aldehyde group, sulfites, and sulfinic acids are preferably substantially free of these compounds, as they may accelerate hair damage, impair the formation of a non-reversible spiral shape, and reduce curl reproducibility. Furthermore, since the above-mentioned problems may also occur depending on the content of reducing compounds having an ascorbyl group, their content in the hair wash composition is preferably less than 1% by mass, more preferably less than 0.5% by mass, even more preferably less than 0.1% by mass, and even more preferably less than 0.05% by mass.

[0050] Specific examples of compounds having a thiol group and a reducing effect include thioglycolic acid, thiolactic acid, cysteine, cysteamine, homocysteine, glutathione, thioglycerol, thiomalic acid, 2-mercaptopropionic acid, 3-mercaptopropionic acid, thiodiglycol, 2-mercaptoethanol, dithiothreitol, N-acetylcysteine, esters and amides of thioglycolic acid or thiolactic acid, and the like.

[0051] Specific examples of compounds having an aldehyde group and a reducing effect include formaldehyde, 1,3,5-trioxane, paraformaldehyde, formalin, etc. Similarly, methylene glycol is a compound that exists in equilibrium in an aqueous formaldehyde solution and is essentially synonymous with formalin, and is therefore included in this definition.

[0052] Examples of sulfites include ammonium sulfite, ammonium hydrogen sulfite, sodium sulfite, sodium hydrogen sulfite, potassium sulfite, and potassium hydrogen sulfite.

[0053] Examples of sulfinic acids include sulfinic acid salts and benzenesulfinic acid salts.

[0054] Examples of compounds having an ascorbyl group and a reducing effect include ascorbic acid, erythorbic acid, salts or esters thereof, etc. Specific examples include ascorbic acid, sodium ascorbate, potassium ascorbate, calcium ascorbate, ammonium ascorbate, monoethanolamine ascorbate, diethanolamine ascorbate, erythorbic acid, sodium erythorbate, disodium ascorbate sulfate, magnesium ascorbate phosphate, ascorbyl palmitate, ascorbyl stearate, ascorbyl dipalmitate, ascorbyl tetra-2-hexyldecanoate, ascorbyl myristate, and lauric acid. Examples of the ascorbyl phosphate include ascorbyl phosphate, ascorbyl acetate, ascorbyl propionate, ascorbyl tartrate, ascorbyl citrate, ascorbyl succinate, ascorbyl benzoate, potassium (ascorbyl / tocopheryl) phosphate, ethyl ascorbyl, allantoin ascorbate, chitosan ascorbate, methylsilanol ascorbate, tetradecylhexyl ascorbyl, aminopropyl ascorbyl phosphate, ascorbic acid polypeptide, ascorbyl glucoside, and ascorbyl methylsilanol pectinate.

[0055] [pH] From the viewpoint of storage stability of the preparation, the pH of the hair wash composition of the present invention is preferably 3 or more, more preferably 3.5 or more, even more preferably 4 or more, and still more preferably 5 or more, and from the viewpoint of reducing damage to the hair and scalp, it is preferably 8 or less, more preferably 7.5 or less, even more preferably 7 or less, and still more preferably 6 or less. In the present invention, the pH of the hair wash composition refers to the value at 25°C when diluted 20 times by mass with water, and specifically refers to the value measured by the method described in the examples.

[0056] The hair wash composition of the present invention may be in any form such as a liquid, emulsion, cream, or foam.

[0057] [Method of using the hair wash composition] The hair wash composition of the present invention is applied to hair with wavy curls, preferably hair with wavy curls that has been thoroughly moistened with water, and then blended into the entire hair, lathered well, and rinsed off before use. The hair is then optionally dried, for example by towel drying, and preferably scrunched on wet hair with a mass ratio of water to hair (water / hair) of 0.05 to 1. Here, in the present invention, the scrunching operation is preferably one or more operations selected from the following 1) to 3). From the viewpoint of facilitating the formation of a spiral shape in a wet hair bundle after washing and improving the manageability and uniformity of curls, it is preferable to perform one or more operations selected from 1) and 3), and more preferably to perform operation 3). During the scrunching operation, the hair bundle may be placed on a towel spread in the palm of the hand. 1) Grasping or kneading hair 2) Twist your hair 3) Place the hair in the palm of your hand and lift it up as if you are squeezing it, then release it.

[0058] Regarding the wetness of the hair when performing the scrunching operation, from the viewpoint of making the wet hair strands after washing more likely to form a spiral shape and improving the manageability and uniformity of the curls, the mass ratio of water to hair (water / hair) is 0.05 or more and 1 or less, preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.3 or more, still more preferably 0.5 or more, and also preferably 0.9 or less, more preferably 0.8 or less.

[0059] The number of times the scrunching operation is repeated is preferably at least one time, more preferably at least three times, and even more preferably at least five times per handful of hair bundle, from the viewpoint of making the wet hair bundle after washing more likely to become spiral and improving the manageability and uniformity of the curls; and from the viewpoint of reducing the effort, it is preferably no more than 50 times, more preferably no more than 30 times, and even more preferably no more than 20 times.

[0060] After the scrunching treatment, the hair may be optionally subjected to a drying step and a styling step using a hair conditioner or the like.

[0061] By washing hair using the hair wash composition of the present invention as described above and then performing a scrunching operation, the wet hair strands after washing can be made to easily assume a spiral shape, and beautiful, uniform, three-dimensional, and manageable wavy curls can be formed.

[0062] In the present invention, the spiral structure of a wet hair bundle after washing can be evaluated by the spiral ratio represented by the following formula.

[0063] Spiral rate (%) = (number of forward rotation points / total number of curl points) x 100 (The "number of curls in the forward direction" is the number of times a curl is curled in the same direction as it was half a turn ago when you fold the hair from the tip and observe the direction of the curl from the root of the tress.)

[0064] With respect to the above-described embodiment, further preferred aspects of the present invention will be disclosed below. <1> A hair wash composition comprising the following components (a), (b) and (c): (a) 0.1% by mass or more and 18% by mass or less of one or more compounds selected from polyalkylene glycol ethers and alkylene glycols (b) 5% by mass or more of one or more surfactants selected from carboxylic acid type anionic surfactants, sulfonic acid type anionic surfactants, ether sulfate type anionic surfactants, and amphoteric surfactants (c) Organic acids or their salts

[0065] <2> The polyalkylene glycol ether in component (a) is preferably a compound represented by the following general formula (1): <1> The hair wash composition according to claim 1.

[0066] [ka]

[0067] [In the formula, R 1 represents a hydrogen atom or a methyl group, preferably a hydrogen atom; R2 represents an alkyl group having 1 to 5 carbon atoms, preferably 2 to 4 carbon atoms, and n represents a number of 2 to 6, preferably 2 to 3.

[0068] <3> The polyalkylene glycol ether in component (a) is preferably one or more selected from diethylene glycol monomethyl ether (methyl carbitol), diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monopropyl ether (propyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, and triethylene glycol monoethyl ether, more preferably one or more selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether. <1> or <2> The hair wash composition according to claim 1.

[0069] <4> The alkylene glycol in component (a) is preferably one or more selected from ethylene glycol, 1,3-propanediol, 1,3-butanediol, and 3-methyl-1,3-butanediol (isoprene glycol), more preferably 3-methyl-1,3-butanediol (isoprene glycol). <1> ~ <3> The hair wash composition according to any one of the above.

[0070] <5> Component (a) preferably comprises one or more selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, and 3-methyl-1,3-butanediol (isoprene glycol), more preferably one or more selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether, even more preferably one or more selected from diethylene glycol monoethyl ether (ethyl carbitol) and diethylene glycol monobutyl ether (butyl carbitol), and even more preferably diethylene glycol monoethyl ether (ethyl carbitol). <1> ~ <4> The hair wash composition according to any one of the above.

[0071] <6> The content of component (a) is 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1.0% by mass or more, even more preferably 2.0% by mass or more, even more preferably 3.0% by mass or more, and is 18% by mass or less, preferably 15% by mass or less, more preferably 12% by mass or less, even more preferably 10% by mass or less. <1> ~ <5> The hair wash composition according to any one of the above.

[0072] <7> Component (b) is preferably one or more selected from N-acylamino acid salts, N-acyl-N-alkylamino acid salts, amide-type N-acylamino acid salts, alkyl ether carboxylate salts, fatty acid salts, alkyl succinate or alkenyl succinate salts, sulfosuccinate-type anionic surfactants, isethionate-type anionic surfactants, taurine salt-type anionic surfactants, alkylbenzenesulfonate-type anionic surfactants, α-olefinsulfonate-type anionic surfactants, alkanesulfonate-type anionic surfactants, polyoxyalkyl ether sulfates, alkyl ether sulfates, imidazolines, carbobetaines, amidobetaines, sulfobetaines, hydroxysulfobetaines, and amidosulfobetaines; <1> ~ <6> The hair wash composition according to any one of the above.

[0073] <8> The anionic surfactant of component (b) is preferably one or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether sulfates, and alkyl ether sulfates, more preferably one or more selected from alkyl ether carboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether sulfates, and alkyl ether sulfates, even more preferably one or more selected from α-olefin sulfonates and polyoxyethylene alkyl ether sulfates, and even more preferably polyoxyethylene alkyl ether sulfates; <1> ~ <7> The hair wash composition according to any one of the above.

[0074] <9> The amphoteric surfactant of component (b) is preferably one or more selected from carbobetaine and sulfobetaine, more preferably one or more selected from fatty acid amidoalkylbetaine and alkylhydroxysulfobetaine, even more preferably one or more selected from fatty acid amidopropylbetaine having a fatty acid group with 8 to 14 carbon atoms and alkylhydroxysulfobetaine having an alkyl group with 8 to 14 carbon atoms, and even more preferably one or more selected from lauric acid amidopropylbetaine and laurylhydroxysultaine. <1> ~ <8> The hair wash composition according to any one of the above.

[0075] <10> The component (b) preferably contains one or more anionic surfactants selected from carboxylic acid type anionic surfactants, sulfonic acid type anionic surfactants, and ether sulfate type anionic surfactants, and one or more amphoteric surfactants. <1> ~ <9> The hair wash composition according to any one of the above.

[0076] <11> The content of component (b) is 5% by mass or more, preferably 8% by mass or more, more preferably 12% by mass or more, and is preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less. <1> ~ <10> The hair wash composition according to any one of the above.

[0077] <12> Component (c) is preferably an organic acid having 8 or less carbon atoms or a salt thereof, more preferably a dicarboxylic acid, tricarboxylic acid, hydroxycarboxylic acid, or carboxylic acid having an aldehyde group having 8 or less carbon atoms or a salt thereof, and even more preferably a hydroxycarboxylic acid having 8 or less carbon atoms or a salt thereof. <1> ~ <11> The hair wash composition according to any one of the above.

[0078] <13> Component (c) is preferably one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid, or salts thereof, more preferably one or more hydroxycarboxylic acids selected from lactic acid, malic acid, and tartaric acid, or salts thereof, and even more preferably one or more hydroxycarboxylic acids selected from lactic acid and malic acid, or salts thereof. <1> ~ <12> The hair wash composition according to any one of the above.

[0079] <14> The content of component (c) is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.5% by mass or more, and is preferably 5% by mass or less, more preferably 2% by mass or less, even more preferably 1% by mass or less. <1> ~ <13> The hair wash composition according to any one of the above.

[0080] <15> The mass ratio (a) / (c) of component (a) to component (c) is preferably 0.5 or more, more preferably 1.0 or more, even more preferably 3 or more, even more preferably 5 or more, and is preferably 100 or less, more preferably 50 or less, even more preferably 30 or less, even more preferably 25 or less. <1> ~ <14> The hair wash composition according to any one of the above.

[0081] <16> Further, the composition contains one or more nonionic surfactants as component (d). <1> ~ <15> The hair wash composition according to any one of the above.

[0082] <17> Component (d) is preferably alkyl glucoside, sorbitan fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol fatty acid ester, sucrose fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, alkyl glyceryl ether, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene glycerin fatty acid ester, polyoxyethylene propylene glycol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene hydrogenated castor oil at least one selected from fatty acid esters, polyoxyethylene phytostanol ethers, polyoxyethylene phytosterol ethers, polyoxyethylene cholestanol ethers, polyoxyethylene cholesteryl ethers, polyoxyalkylene-modified organopolysiloxanes, and polyoxyalkylene-alkyl co-modified organopolysiloxanes, more preferably at least one selected from alkyl glucosides, polyoxyethylene alkyl ethers, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, even more preferably at least one selected from alkyl glucosides, polyoxypropylene alkyl ethers, and alkyl glyceryl ethers, and even more preferably alkyl glucosides; <16> The hair wash composition according to claim 1.

[0083] <18> The content of component (d) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, even more preferably 1% by mass or more, and is preferably 10% by mass or less, more preferably 8% by mass or less, even more preferably 5% by mass or less. <16> or <17> The hair wash composition according to claim 1.

[0084] <19> Preferably, it further contains a cationic polymer as component (e). <1> ~ <18> The hair wash composition according to any one of the above.

[0085] <20> The component (e) preferably comprises one or more selected from cationized cellulose, cationized starch, cationized guar gum, cationized tara gum, cationized fenugreek gum, and cationized locust bean gum, more preferably one or more selected from cationized cellulose and cationized guar gum, and even more preferably cationized cellulose. <19> The hair wash composition according to claim 1.

[0086] <21> The content of component (e) is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and is preferably 5% by mass or less, more preferably 3% by mass or less, even more preferably 1% by mass or less. <19> or <20> The hair wash composition according to claim 1.

[0087] <22> The content of anionic or amphoteric film-forming polymer is preferably 5% by mass or less, more preferably 1% by mass or less, even more preferably 0.5% by mass or less, still more preferably 0.1% by mass or less, and even more preferably the composition is substantially free of anionic or amphoteric film-forming polymer. <1> ~ <21> The hair wash composition according to any one of the above.

[0088] <23> It is substantially free of compounds with a reducing action selected from compounds having a thiol group or an aldehyde group, sulfites, and sulfinic acids. <1> ~ <22> The hair wash composition according to any one of the above.

[0089] <24> The content of the compound having an ascorbyl group and having a reducing action is preferably less than 1% by mass, more preferably less than 0.5% by mass, even more preferably less than 0.1% by mass, and even more preferably less than 0.05% by mass. <1> ~ <23> The hair wash composition according to any one of the above.

[0090] <25> The pH at 25°C when diluted 20 times by mass with water is preferably 3 or more, more preferably 3.5 or more, even more preferably 4 or more, even more preferably 5 or more, and is preferably 8 or less, more preferably 7.5 or less, even more preferably 7 or less, even more preferably 6 or less. <1> ~ <24> The hair wash composition according to any one of the above.

[0091] <26> <1> ~ <25> The hair wash composition according to any one of the above items 1 to 3 is applied to wavy curled hair that has been thoroughly moistened with water, the composition is spread over the entire hair, and after lathering well, the composition is rinsed off, and then a scrunching operation is performed on the hair while the hair is still wet.

[0092] <27> The scrunching operation is preferably one or more operations selected from the following 1) to 3): <26> The hair treatment method according to claim 1. 1) Grasping or kneading hair 2) Twist your hair 3) Place the hair in the palm of your hand and lift it up as if you are squeezing it, then release it.

[0093] <28> A hair wash composition comprising the following components (a), (b) and (c): (a) 0.1% by mass or more and 18% by mass or less of one or more compounds selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), triethylene glycol monomethyl ether, and 3-methyl-1,3-butanediol (isoprene glycol) (b) 5% by mass or more and 30% by mass or less of one or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, polyoxyethylene alkyl ether sulfates, alkyl ether sulfates, fatty acid amide alkyl betaines, and alkylhydroxy sulfobetaines (c) 0.1% by mass or more and 5% by mass or less of one or more hydroxycarboxylic acids or salts thereof selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid

[0094] <29> A hair wash composition comprising the following components (a), (b) and (c): (a) 2.0% by mass or more and 12% by mass or less of one or more compounds selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether (b) One or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, and polyoxyethylene alkyl ether sulfates, and alkylhydroxysulfobetaine, 8% by mass or more and 25% by mass or less (c) 0.2% by mass or more and 2% by mass or less of one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid, or salts thereof

[0095] <30> A hair wash composition comprising the following components (a), (b), (c) and (d): (a) 2.0% by mass or more and 12% by mass or less of one or more compounds selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether (b) One or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, and polyoxyethylene alkyl ether sulfates, and alkylhydroxysulfobetaine, 8% by mass or more and 25% by mass or less (c) 0.2% by mass or more and 2% by mass or less of one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid, or salts thereof (d) 0.5% by mass or more and 8% by mass or less of one or more selected from alkyl glucoside, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, and alkyl glyceryl ether

[0096] <31> A hair wash composition comprising the following components (a), (b), (c) and (e): (a) 2.0% by mass or more and 12% by mass or less of one or more compounds selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether (b) One or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, and polyoxyethylene alkyl ether sulfates, and alkylhydroxysulfobetaine, 8% by mass or more and 25% by mass or less (c) 0.2% by mass or more and 2% by mass or less of one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid, or salts thereof (e) one or more selected from cationized cellulose and cationized guar gum, 0.1% by mass or more and 3% by mass or less

[0097] <32> A hair wash composition comprising the following components (a), (b), (c), (d) and (e): (a) 2.0% by mass or more and 12% by mass or less of one or more compounds selected from diethylene glycol monoethyl ether (ethyl carbitol), diethylene glycol monobutyl ether (butyl carbitol), and triethylene glycol monomethyl ether (b) One or more selected from N-acylamino acid salts, alkyl ether carboxylates, α-olefin sulfonates, and polyoxyethylene alkyl ether sulfates, and alkylhydroxysulfobetaine, 8% by mass or more and 25% by mass or less (c) 0.2% by mass or more and 2% by mass or less of one or more hydroxycarboxylic acids selected from glycolic acid, lactic acid, malic acid, tartaric acid, and citric acid, or salts thereof (d) 0.5% by mass or more and 8% by mass or less of one or more selected from alkyl glucoside, polyoxyethylene alkyl ether, polyoxypropylene alkyl ether, and alkyl glyceryl ether (e) one or more selected from cationized cellulose and cationized guar gum, 0.1% by mass or more and 3% by mass or less

[0098] <33> The mass ratio (a) / (c) of the component (a) to the component (c) is 0.5 or more and 100 or less. <28> ~ <32> The hair wash composition according to any one of the above.

[0099] <34> The mass ratio (a) / (c) of the component (a) to the component (c) is 1.0 or more and 50 or less. <28> ~ <32> The hair wash composition according to any one of the above.

[0100] <35> The mass ratio (a) / (c) of the component (a) to the component (c) is 3 or more and 30 or less; <28> ~ <32> The hair wash composition according to any one of the above.

[0101] <36> The mass ratio (a) / (c) of the component (a) to the component (c) is 5 or more and 25 or less; <28> ~ <32> The hair wash composition according to any one of the above. [Example]

[0102] Examples 1 to 18, Comparative Examples 1 to 6 The shampoos shown in Tables 3 to 5 were prepared and evaluated as follows. The plain shampoos and conditioners used for hair treatment were as follows.

[0103] [Table 1]

[0104] [Table 2]

[0105] (Evaluation trace) 0.25 g of Caucasian curly hair (purchased from Kerling International Haarfabrik, 28 cm long when stretched, with 4-5 curls from root to tip) was used as one tress, and the following treatment was carried out.

[0106] Untreated (control): The plain shampoo was applied to the hair bundle (0.1g for 0.25g of tress; bath ratio 1:0.4), lathered for 1 minute, and then rinsed with running water for 30 seconds. After rinsing, excess water was removed from the hair, and the conditioner was applied (0.1g for 0.25g of tress; bath ratio 1:0.4), left to soak for 1 minute, and then rinsed with running water for 30 seconds.

[0107] Examples and Comparative Examples: The shampoo described in each Example and Comparative Example was applied to a hair bundle (0.1 g for 0.25 g of tress; bath ratio 1:0.4), lathered for 1 minute, and then rinsed with running water for 30 seconds. After rinsing, excess water was removed from the hair, and the conditioner was applied (0.1 g for 0.25 g of tress; bath ratio 1:0.4), left for 1 minute, and then rinsed with running water for 30 seconds.

[0108] (Evaluation Procedure) The curly hair tresses after hair treatment were evaluated as follows.

[0109] ·Spiral rate (%) After rinsing, the hair bundle was left to drain naturally without moving for 10 seconds, and then scrunched 10 times on a towel. As shown in the example in Figure 1, the hair bundle is placed from the end in a folded manner, and the curls are counted for each half-turn of the curl. When the direction of the curl is observed from the root of the tress, a beautiful curl is created when a curl is curled in the same direction as the previous half-turn (forward curl point). The more forward curl points there are, the more uniform the curls are. According to the following formula, the ratio of the total number of forward curl points to the total number of curl points on the tress is the spiral ratio. The average spiral ratio of five tresses was used for the evaluation. Spiral rate (%) = (number of forward rotation points / total number of curl points) x 100 (The "number of curls in the forward direction" is the number of times a curl is curled in the same direction as it was half a turn ago when you fold the hair from the tip and observe the direction of the curl from the root of the tress.) For example, in the example on the left side of Figure 1, all four curls are counted per half rotation, so the spiral rate is (4 / 4) x 100 = 100%, while in the example on the right side of Figure 1, three of the four curls are forward rotation and one is reverse rotation, so the spiral rate is (3 / 4) x 100 = 75%. The higher the spiral rate, the more uniform the product is evaluated to be.

[0110] Curl management After rinsing, the hair was towel-dried and then dried for 3 minutes using a diffuser. After drying, one end of the hair bundle was fixed and hung, and a photograph was taken from the front. One expert evaluator judged the cohesion of the hair bundle on a 5-point scale. Comparative Example 1 was given a score of 5 for a wide bundle width (dispersed), and Example 1 was given a score of 1 for a narrow bundle width (tidy), and the difference in bundle width between score 1 and score 5 was divided into 5 equal parts and evaluated as each score.

[0111] · Uniformity of curls After rinsing, the hair was towel-dried and then dried for 3 minutes using a diffuser. After drying, one end of the hair bundle was fixed and hung, and a photograph was taken from the front. The curl radius of the bundle was measured from the photograph, and its standard deviation was calculated using the following formula. The smaller the standard deviation, the more uniform the curl is evaluated to be.

[0112]

number

[0113] pH measurement The shampoos described in each of the Examples and Comparative Examples were diluted 20 times by mass with water, thoroughly stirred, and then measured at 25°C using a pH meter (HM-30R, manufactured by DKK-TOA Corporation).

[0114] [Table 3]

[0115] [Table 4]

[0116] [Table 5]

[0117] The pH of the shampoos used in the Examples and Comparative Examples when diluted 20 times by mass with water at 25°C is in the range of 3.5 to 7.5. Tables 3 to 5 show that the hair wash composition of this example makes it easier for wet hair to take on a spiral shape after washing, allowing the formation of beautiful, uniform, three-dimensional, and manageable wavy curls.

[0118] Prescription examples 1-3 Table 6 shows formulation examples of hair wash compositions of the present invention.

[0119] [Table 6]

Claims

1. A hair wash composition comprising the following components (a), (b) and (c): (a) 0.1% by mass or more and 18% by mass or less of one or more compounds selected from polyalkylene glycol ethers and alkylene glycols (b) 5% by mass or more of one or more surfactants selected from the group consisting of carboxylic acid type anionic surfactants, sulfonic acid type anionic surfactants, ether sulfate type anionic surfactants, and amphoteric surfactants (c) Organic acids or their salts

2. 2. The hair wash composition according to claim 1, wherein the content of component (a) is from 0.5% by mass to 15% by mass.

3. 3. The hair wash composition according to claim 1, wherein the content of component (b) is from 8% by mass to 30% by mass.

4. 3. The hair wash composition according to claim 1, wherein the component (c) is a hydroxycarboxylic acid.

5. 3. The hair wash composition according to claim 1, wherein component (b) comprises one or more anionic surfactants selected from the group consisting of carboxylic acid-type anionic surfactants, sulfonic acid-type anionic surfactants, and ether sulfate-type anionic surfactants, and one or more amphoteric surfactants.

6. The hair wash composition according to claim 1 or 2, further comprising one or more nonionic surfactants as component (d).

7. 3. The hair wash composition according to claim 1, wherein the mass ratio (a) / (c) of component (a) to component (c) is 0.5 or more and 100 or less.