JP2024005654A - hair composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the use experience of a hair composition during a scalp massage with the hair composition applied on the hair, and also effectively promote the absorption of zinc element into the hair.

SOLUTION: A hair composition contains PEG-60 hydrogenated castor oil of 0.4 mass% or more and further contains zinc gluconate and xanthan gum.

SELECTED DRAWING: None

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to compositions for hair.

Patent Document 1 describes a hair growth composition containing Scutellariae extract, a zinc compound, and a diester of cyclohexanedicarboxylic acid and polyoxyethylene monoalkyl ether.

Japanese Patent Application Publication No. 2018-104319

The hair growth composition of Patent Document 1 has the effect of imparting firmness and body (hereinafter also simply referred to as "firmness") to hair by containing a zinc compound.
By the way, when using a hair composition such as a hair growth composition, the scalp may be massaged with the hair composition attached to the hair. By massaging the scalp, the hair composition becomes more familiar with the hair, and blood flow in the scalp is improved. Attempts have been made to synergistically improve the action of hair compositions by improving blood flow in the scalp. Therefore, there is a need for hair compositions to be able to massage the scalp smoothly and without discomfort when they are applied to the hair, that is, to improve the feeling of use of the hair compositions. . Further, hair compositions are also required to further promote the penetration of zinc element into the hair.

A hair composition for solving the above problems contains 0.4% by mass or more of PEG-60 hydrogenated castor oil, and further contains zinc gluconate and xanthan gum.

The hair composition preferably contains bisethoxyglycol cyclohexanedicarboxylate.
The hair composition preferably does not substantially contain hydroxyethylcellulose.

According to the hair composition of the present invention, the feeling of use when massaging the scalp while it is attached to the hair is improved, and the penetration of the zinc element into the hair can be suitably promoted.

Embodiments of the hair composition of the present invention will be described.
The hair composition contains 0.4% by mass or more of PEG-60 hydrogenated castor oil, and further contains zinc gluconate and xanthan gum.

When the hair composition contains the above-mentioned components, the feeling of use when massaging the scalp while the hair composition is applied to the hair is improved. Further, the penetration of zinc element into the hair can be further promoted.

Each component constituting the hair composition will be explained below.
<PEG-60 hydrogenated castor oil>
PEG-60 hydrogenated castor oil is a hydrophilic nonionic surfactant obtained by addition polymerizing about 60 moles of ethylene oxide to fatty acids and triglycerides obtained from hydrogenated castor oil. The PEG-60 hydrogenated castor oil is not particularly limited, and any known PEG-60 hydrogenated castor oil can be used.

The content of PEG-60 hydrogenated castor oil is 0.4% by mass or more based on the total mass of the hair composition. The lower limit of the content of PEG-60 hydrogenated castor oil is preferably 0.5% by mass. The upper limit of the content of PEG-60 hydrogenated castor oil is not particularly limited, but is preferably 5% by mass, more preferably 2% by mass. In addition, ranges in which the above upper and lower limits are arbitrarily combined are also envisioned. The same goes for the rest.

<Zinc gluconate>
Zinc gluconate is used in hair compositions as a zinc compound that imparts firmness to hair. Zinc gluconate is not particularly limited, and any known zinc gluconate can be used.

The content of zinc gluconate based on the total mass of the hair composition is not particularly limited. The lower limit of the content of zinc gluconate is preferably 0.1% by mass, more preferably 0.2% by mass, and even more preferably 0.3% by mass. The upper limit of the content of zinc gluconate is preferably 2% by mass, more preferably 1.5% by mass, and still more preferably 1% by mass.

The hair composition may contain other zinc compounds in addition to zinc gluconate. Other zinc compounds include, for example, zinc chloride, zinc undecylenate, zinc stearate, zinc paraphenolsulfonate, zinc palmitate, zinc myristate, zinc laurate, basic zinc carbonate, zinc sulfate, zinc oxide, and Examples include low temperature fired zinc oxide.

<Xanthan gum>
Xanthan gum is a polymeric material used as a thickening agent. The xanthan gum is not particularly limited, and any known xanthan gum can be used.

The content of xanthan gum based on the total mass of the hair composition is not particularly limited. The lower limit of the xanthan gum content is preferably 0.05% by mass, more preferably 0.1% by mass, and even more preferably 0.3% by mass. The upper limit of the content of xanthan gum is preferably 1.5% by mass, more preferably 1% by mass, and even more preferably 0.5% by mass.

<Bisethoxyglycol cyclohexanedicarboxylate>
Preferably, the hair composition contains bisethoxyglycol cyclohexanedicarboxylate. Bisethoxyglycol cyclohexanedicarboxylate is used as a humectant. It also has the effect of promoting the penetration of active ingredients into the hair and scalp.

The bisethoxyglycol cyclohexanedicarboxylate is not particularly limited, and any known bisethoxyglycol cyclohexanedicarboxylate can be used. Specific examples of bisethoxyglycol cyclohexanedicarboxylate include bisethoxydiglycol cyclohexane-1,4-dicarboxylate.

The content of bisethoxyglycol cyclohexanedicarboxylate with respect to the total mass of the hair composition is not particularly limited. The lower limit of the content of bisethoxyglycol cyclohexanedicarboxylate is preferably 0.5% by mass, more preferably 1% by mass, and still more preferably 2% by mass. The upper limit of the content of bisethoxyglycol cyclohexanedicarboxylate is preferably 10% by mass, more preferably 7% by mass, and even more preferably 5% by mass.

<Other ingredients>
In addition to the above-mentioned components, the hair composition of the present invention can contain other components that can be incorporated into the hair composition, within a range that does not impair the effects of the present invention.

Other ingredients include, for example, hair growth ingredients, surfactants, fatliquors, hair protectants, humectants, polymers, ultraviolet absorbers, sequestrants, solvents, pH adjusters, vitamins, antioxidants, Examples include antioxidant aids, preservatives, fragrances, and refreshing agents. These components may be used alone or in combination of two or more.

(Hair growth ingredient)
Examples of hair growth ingredients include peripheral vasodilators, hair root activators, anti-inflammatory agents, sebum secretion inhibitors, and the like.

Examples of peripheral vasodilators include carpronium chloride, nicotinic acid derivatives (e.g., benzyl nicotinate, nicotinamide, dl-α-tocopherol nicotinate, etc.), vitamin E derivatives (e.g., dl-α-tocopherol, d- α-tocopherol, dl-α-tocopherol acetate, etc.), acetylcholine, diphenhydramine hydrochloride, garlic iodide extract, spironolactone, γ-oryzanol, cephalanthine, nicorandil, minoxidil, diisopropylamine dichloroacetate, Jasmine extract, carrot extract, ginkgo biloba extract, cinchona extract , spruce extract, sophora extract, etc.

Examples of hair root activators include mononitroguaiacol sodium, placenta extract, N-acetyl-L-methionine, adenosine, adenine, disodium adenosine triphosphate, cephalanthine, potassium aspartate, pentadecanoic acid glyceride, pantothenic acid, pantothenic acid. Examples include ethyl, panthenol, yeast extract, garlic extract, and royal jelly.

Examples of anti-inflammatory agents include glycyrrhizinic acid derivatives (dipotassium glycyrrhizinate, ammonium glycyrrhizinate, etc.), hydrocortisone acetate, azulene, guaiazulene, prednisolone, chamomile extract, kumazasa extract, birch extract, and the like.

Examples of sebum secretion inhibitors include resorcinol, pyridoxine hydrochloride, and estradiol.
(surfactant)
Examples of the surfactant include anionic surfactants, cationic surfactants, amphoteric surfactants, lipophilic nonionic surfactants, and hydrophilic nonionic surfactants.

Examples of anionic surfactants include higher alkyl sulfate salts such as sodium lauryl sulfate and potassium lauryl sulfate, alkyl ether sulfate salts such as POE-lauryl sulfate triethanolamine and POE-sodium lauryl sulfate, and sodium lauroyl sarcosine. Higher fatty acid amide sulfonates such as N-acylsarcosinate, sodium N-myristoyl-N-methyltaurate, sodium coconut oil fatty acid methyltauride, sodium lauryl methyltauride, POE-sodium oleyl ether phosphate, POE-stearyl ether Phosphoric acid ester salts such as phosphoric acid, sodium di-2-ethylhexyl sulfosuccinate, monolauroyl monoethanolamide polyoxyethylene sodium sulfosuccinate, sulfosuccinates such as sodium lauryl polypropylene glycol sulfosuccinate, linear sodium dodecylbenzenesulfonate, linear Alkylbenzenesulfonates such as triethanolamine dodecylbenzenesulfonic acid and dodecylbenzenesulfonic acid, N-acylglutamates such as monosodium N-lauroylglutamate, disodium N-stearoylglutamate, and monosodium N-myristoyl-L-glutamate; Higher fatty acid ester sulfate salts such as hydrogenated coconut oil fatty acid glycerol sodium sulfate, POE-alkyl ether carboxylic acid, POE-alkyl allyl ether carboxylate, α-olefin sulfonate, higher fatty acid ester sulfonate, secondary alcohol sulfuric acid Examples include ester salts, higher fatty acid alkylolamide sulfate ester salts, sodium lauroyl monoethanolamide succinate, N-palmitoyl aspartate ditriethanolamine, sodium caseinate, and the like.

Examples of cationic surfactants include quaternary ammonium salt type cationic surfactants, poly(N,N'-dimethyl-3,5-methylenepiperidinium chloride), alkylisoquinolinium salts, dialkyl molybdenum Examples include phonium salt, POE-alkylamine, alkylamine salt, polyamine fatty acid derivative, amyl alcohol fatty acid derivative, benzalkonium chloride, benzethonium chloride, and the like. Examples of quaternary ammonium salt type cationic surfactants include stearyltrimethylammonium chloride, cetyltrimethylammonium chloride, behenyltrimethylammonium chloride, stearyltrimethylammonium bromide, distearyldimethylammonium chloride, and laurylbenzyldimethylammonium chloride. Can be mentioned.

Examples of the amphoteric surfactant include imidazoline type amphoteric surfactants such as 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-heptadecyl-N-carboxymethyl-N- Examples include betaine surfactants such as hydroxyethylimidazolinium betaine, lauryl dimethylaminoacetic acid betaine, alkyl betaine, amidobetaine, and sulfobetaine.

Examples of lipophilic nonionic surfactants include sorbitan fatty acid esters such as sorbitan monooleate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, and sorbitan monostearate, glycerin monoerucate, and sesquiolein. Examples include glycerin fatty acids such as acid glycerin and glycerin monostearate, propylene glycol fatty acid esters such as propylene glycol monostearate, hydrogenated castor oil derivatives, and glycerin alkyl ethers.

In addition to the above-mentioned PEG-60 hydrogenated castor oil, examples of hydrophilic nonionic surfactants include POE-sorbitan fatty acid esters such as POE-sorbitan monooleate and POE-sorbitan monostearate; POE-sorbit fatty acid esters such as POE-sorbitol monooleate, POE-glycerol fatty acid esters such as POE-glycerol monostearate, POE-glycerol monoisostearate, POE-glycerol triisostearate, POE-monooleate , POE-fatty acid esters such as POE-distearate and POE-monodioleate, POE-alkyl ethers such as POE-lauryl ether, POE-oleyl ether, POE-stearyl ether, POE-behenyl ether, POE-octylphenyl ether, POE - POE-alkylphenyl ethers such as nonylphenyl ether and POE-dinonylphenyl ether, pluronic types such as Bluronic, POE/POP cetyl ether, POE/POP-2-decyltetradecyl ether, POE/POP-monobutyl ether , POE/POP-alkyl ethers such as POE/POP-hydrogenated lanolin, tetraPOE/tetraPOP-ethylenediamine condensates such as Tetronic, POE-castor oil, POE-hydrogenated castor oil (average added mole of ethylene oxide) 10, 20, 40), POE-hydrogenated castor oil derivatives such as POE-hydrogenated castor oil monoisostearate, POE-beeswax lanolin derivatives such as POE-sorbit beeswax, coconut oil fatty acid diethanolamide, Alkanolamides such as lauric acid monoethanolamide and fatty acid isopropanolamide, POE-propylene glycol fatty acid ester, POE-alkylamine, POE-fatty acid amide, sucrose fatty acid ester, POE-nonylphenylformaldehyde condensate, alkyl ethoxydimethylamine oxide, etc. can be mentioned.

Note that the above "POE" is an abbreviation for polyoxyethylene, and means the same compound as the polyethylene glycol represented by the above "PEG". Furthermore, the above "POE-hydrogenated castor oil" means the same compound as "PEG-hydrogenated castor oil".

(fatliquoring agent)
Examples of the fatliquor include oils and fats, waxes, hydrocarbons, higher fatty acids, higher alcohols, synthetic ester oils, and the like.

Fats and oils include avocado oil, camellia oil, almond oil, macadamia nut oil, corn oil, grapeseed oil, medfoam oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, wheat germ oil, sasanqua oil, castor oil, and safflower oil. Oil, cottonseed oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, jojoba oil, germ oil, cacao butter, coconut oil, horse tallow, hydrogenated coconut oil, palm oil, beef tallow, mutton tallow, hydrogenated beef tallow, Examples include palm kernel oil, lard, Japanese wax kernel oil, and hydrogenated castor oil.

Waxes include beeswax, candelilla wax, cotton wax, carnauba wax, Japanese wax, bayberry wax, privet wax, spermaceti wax, montan wax, wax wax, lanolin, kapok wax, acetic acid lanolin, liquid lanolin, sugar cane wax, reduced lanolin, Jojo wax, hard lanolin, shellac wax. , POE-lanolin alcohol ether, and the like.

Examples of hydrocarbons include liquid paraffin, ozokerite, squalene, paraffin, ceresin, petrolatum, microcrystalline wax, and the like.
Examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, 12-hydroxystearic acid, undecylenic acid, tolic acid, isostearic acid, linoleic acid, linoleic acid, Examples include icosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).

Examples of higher alcohols include linear alcohols such as lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, and cetostearyl alcohol, monostearyl glycerin ether (batyl alcohol), 2-decyltetradecinol, and lanolin. Examples include branched chain alcohols such as alcohol, cholesterol, phytosterol, hexyldodecanol, isostearyl alcohol, and octyldodecanol.

Synthetic ester oils include isopropyl myristate, cetyl octoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate. , lanolin acetate, isocetyl stearate, isocetyl isostearate, ethylene glycol di-2-ethylhexylate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, di-2 - Glycerin heptyl undecanoate, trimethylolpropane tri-2-ethylhexylate, trimethylolpropane triisostearate, pentaneerythritol tetra-2-ethylhexylate, glycerin tri-2-ethylhexylate, trimethylolpropane triisostearate, cetyl 2- Ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleic acid oil, cetostearyl alcohol, acetoglyceride, 2-heptylundecyl palmitate, Diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptyl undecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-palmitic acid -hexyldecyl, 2-hexyldecyl adipate, diisopropyl sebatate, 2-ethylhexyl succinate, glyceryl trioctanoate, glyceryl triisopalmitate, isopropyl lanolin fatty acid, hexyl laurate, and the like.

(hair protectant)
Examples of hair protectants include linear polysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, and methylhydrogenpolysiloxane, and cyclic polysiloxanes such as decamethylpolysiloxane, dodecamethylpolysiloxane, and tetramethyltetrahydrogenpolysiloxane. Examples include siloxane and silicone resin.

(moisturizer)
Examples of humectants include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, amylolytic sugar, maltose, xylitose, Sugar alcohols such as starch-degrading sugar-reducing alcohols, amino acids, chondroitin sulfate, hyaluronic acid, acetylated sodium hyaluronate, mucoitin sulfate, collagen derivatives, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, seawater (dry deep sea water (including dry matter), chitosan derivatives, sodium pyrrolidone carboxylate, diglycerin/ethylene oxide/propylene oxide adducts, etc.

(Polymers)
Examples of the polymers include natural water-soluble polymers, semi-synthetic water-soluble polymers, synthetic water-soluble polymers, and inorganic water-based polymers.

Examples of natural water-soluble polymers include gum arabic, gum tragacanth, galactan, guar gum, carob gum, gum karaya, carrageenan, pectin, agar, quince seed (quince), algae colloid (cassava extract), and starch (rice, potato, wheat). Examples include plant-based polymers such as dextran, succinoglucan, and pullulan, microbial polymers such as casein, albumin, and gelatin.

Examples of semi-synthetic water-soluble polymers include starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch, methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, and sodium carboxymethylcellulose. Examples include cellulose polymers such as (CMC), crystalline cellulose, and cellulose powder, and alginic acid polymers such as sodium alginate and propylene glycol alginate ester.

Examples of synthetic water-soluble polymers include vinyl-based polymers such as polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymers, and polyoxyethylene-based polymers such as polyethylene glycol 20,000, 40,000, and 60,000. Examples include polymers, copolymer polymers such as polyoxyethylene polyoxypropylene copolymers, acrylic polymers such as sodium polyacrylate, polyethyl acrylate, and polyacrylamide, polyethyleneimine, and cationized polymers.

Examples of inorganic water-based polymers include bentonite, magnesium aluminum silicate (veegum), laponite, hectorite, and silicic anhydride.
The above polymers are used as thickeners. The content of polymers is preferably small, and more preferably substantially absent. Specifically, it is preferable that substantially no hydroxyethyl cellulose is contained. By substantially not containing hydroxyethylcellulose, it becomes easy to adjust the viscosity of the hair composition to a viscosity that allows it to easily remain in the hair and scalp.

Note that "not substantially contained" means that it is allowed to be contained at an impurity level.
(UV absorber)
Examples of the ultraviolet absorber include para-aminobenzoic acid, ethyl para-aminobenzoate, glyceryl para-aminobenzoate, amyl para-dimethylaminobenzoate, octyl para-dimethylaminobenzoate, 4-[N,N-di(2-hydroxypropyl) benzoic acid-based UV absorbers such as ethyl amino]benzoate, anthranilic acid-based UV absorbers such as homomenthyl-N-acetylanthranilate, ethylene glycol salicylate, phenyl salicylate, octyl salicylate, benzyl salicylate, p-tert-butyl salicylate Phenyl, salicylic acid UV absorbers such as homomenthyl salicylate, benzyl cinnamate, 2-ethoxyethyl paramethoxycinnamate, octyl paramethoxycinnamate, glyceryl mono-2-ethylhexanoate diparamethoxycinnamate, isopropyl/diisopropyl paramethoxycinnamate ester Cinnamic acid-based UV absorbers such as mixtures, urocanic acid-based UV absorbers such as urocanic acid and ethyl urocanate, hydroxymethoxybenzophenone, hydroxymethoxybenzophenone sulfonic acid, sodium hydroxymethoxybenzophenone sulfonate, dihydroxydimethoxybenzophenone, dihydroxydimethoxybenzophenone disulfone benzophenone UV absorbers such as sodium acid, dihydroxybenzophenone, and tetrahydroxybenzophenone, 4-tert-butyl-4'-methoxy-dibenzoylmethane, 2,4,6-trianilino-p-(carbo-2'-ethylhexyl- Examples include 1'-oxy)-1,3,5-triazine and 2-(2-hydroxy-5-methylphenyl)benzotriazole.

(Sequestering agent)
Examples of the sequestering agent include alanine, trisodium ethylenediaminehydroxyethyltriacetate, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, tartaric acid, Examples include succinic acid, edetic acid, phytic acid, and the like.

(solvent)
Examples of the solvent include water. In addition, lower alcohols such as methanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol; divalent alcohols such as ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, and 1,3-butylene glycol; Alcohol, trihydric alcohols such as glycerin, trimethylolpropane, 1,2,6-hexanetriol, tetrahydric alcohols such as pentaerythritol, pentahydric alcohols such as xylitol, hexahydric alcohols such as sorbitol, mannitol, diethylene glycol, Polyhydric alcohol polymers such as propylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, and dihydric alcohol alkyl ethers such as ethylene glycol monomethyl ether , dihydric alcohol alkyl ethers such as diethylene glycol monomethyl ether and diethylene glycol monoethyl ether, dihydric alcohol ether esters such as ethylene glycol monomethyl ether acetate, glycerin monoalkyl ethers such as xyl alcohol, ceracyl alcohol, and batyl alcohol, etc. .

The type of water is not particularly limited, and for example, distilled water, pure water, ultrapure water, purified water, tap water, etc. can be used. It can also be used in combination with alcohol used as a solvent.
(pH adjuster)
Examples of the pH adjuster include citric acid, lactic acid, acetic acid, hydrochloric acid, potassium hydroxide, sodium hydroxide, sodium lactate, sodium citrate, and sodium lactate. These can be used alone or in combination, and can be used not only to adjust the pH value but also to buffer the adjusted pH value.

(vitamins)
Examples of vitamins include vitamins A, B1, B2, B6, E, and derivatives thereof, pantothenic acid, and derivatives thereof.

(Antioxidant)
Examples of the antioxidant include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, and the like.

(Antioxidant aid)
Examples of preservatives include organic acids and derivatives thereof such as benzoic acid, sodium benzoate, undecylenic acid, salicylic acid, sorbic acid, paraoxybenzoate, phenols such as isopropylmethylphenol, phenoxyethanol, and 1,2-hexanediol. , 1,2-pentanediol and the like.

(Preservative)
Examples of preservatives include organic acids and their derivatives such as benzoic acid, sodium benzoate, undecylenic acid, salicylic acid, sorbic acid, paraoxybenzoate, phenols such as isopropylmethylphenol, phenoxyethanol, and 1,2-hexanediol. , 1,2-pentanediol and the like.

(fragrance)
The fragrance may be a natural fragrance or a synthetic fragrance, as a known fragrance used in hair compositions. Further, it may be a single fragrance or a mixed fragrance.

Specific examples of fragrances include menthol, carvone, anethole, eugenol, methyl salicylate, limonene, ocimene, n-decyl alcohol, citronellol, α-terpineol, methyl acetate, citronellyl acetate, methyl eugenol, cineole, linalool, ethyl linalool. , thymol, spearmint oil, peppermint oil, lemon oil, orange oil, sage oil, rosemary oil, perilla oil, wintergreen oil, clove oil, eucalyptus oil, pimento oil, d-camphor, d-borneol, fennel oil, cinnamon oil, cinnamaldehyde, peppermint oil, vanillin, etc.

(Refreshing agent)
Examples of the refreshing agent include l-menthol, menthyl lactate, 3-(menthyloxy)propane-1,2-diol, and the like.

<pH and viscosity of hair composition>
The pH of the hair composition is not particularly limited, but is preferably 5 or more and 6.4 or less, more preferably 5.2 or more and 6.2 or less.

When the pH of the hair composition is 5 or more and 6.4 or less, stability against temperature changes can be improved. The method for measuring pH is not particularly limited, and it can be measured using a known pH meter.

The viscosity of the hair composition is not particularly limited, but is preferably 1000 mPa·s or more and 3500 mPa·s or less. The viscosity of the hair composition is more preferably 1,500 mPa·s or more and 3,000 mPa·s or less, and even more preferably 1,500 mPa·s or more and 2,500 mPa·s or less.

When the hair composition has a viscosity of 1000 mPa·s or more and 3500 mPa·s or less, when it is applied to the hair, it tends to remain suitably in the hair or scalp.
Note that the viscosity of the hair composition means the viscosity of the hair composition at 25°C. The method for measuring viscosity is not particularly limited, but it can be measured by a known method using, for example, a B-type viscometer (manufactured by Toki Sangyo Co., Ltd.).

<Application form, dosage form, and use of hair composition>
The application form of the hair composition is not particularly limited, and it can be used, for example, as a pharmaceutical, a quasi-drug, or a cosmetic.

The dosage form of the hair composition is not particularly limited, and examples include paste, mousse, gel, liquid, emulsion, suspension, cream, ointment, aerosol, and spray.

As for the use of the hair composition, known ones can be appropriately employed, and examples thereof include hair restorers, hair tonics, milky lotions, lotions, shampoos, rinses, conditioners, and the like. Furthermore, since the hair composition of the present invention easily remains in the hair and scalp, it can be suitably used even on relatively long hair. For example, it can be suitably used on hair with a length of 10 cm or more. It can also be used as a female hair composition.

<Action and effect>
The effect of the hair composition of this embodiment will be explained.
When the hair composition contains 0.4% by mass or more of PEG-60 hydrogenated castor oil, it becomes possible to stably disperse xanthan gum in the hair composition. The stable dispersion of xanthan gum makes it easier for the hair composition to maintain an overall uniform viscosity. This makes it easier for the hair composition to remain in the hair and scalp, making it possible to massage the scalp without feeling uncomfortable. That is, it becomes possible to smoothly massage the scalp without worrying about dripping caused by the excessively low viscosity of the hair composition or difficulty in blending into the hair due to the excessively high viscosity of the hair composition. Furthermore, since the hair composition is easily absorbed into the hair, the zinc element synergistically becomes easier to penetrate into the hair.

Furthermore, since xanthan gum is a polyanion, it easily binds to zinc ions, which are cations, in an aqueous solution, for example. When xanthan gum binds to zinc ions, there is a possibility that the introduction of zinc element into the hair may be inhibited. On the other hand, when the hair composition contains 0.4% by mass or more of PEG-60 hydrogenated castor oil, the binding between xanthan gum and zinc ions can be suppressed. Therefore, effective introduction of zinc element into the hair becomes possible.

The effects of the hair composition of this embodiment will be explained.
(1) Contains 0.4% by mass or more of PEG-60 hydrogenated castor oil, and further contains zinc gluconate and xanthan gum.

Therefore, the feeling of use when massaging the scalp while attached to the hair is improved, and the penetration of the zinc element into the hair can be suitably promoted.
(2) Contains bisethoxyglycol cyclohexanedicarboxylate. Therefore, the penetration of zinc element into the hair can be promoted.

(3) It does not substantially contain hydroxyethyl cellulose. Therefore, it becomes easy to adjust the viscosity of the hair composition to a viscosity that allows it to easily stay on the hair and scalp.
<Example of change>
This embodiment can be modified and implemented as follows. This embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

- The hair composition of this embodiment may be configured without containing bisethoxyglycol cyclohexanedicarboxylate.
- Although the hair composition of this embodiment uses zinc gluconate as the zinc compound, it is not limited to this aspect. In place of zinc gluconate, other zinc compounds mentioned above may be used.

The present embodiment will be described in more detail with reference to test examples below, but the present invention is not limited thereto.
The hair compositions of Example 1 and Comparative Examples 1 and 2 shown in Table 1 were produced by mixing and stirring the respective components in accordance with a conventional method. In Table 1, the numerical value written on the right side of each component means the content (mass%). In Table 1, "Hydroxyethylcellulose (HEC Daicel SE900)" means hydroxyethylcellulose with product number SE900 manufactured by Daicel Millize Co., Ltd.

(Evaluation test)
The pH and viscosity of the hair compositions of Example 1 and Comparative Examples 1 and 2 were measured. pH was measured using a known pH meter. The viscosity was measured using a known B-type viscometer (manufactured by Toki Sangyo Co., Ltd.). In addition, the effect of promoting penetration of zinc element into hair and the feeling of use of the hair composition were evaluated.

(Effect of promoting zinc element penetration into hair)
In evaluating the effect of promoting zinc element penetration into hair, the following operations (1) to (9) were performed in order.

(1) Four hair bundles weighing approximately 2 g were prepared. Five hairs with a length of 10 cm or more and 15 cm or less were cut from each hair bundle. The middle part of each hair, excluding one end (upper end) and the other end (lower end) in the length direction, having a length of about 5 cm, was used as untreated hair.

(2) 0.2 g of the hair composition of each example was applied to the above hair bundles, and after blending into the hair bundles using a comb, the compositions were left at room temperature for 30 minutes.
(3) 150 mL of a 1% sodium lauryl sulfate (SLS) aqueous solution was placed in a beaker, and the hair bundle was placed in the beaker and washed for 5 seconds.

(4) The hair bundle was placed in 150 mL of ion-exchanged water in a beaker and washed for 5 seconds.
(5) The hair bundle was placed in 150 mL of ion-exchanged water in a separate beaker and washed for 5 seconds.
(6) The washed hair bundle was placed in a dryer set at 57° C. and dried for 30 minutes.

(7) The operations (2) to (6) above were repeated 9 times, resulting in a total of 10 chemical treatments and washings.
(8) Five hairs each having a length of 10 cm or more and 15 cm or less were cut from the hair bundles that had been treated with chemicals and washed 10 times in total. The middle part of each hair, which was approximately 5 cm in length excluding one end (upper end) and the other end (lower end) in the length direction, was used as treated hair.

(9) The zinc element content of the untreated hair and treated hair was measured using an energy dispersive X-ray fluorescence spectrometer EDX-7000 (manufactured by Shimadzu Corporation).
The rate of change in the content of zinc element in treated hair relative to untreated hair is shown in the "Zinc change rate (%)" column of Table 1.

(Feeling of use)
The feeling of use was evaluated by sensory evaluation by a total of 90 monitors, 30 each of women in their 40s, 50s, and 60s. Ninety monitors used the hair compositions of Example 1 and Comparative Examples 1 and 2, respectively. During use, the hair composition was applied to the hair, and then the scalp was massaged to blend it into the hair.

The feeling of use was evaluated on a seven-point scale from stage 1 to stage 7. Note that the higher you go to stage 7, the better the evaluation.
Stage 1: Dripping and difficulty in adhering to hair are felt extremely strongly, making it unsuitable for use.

Stage 2: Dripping and difficulty in adhering to the hair are strongly felt, making the product unpleasant to use.
Stage 3: There are problems with use, such as dripping and difficulty in adhering to the hair.
Stage 4: Although there is some dripping and difficulty in blending into the hair, the product is at a level that can be used normally.

Stage 5 There is almost no dripping or difficulty in blending into the hair, and there are no problems in use.
Stage 6: There is almost no dripping or difficulty in adhering to the hair, and the product has a good feeling of use.
Stage 7: There is no dripping or difficulty in adhering to the hair, and the product has an excellent usability.

Among the above, evaluations from stage 5 to stage 7 were considered good, and the proportion (%) of stage 5 to stage 7 among all responses was calculated. Evaluation was made according to the following evaluation criteria.
・Evaluation criteria for usability ◎ (Good): 80% or more ○ (Acceptable): 50% or more, less than 80% × (Not good): Less than 50% (Evaluation results)
In Table 1, the zinc change rates of Comparative Examples 1 and 2 were -9.0% and -47.6%, respectively. In Comparative Examples 1 and 2, the content of zinc element decreased after the treatment, and it was found that the permeability of zinc element was low. On the other hand, in Example 1, the zinc change rate was +24.5%, and it was confirmed that the penetration of the zinc element was suitably promoted. Furthermore, it was found that in Comparative Examples 1 and 2, the usability was fair or poor, whereas in Example 1, the usability was good.

Claims (3)

Contains 0.4% by mass or more of PEG-60 hydrogenated castor oil,
Furthermore, a hair composition characterized by containing zinc gluconate and xanthan gum. The hair composition according to claim 1, containing bisethoxyglycol cyclohexanedicarboxylate. The hair composition according to claim 1 or 2, which does not substantially contain hydroxyethylcellulose.