JP6735085B2 - Hair cosmetics - Google Patents

Description

The present invention relates to hair cosmetics.

Hair is exposed to damage due to daily hair washing, brushing, and heat from a dryer. In recent years, it has become common to change the appearance of hair by freely changing the hair color (coloring, etc.) and changing the hairstyle by chemical treatment (perm, etc.). When the frequency of such treatment increases, damage is accumulated in the hair, split ends and broken hair are generated, cuticles are exfoliated, the cortex is exposed, and the tips of the hair are dry. Therefore, it is required to have a moist and moist feeling, a smooth and smooth fingering feeling, and a soft touch to the tips of the hair, and daily hair care is performed.

Here, as a technique for giving gloss to hair, there are techniques described in Patent Documents 1 and 2.
Patent Document 1 (Japanese Patent Publication No. 2001-506273) describes a hair wash having a gloss-increasing effect, which uses a surfactant or a surfactant mixture, a fruit acid mixture, and panthenol or a derivative thereof in a specific amount. ing. It is said that such a hair wash can achieve glossing of the hair surface without adding a fatty or oily component to the hair styling cosmetic.

Further, in Patent Document 2 (JP 2004-75545 A), dicarboxylic acids, hydroxycarboxylic acids or salts thereof, specific organic solvents, anionic surfactants having a sulfuric acid residue and vitamins, amino acids, amino acid analogs , A protein hydrolyzate, or a derivative thereof, and a shampoo composition having a pH in a specific range are described. According to the document, such a shampoo composition has excellent stability and can effectively impart gloss, softness, and moisturizing feel to hair, and has good lathering property and good lathering property when washing hair. It is supposed to be possible.

In addition, Patent Document 3 (JP-A-2015-27977) provides good foam sustainability and rinsability, and when applied to hair, has good combability and softness from the time of rinsing to the time of drying. As a technique for providing a cleansing composition for skin or hair which can impart a good moisturizing feeling to the skin when applied to the skin while giving a cohesive feeling, a carbon number of 12 is provided. A cleansing composition for skin or hair containing the above internal olefin sulfonates of 24 or less is described.

Special table 2001-506273 gazette JP, 2004-75545, A JP, 2015-27977, A

In daily hair care activities, brushing, blowing, ironing, etc. are used to extend hair. When the hair is stretched, a phenomenon in which the cuticle flips up (lifting up) is observed, and it is thought that the adhesion between the cuticles is weakened and peeling is promoted. Therefore, there is a demand for a hair cosmetic composition that can suppress lift-up even when a force for stretching hair is applied, and can also suppress cuticle separation.

In this respect, the techniques described in Patent Documents 1 to 3 described above were not made from the viewpoint of suppressing peeling of the cuticle when the hair was stretched, and there was still room for improvement to obtain the effect. ..

The present invention has been made in view of these circumstances, and provides a hair cosmetic composition that suppresses peeling of the cuticle when the hair is stretched.

The present invention provides a hair cosmetic composition containing the following components (A) to (C) and water.
(A) Succinic acid or its salt (B) Panthenol (C) Chelating agent

The present invention also provides a method for treating hair, which comprises applying the hair cosmetic composition of the present invention to hair.

According to the hair cosmetic composition of the present invention, peeling of the cuticle when the hair is stretched can be suppressed.

Hereinafter, embodiments of the present invention will be described with reference to specific examples of each component. Each component may be used alone or in combination of two or more.
Moreover, in this specification, pH means the measured value (glass electrode measuring method) at the time of diluting 20 times with water at 25 degreeC.

(Component (A))
The component (A) is succinic acid or a salt thereof.
Examples of the component constituting the salt include alkali metals such as sodium and potassium, cations derived from alkanolamines such as ammonium, monoethanolamine, diethanolamine and triethanolamine, and cations derived from basic amino acids such as arginine and lysine. Can be mentioned.
In the present embodiment, by using the component (A) in combination with the components (B) and (C) described below in the hair cosmetic composition, it is possible to effectively suppress the lift-up of the cuticle when the hair is stretched. be able to. As a result, peeling of the cuticle can be suppressed, and the gloss of the hair at the time of finishing can be improved.

The content of the component (A) in the hair cosmetic composition, when used in combination with the components (B) and (C), suppresses peeling of the cuticle during stretching of the hair and imparts gloss to the hair. The acid content is preferably 0.1% by mass or more, more preferably 0.8% by mass or more, still more preferably 1.0% by mass or more, based on the entire hair cosmetic composition. From the viewpoint of further improving the stability of the hair cosmetic, the content of the component (A) is preferably 5% by mass or less as an acid, more preferably 4% by mass or less, based on the entire hair cosmetic. More preferably, it is 3 mass% or less.

(Component (B))
Ingredient (B) is panthenol. Either the D form or the DL form may be used as the panthenol of the component (B).

The content of the component (B) in the hair cosmetic composition, when used in combination with the components (A) and (C), suppresses peeling of the cuticle at the time of stretching the hair and imparts gloss to the hair. It is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.03% by mass or more, and preferably 1% by mass or less, based on the entire hair cosmetic composition. , More preferably 0.5% by mass or less, further preferably 0.1% by mass or less.

Further, in the hair cosmetic composition of the present embodiment, the mass ratio ((A)/(B)) of the content of the component (A) as an acid to the content of the component (B) is such that cuticle peeling at the time of hair stretching is performed. From the viewpoint of suppression, it is preferably 5 or more, more preferably 10 or more, still more preferably 20 or more, and preferably 100 or less, more preferably 50 or less, further preferably 40 or less.

(Component (C))
Component (C) is a chelating agent. The component (C) is not limited as long as it has the ability to chelate metal ions, and examples thereof include aminopolycarboxylic acid type chelating agents; aromatic and aliphatic carboxylic acid type chelating agents other than the component (A); ether poly Carboxylic acid type chelating agents; phosphonic acid type chelating agents; hydroxycarboxylic acid type chelating agents; phosphoric acid type chelating agents; polymer electrolyte (including oligomer electrolyte) type chelating agents, and dimethylglyoxime (DG). The chelating agent of component (C) may be a free acid type. The component (C) may be in the form of an alkali metal salt such as sodium salt or potassium salt; a salt such as ammonium salt, or may be in the form of a hydrolyzable ester derivative thereof.

Specific examples of the aminopolycarboxylic acid type chelating agent include ethylenediaminetetraacetic acid (EDTA), cyclohexanediaminetetraacetic acid, nitrilotriacetic acid, iminodiacetic acid, N-(2-hydroxyethyl)iminodiacetic acid, diethylenetriaminepentaacetic acid, N-(2 -Hydroxyethyl)ethylenediamine triacetic acid and glycol ether diamine tetraacetic acid, ethylenediamine disuccinic acid and salts thereof. When the aminopolycarboxylic acid type chelating agent is a salt, it is preferably a sodium salt, a potassium salt or the like or an ammonium salt.

Specific examples of the aromatic or aliphatic carboxylic acid type chelating agent other than the component (A) include oxalic acid, malonic acid, glutaric acid, adipic acid, itaconic acid, aconitic acid, pyruvic acid, salicylic acid, acetylsalicylic acid, hydroxybenzoic acid. Acids, aminobenzoic acid (including anthranilic acid), phthalic acid, fumaric acid and trimellitic acid, and salts thereof, methyl esters and ethyl esters.

Specific examples of the hydroxycarboxylic acid type chelating agent include malic acid, citric acid, glycolic acid, gluconic acid, heptonic acid, tartaric acid, lactic acid and salts thereof.

Specific examples of the ether polycarboxylic acid type chelating agent include diglycolic acid, compounds represented by the following general formula (1), similar compounds thereof and salts thereof (for example, sodium salts).

Specific examples of the phosphonic acid-based chelating agent include iminodimethylphosphonic acid (IDP), alkyldiphosphonic acid (ADPA), 1-hydroxyethane-1,1-diphosphonic acid (for example, DEQUEST (registered trademark) 2010) and these. And salts thereof.

Specific examples of the phosphoric acid-based chelating agent include orthophosphoric acid, pyrophosphoric acid, triphosphoric acid, and polyphosphoric acid.

Specific examples of the polyelectrolyte (including oligomer electrolyte)-based chelating agent include acrylic acid polymers, maleic anhydride polymers, α-hydroxyacrylic acid polymers, itaconic acid polymers, and polymers of these polymers. Examples thereof include a copolymer composed of two or more kinds of constituent monomers and an epoxysuccinic acid polymer.

The chelating agent as the component (C) is preferably an aminopolycarboxylic acid type chelating agent, more preferably EDTA, ethylenediaminedisuccinic acid and a compound thereof, from the viewpoints of availability and suppressing peeling of the cuticle during hair stretching. One or more selected from the group consisting of salts, and more preferably one or more selected from EDTA-2Na and 3Na ethylenediaminedisuccinate.

The content of the component (C) in the hair cosmetic composition, when used in combination with the components (A) and (B), suppresses peeling of the cuticle during stretching of the hair and imparts gloss to the hair. It is preferably 0.01% by mass or more, more preferably 0.02% by mass or more, still more preferably 0.04% by mass or more, and preferably 1% by mass or less, based on the entire hair cosmetic composition. , More preferably 0.8% by mass or less, further preferably 0.5% by mass or less.

In the hair cosmetic composition of the present embodiment, the mass ratio ((A)/(C)) of the content of the component (A) as an acid to the content of the component (C) is such that cuticle peeling at the time of hair stretching is From the viewpoint of suppression, it is preferably 0.5 or more, more preferably 5 or more, and preferably 20 or less, more preferably 10 or less.

Moreover, the hair cosmetics in this embodiment contains water. As the water, ion exchanged water, distilled water or the like can be used.
The content of water in the hair cosmetic may be, for example, the balance excluding components other than water in the hair cosmetic. The content of water is preferably 50% by mass or more, more preferably 60% by mass or more, and preferably 99% by mass or less, based on the entire hair cosmetic composition.

Next, the pH of the hair cosmetic composition will be described.
In the hair cosmetic composition of the present embodiment, the pH at 25° C. when diluted 20 times with water is preferably 2 or more, and more preferably from the viewpoint of improving the effect of suppressing cuticle peeling during hair stretching. Is 3 or more, more preferably 4 or more, preferably 8 or less, and more preferably 7 or less.

The hair cosmetic composition of the present embodiment further comprises a surfactant, in order to obtain desired effects such as improvement in cleaning performance, application of the hair cosmetic composition, feel during rinsing or drying, and finish after drying. An oil agent or the like may be contained.

For example, the hair cosmetic composition of the present embodiment preferably contains the component (D) surfactant.
(Component (D))
Specific examples of the component (D) surfactant include anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants. These may be used alone or in combination of two or more.

(Component (D1)) Anionic Surfactant The anionic surfactant of the component (D1) may be any one used in hair cosmetics, and specific examples thereof include alkylsulfates, alkenylsulfates, and polyoxysulfates. Sulfate type anionic surfactants such as alkylene alkyl ether sulfate, polyoxyalkylene alkenyl ether sulfate, sulfosuccinic acid alkylene alkylphenyl ether sulfate; sulfosuccinic acid alkyl ester salt, polyoxyalkylene sulfosuccinic acid alkyl ester salt, alkane sulfone Examples thereof include sulfonic acid type anionic surfactants such as acid salts; higher fatty acid salts; carboxylic acid type anionic surfactants such as polyoxyalkylene alkyl ether carboxylic acids or salts thereof. These may be used alone or in combination of two or more.

Among them, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, alkyl sulfates, and alkenyl sulfates are preferable. Among them, polyoxyalkylene alkyl ether sulfates are represented by the following general formula (2). Polyoxyethylene alkyl ether sulfate is preferred.

R ¹ O(CH ₂ CH ₂ O) _a SO ₃ M (2)
(In the general formula (2), R ¹ represents an alkyl group or an alkenyl group having 8 to 18 carbon atoms, M represents an alkali metal, alkaline earth metal, ammonium, alkanolamine or basic amino acid, and a represents It is the average number of moles of ethylene oxide added, and is a number of 0.5 or more and 5 or less on a mass average.)

Among these, those in which R ¹ in the general formula (2) is an alkyl group having 12 or more and 14 or less carbon atoms are preferable from the viewpoint of achieving both quick foaming and good foam feeling. The average addition mole number a of ethylene oxide is preferably 0.9 or more and 4 or less, and more preferably 1 or more and 3 or less. Furthermore, polyoxyethylene alkyl ether sulfates in which M is ammonium or sodium are preferable, and ammonium laureth sulfate and sodium laureth sulfate are more preferable.

The content of the anionic surfactant as the component (D1) in the hair cosmetic is preferably 0.5% by mass or more, and more preferably 1 with respect to the entire hair cosmetic from the viewpoint of improving foaming. It is at least mass%, more preferably at least 5 mass%. Further, from the viewpoint of improving foam breakage and suppressing squeaking of hair during rinsing, the content of the anionic surfactant in the entire hair cosmetic composition is preferably 20% by mass or less, more preferably 17% by mass or less. , More preferably 15% by mass or less, even more preferably 13% by mass or less, particularly preferably 12% by mass or less.

(Component (D2)) Cationic Surfactant The cationic surfactant of component (D2) may be any one used in hair cosmetics, and specific examples thereof include a tertiary amine compound or a salt thereof and a secondary amine compound. Quaternary ammonium salts can be mentioned. These may be used alone or in combination of two or more.

Specific examples of the cationic surfactant include ether amines or hydroxy ether amines represented by the following general formula (3) and salts thereof, quaternary ammonium salts represented by the following general formula (4), and One or more selected from the group consisting of amidoamines represented by the following general formula (5) or salts thereof are used.

(In the general formula (3), R ² represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms, and R ³ and R ⁴ are the same or different and 1 to 6 carbon atoms. Alkyl group or -(AO) _b H (A is an alkylene group having 2 to 4 carbon atoms, b is a number of 1 to 6), and b A's may be the same or different, and their sequence is . is any) indicates, Y is -O- (CH _{2) 3} - or _{- (OCH 2 CH (OH)} CH 2) c - (c shows the show) the number of 1 to 5)..

As the ether amine, the hydroxy ether amine represented by the general formula (3), and salts thereof, salts formed with an organic acid may be used, or an acid may be added to the hair cosmetic composition of the present embodiment, A salt may be formed in the hair cosmetic together with the pH adjuster. Examples of such acids include acids having a short-chain alkyl group such as alkylphosphoric acid, alkylsulfonic acid, and alkylsulfate; acidic amino acids such as L-glutamic acid and L-aspartic acid; pyroglutamic acid; benzoic acid and p-toluenesulfone. Aromatic acids such as acids; glycolic acid, lactic acid, glyceric acid, gluconic acid, pantothenic acid, malic acid, tartaric acid, citric acid and other hydroxy acids; and acetic acid. Of these, organic acids are preferable, particularly acidic amino acids, pyroglutamic acid, and hydroxy acids, and more preferable are hydroxy acids, from the viewpoint of providing moisturizing and softening effects on hair.
In the present embodiment, the content of the organic acid in the hair cosmetic composition is from the viewpoint of suppressing the squeaking of the hair during rinsing, with respect to the amine equivalent of the ether amine and the hydroxy ether amine represented by the general formula (3). , Preferably 0.5 to 1.5 times by mole, more preferably 1 to 1.3 times by mole.

The cationic surfactant represented by the general formula (3) is preferably an ether amine, more preferably N,N-dimethyl-3-hexadecyloxypropylamine, N,N-dimethyl-3-octadecyloxy. It is one or more selected from the group consisting of propylamine.

(In the general formula (4), R ⁵ represents a linear or branched alkyl group or alkenyl group having 12 to 24 carbon atoms, and X ⁻ represents an anion.)

Preferred specific examples of the quaternary ammonium salt represented by the general formula (4) include lauryltrimethylammonium salt, palmityltrimethylammonium salt, stearyltrimethylammonium salt, oleyltrimethylammonium salt, aralkyltrimethylammonium salt and behenyltrimethylammonium salt. Examples thereof include salts, and stearyl trimethyl ammonium salt and behenyl trimethyl ammonium salt are more preferable. Specific examples of the anion X ⁻ include halide ions such as chloride ion and bromide ion; inorganic substances such as methosulfate ion, ethosulfate ion, metophosphate ion, etophosphate ion and metcarbonate ion; Examples thereof include organic anions, halide ions are preferable, and chloride ions are more preferable.

(In the above general formula (5), R ⁶ represents a linear or branched alkyl group having 17 or more and 21 or less carbon atoms, and two R ⁷ are the same or different alkyl groups having 1 or more and 4 or less carbon atoms. , And d is a number of 2 or more and 4 or less.)

Preferred specific examples of the amidoamine represented by the general formula (5) include stearic acid dimethylaminoethylamide, stearic acid dimethylaminopropylamide (manufactured by Toho Chemical Industry Co., Ltd.; Catinal MPAS), stearic acid diethylaminoethylamide (Toho Chemical Industry Co., Ltd.). Manufactured by Katinal AEAS), stearic acid diethylaminopropylamide, stearic acid dipropylaminoethylamide, stearic acid dipropylaminopropylamide, behenic acid dimethylaminopropylamide (manufactured by Nikko Chemicals; amidoamine MPB), behenic acid diethylaminopropylamide ( Toho Chemical Industry Co., Ltd.; Catinal GMPA) and the like are mentioned, and stearic acid dimethylaminopropylamide, stearic acid diethylaminoethylamide, behenic acid dimethylaminopropylamide, behenic acid diethylaminopropylamide and the like are more preferable.

As the amidoamine represented by the general formula (5) or a salt thereof, a salt formed with an organic acid may be used, or an acid may be added to the hair cosmetic composition of the present embodiment to form a hair cosmetic composition together with a pH adjuster. The salt may be formed therein. Examples of such an acid include acids having a short-chain alkyl group such as alkylphosphoric acid, alkylsulfonic acid, and alkylsulfate; acidic amino acids such as L-glutamic acid and L-aspartic acid; pyroglutamic acid; benzoic acid and p-toluenesulfone. Aromatic acids such as acids; glycolic acid, lactic acid, glyceric acid, gluconic acid, pantothenic acid, malic acid, tartaric acid, citric acid and other hydroxy acids; and acetic acid. Of these, organic acids are preferable, particularly acidic amino acids, pyroglutamic acid, and hydroxy acids, and more preferable are hydroxy acids, from the viewpoint of providing moisturizing and softening effects on hair.
In the present embodiment, the content of the organic acid is preferably, with respect to the amine equivalent of the amidoamine represented by the general formula (5), from the viewpoint of maintaining the lubricity of hair and suppressing the squeaking during rinsing. The molar ratio is 0.5 to 1.5, and more preferably 1 to 1.3.

Among these cationic surfactants, from the viewpoint of suppressing squeaking during rinsing, an ether amine represented by the general formula (3) or a quaternary ammonium salt represented by the general formula (4) is preferably used. It is more preferable to use the quaternary ammonium salt represented by the general formula (4), and it is further preferable to use cetyltrimethylammonium chloride (hereinafter, also referred to as “cetrimonium chloride”).

The content of the cationic surfactant of component (D2) in the hair cosmetic composition is preferably 0.05% by mass or more based on the total amount of the hair cosmetic composition from the viewpoint of suppressing the squeaking of hair during rinsing. More preferably 0.1% by mass or more, further preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, particularly preferably 1% by mass or more, even more preferably 5% by mass or more, Further, it is preferably 20% by mass or less, more preferably 15% by mass or less, and further preferably 12% by mass or less. In addition, about said content, about general formula (3) and (5), the mass as an amine is shown, and about general formula (4), the mass as a salt is shown.

(Component (D3)) Nonionic Surfactant The nonionic surfactant may be any one used in hair cosmetics, and specific examples thereof include alkyl polyglycoside; polyoxyethylene lauryl ether, polyoxyethylene stearyl ether. , Polyoxyethylene alkyl ethers such as polyoxyethylene isostearyl ether; polyoxyalkylene alkyl ethers such as polypropylene glycol caprylyl ether; polyoxyethylene hydrogenated castor oil; glycerin fatty acid ester; sorbitan fatty acid ester; polyoxysorbitol fatty acid ester; polyethylene (Poly)ethylene glycol fatty acid ester such as glycol fatty acid ester; polyoxyalkylene fatty acid ester; polyoxyalkylene sorbitan fatty acid ester such as polyoxyethylene sorbitan fatty acid ester; monoalkyl glyceryl ether such as 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether A monoalkenyl glyceryl ether and the like. The fatty acid in the nonionic surfactant may be a straight chain fatty acid or a branched chain fatty acid. These may be used alone or in combination of two or more.

The content of the nonionic surfactant as the component (D3) in the hair cosmetic composition may improve the storage stability of the hair cosmetic composition, provide good foaming during hair washing, and have good detergency such as sebum stains. From the viewpoint of improving and suppressing the squeaking of hair during rinsing, it is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and further preferably 1% by mass with respect to the entire hair cosmetic composition. It is at least 10% by mass, preferably 7% by mass or less, more preferably 5% by mass or less.

(Component (D4)) Amphoteric surfactant As long as the amphoteric surfactant is used in hair cosmetics, betaine-type surfactants, amino acid-type surfactants, imidazoline-type surfactants, aminoxide-type surfactants. Examples thereof include surfactants. These may be used alone or in combination of two or more.
Among these, specific examples of betaine-type surfactants include carbobetaine-type surfactants such as alkylcarbobetaine; alkylsulfosulfobetaines such as alkylsulfobetaine and laurylhydroxysultaine, and sulfobetaine-type such as alkylamidohydroxysulfobetaine. Examples thereof include surfactants; alkylamidoamine type betaines; alkylimidazoline type betaines.
Among them, the amphoteric surfactant is preferably alkylamidopropyl betaine or alkyl hydroxysulfobetaine having an alkyl group having 8 to 14 carbon atoms, more preferably alkyl hydroxy, from the viewpoint of foam quality and feeling of use after washing. Sulfobetaine, more preferably one or more selected from the group consisting of coconut oil fatty acid hydroxysulfobetaine, lauryl hydroxysulfobetaine, myristyl hydroxysulfobetaine, and even more preferably lauryl hydroxysulfobetaine. ..

The content of the amphoteric surfactant of the component (D4) in the hair cosmetic is preferably 0.1 mass with respect to the entire hair cosmetic from the viewpoint of improving foaming and suppressing squeaking of hair during rinsing. % Or more, more preferably 0.2% by mass or more, further preferably 0.5% by mass or more, preferably 10% by mass or less, more preferably 5% by mass or less, further preferably 4% by mass or less. It is not more than mass %.

The hair cosmetic composition of the present embodiment preferably contains (D1) or (D2) among these surfactants.

Moreover, you may mix|blend a pH adjuster with the hair cosmetics in this embodiment. Examples of such a pH adjuster include organic acids other than the above components (A) and (C). In addition, as another pH adjuster, a base such as sodium hydroxide, potassium hydroxide, or ammonium chloride may be used in combination with these organic acids.

In the hair cosmetic composition of the present embodiment, in addition to the above components, components used in ordinary hair cosmetic compositions can be appropriately blended according to the desired effect. Examples of such optional components include alcohols having 1 to 6 carbon atoms such as ethanol; cationic polymers such as cationized cellulose and cationized guar gum; antidandruff agents; vitamin agents; fungicides; glycyrrhizinic acid such as dipotassium glycyrrhizinate. And its salts, anti-inflammatory agents such as glycyrrhetinic acid and its salts; preservatives such as benzoic acid and its salts; moisturizers other than component (B) such as sorbitol; coloring agents such as dyes and pigments; polar solvent extraction of eucalyptus Eucalyptus extract such as thing, conchiolin or its hydrolyzate, honey, royal jelly, protein or its hydrolyzate obtained from silk, protein-containing extract obtained from seeds of legumes, ginseng extract, rice germ extract, Hiba mata extract, aloe extract, lotus extract, pomegranate extract, nobara extract, chamomile extract, licorice extract, peach leaf extract, chlorella extract and other extracts; pearlizing agent such as titanium oxide; fragrance UV absorbers; antioxidants; shea butter; rose water; sunflower oil; orange oil; eucalyptus oil and the like.

Next, a method for producing a hair cosmetic will be described.
In the present embodiment, the hair cosmetic is produced, for example, by mixing the components (A) to (C) and other components as appropriate in a predetermined procedure and dissolving or dispersing them in water.
For example, in the method for producing a hair cosmetic composition according to the present embodiment, components (A) to (C) are uniformly mixed with water heated to about 25 to 100° C. and dissolved, and then at room temperature (25° C., the same below). Including the step of cooling to.
Moreover, when the hair cosmetic further contains the component (D), for example, the components (A) to (C) are uniformly mixed with water heated to about 25 to 100° C., and when dissolved, the component (D) is added. And uniformly mix and cool to room temperature.

In the hair cosmetic composition obtained in the present embodiment, by using the components (A) to (C) described above in combination, a physical force for extending the hair like during use of brushing, blowing, ironing or the like is used. Even if works, the lift up of the cuticle can be suppressed. Therefore, it is possible to suppress the peeling of the cuticle and improve the gloss of the hair when finished. That is, when the cuticle is peeled off, the unevenness of the surface of the hair is increased, so that it becomes difficult to obtain gloss of the hair at the time of finishing.However, in the hair cosmetic composition of the present embodiment, the cuticle is prevented from peeling off, so that the hair at the time of finishing is cut off. Can give a desirable luster. Further, according to the present embodiment, for example, it is possible to maintain the hair in a healthy state and reduce the deterioration of the feel of the hair.

There is no limitation on the form of the hair cosmetic composition of the present embodiment, and a liquid form, a gel form or the like can be appropriately selected, but a liquid form using water or water and a lower alcohol as a solvent is preferable.

Further, the hair cosmetic composition of the present embodiment is used after being rinsed off, for example, after being applied to hair, and more specifically, it is used in a bathroom such as a hair rinse, a hair conditioner, a hair treatment, and a hair pack. There are things.

Further, the hair treatment method in the present embodiment includes applying the hair cosmetic composition in the present embodiment described above to hair. The hair cosmetic composition applied to the hair may or may not be washed off, and it is preferable to wash it off. That is, the hair treatment method using the hair cosmetic composition according to the present embodiment preferably includes applying the hair cosmetic composition to hair and washing the hair. Further, a hair treatment method in which the hair cosmetic of the present embodiment is applied to washed hair and the hair is dried without washing it may be used.
Furthermore, the method for conditioning hair using the hair cosmetic composition of the present embodiment includes a step of applying the hair cosmetic composition of the present embodiment to hair, then applying another hair cosmetic composition, and washing the hair. Can also At this time, after applying the hair cosmetic composition according to the present embodiment to the hair and before applying the other hair cosmetic composition, the hair cosmetic composition according to the present embodiment may or may not be washed off. Is more preferable. Further, it is preferable to apply another hair cosmetic and leave it for 30 seconds to 10 minutes to wash away. Here, the other hair cosmetics are, for example, emulsion type hair cosmetics containing a cationic surfactant, an aliphatic alcohol having 12 to 24 carbon atoms, an oil, and water. In addition, the method for conditioning the hair in the present embodiment may further include a step of applying a hair cleansing agent to the hair and washing the hair before applying the hair cosmetic composition in the present embodiment.
The hair cosmetic composition of the present embodiment can suppress cuticle peeling during hair stretching by applying and treating the hair as described above.

The embodiments of the present invention have been described above, but these are examples of the present invention, and various configurations other than the above can be adopted.

(Examples 1 to 5, Comparative Examples 1 to 8)
Hair cosmetics having the compositions shown in Table 1 and Table 2 were prepared and evaluated according to the following methods. The evaluation method and evaluation criteria are shown below.

(Method for manufacturing hair cosmetics)
Components (A) to (C) were mixed and dissolved in water heated to 60°C. For the example containing the component (D), the component (D) was added here to make it uniform. And it cooled to room temperature and obtained the hair cosmetics of each example.
In each example, hair is blended with each raw material so that the content of each component in the obtained hair cosmetic composition is as shown in Table 1 and Table 2 depending on the amount of the component contained in the raw material. I got cosmetics.

(PH measuring method)
The pH was measured at 25° C. using a pH meter (HM-30R type) manufactured by Toa DKK Co., after the sample was diluted 20 times by mass with purified water and dissolved by stirring.

(Preparation of hair bundle for evaluation)
Bleached hair was prepared by making a tress with 5 g of untreated Japanese hair and a length of 25 cm.
The bleaching treatment was carried out by using the above tress with a prettier foam bleach hybrid manufactured by Kao Co., Ltd. with a mixing ratio of 1 and 2 liquids of 1:2, a bath ratio of hair and mixed liquid of 1:3, and an immersion time of 20 minutes at room temperature. .. After the immersion treatment, it was rinsed with tap water at 40° C., towel-dried, and then dryer-dried. What carried out this series of processing 3 times was made into the "hair bundle for evaluation."

(Method of treating hair bundle for evaluation)
After moistening the evaluation hair bundle with 40° C. tap water, 0.5 g of the evaluation shampoo shown below was applied, and after foaming for 30 seconds, the hair was rinsed with 40° C. tap water. After this, it was towel dried. This was designated as "hair bundle for evaluation before treatment".
0.5 g of the hair cosmetic composition of each example shown in Table 1 or Table 2 was applied to this hair bundle, and the mixture was allowed to spread for 1 minute. Then, the hair bundle was thoroughly rinsed with tap water at 40° C. and then towel-dried. This was designated as a "hair bundle for evaluation after treatment".

Formulation of shampoo for evaluation (pH 7.0)
Polyoxyethylene (2.5) lauryl ether sulfate sodium salt 15.5 mass%
Lauric acid diethanolamide 2.3% by mass
Disodium edetate 0.15% by mass
Sodium benzoate 0.5% by mass
Sodium chloride 0.8 mass%
Phosphoric acid Appropriate amount of fragrance, Methyl paraben Micro-purified water Remaining amount 100%

(Evaluation of suppression of hair cuticle peeling during stretching)
1. Three hairs were randomly picked up from the hair bundle for evaluation after the treatment described above, and left at 25° C. and a relative humidity of 45% for 3 hours.
Then, a 10 cm to 15 cm site (hair length 5 cm) was cut from the tip of the hair with a razor. A mending tape (manufactured by Scotch) was sandwiched between the both ends of the cut hair at a position of 0.5 cm so that the hair was sandwiched from above and below to form a fixed part.
Then, with respect to the cut out hair, the fixing portion is grasped, the axial direction of the hair is pulled at a speed of 0.1 cm/sec, and the stretching ratio is 25% (the hair in the tape-unattached portion is stretched from 4 cm to 5 cm before stretching). .). The drawn hair was fixed on a slide glass with a two-part adhesive so as not to move, and used as a measurement sample.
2. Using the above measurement sample, the hair surface shape was measured with a laser microscope (VK-8700, manufactured by KEYENCE) (measurement pitch: 0.1 μm), and an inclination other than the hair origin that occurred during sample preparation (slide glass or mending) The surface inclination correction (three points were designated) on the software. After that, the average height Rc value (JIS B0601:2001) of the roughness curve element which is the JIS standard was calculated. As a calculation method, a straight line having a length of 200 μm was drawn in the axial direction on the hair surface whose inclination has been corrected, and the Rc value (μm) on the straight line was calculated by software. This operation was performed a total of 5 times on the surface of the randomly selected hair, and the average value was calculated.
It is suggested that the larger the Rc value is, the rougher the surface shape is, that is, the peeling of the cuticle is promoted, and the smaller this value is, the more the cuticle peeling is suppressed.

From Table 1 and Table 2, in the hair bundles obtained by applying the hair cosmetics obtained in Examples 1 to 5, the increase in Rc value at the time of stretching lift-up is reduced as compared with that of each comparative example. It was excellent in the effect of suppressing the peeling of the cuticle.

Claims (3)

Contains the following components (A) to (C) and water,
Mass ratio of the content of the component said to component (B) (A) (( A) / (B)) is state, and are 20 to 50., pH at 25 ° C. when diluted to 20 times by weight with water There Ru der 4-7, hair cosmetics.
(A) Succinic acid or its salt 1.0 to 3 mass%
(B) Panthenol 0.03-0.1 mass%
(C) Chelating agent 0.04 to 0.5 mass% The hair cosmetic composition according to claim 1, further comprising a component (D) surfactant. A hair treatment method comprising applying the hair cosmetic composition according to claim 1 or 2 to hair.