Hair cosmetic

The hair cosmetic formulation, with its specific blend of surfactants, alcohols, and protein hydrolyzates, addresses the challenges of smoothness, rinsability, non-stickiness, and spreadability, providing enhanced hair care and cosmetic application.

JP2025090227APending Publication Date: 2025-06-17NOF CORP
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Patent Information

Application Number
JP2023205336
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-12-05
Publication Date
2025-06-17

AI Technical Summary

Technical Problem

Existing hair cosmetics often fail to provide simultaneous smoothness during rinsing, quick rinsability, non-stickiness after rinsing, and even spreadability of low-viscosity hair oils.

Method used

A hair cosmetic formulation containing a cationic surfactant, monohydric alcohol, di- or trihydric alcohol, glycerin monoalkyl ether, sugar compound, and a hydrolyzate of protein from leguminous plants, all within specific concentration ranges.

Benefits of technology

The formulation achieves excellent smoothness during rinsing, quick rinsability, non-stickiness after rinsing, and even spreadability of low-viscosity hair oils, enhancing overall hair care and cosmetic application.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a hair cosmetic which exhibits superior hair smoothness during rinsing, allowing rinsing to be completed in a short time; prevents slimy sensation from remaining on hair after rinsing; and enables low-viscosity hair oil to be evenly spread over hair when after applying the hair cosmetic.SOLUTION: A hair cosmetic contains: (A) 0.5 to 7 mass% of a cationic surfactant; (B) 1 to 20 mass% of a monohydric alcohol having 14 to 24 carbon atoms; (C) 1 to 30 mass% of a 2- to 3-hydric alcohol having 3 to 6 carbon atoms; (D) 0.01 to 0.4 mass% of a glycerin monoalkyl ether and / or a glycerin mono-fatty acid ester; and (E) 0.01 to 7 mass% of a saccharide compound.SELECTED DRAWING: None
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Description

Technical Field

[0001] The present invention relates to hair cosmetics.

Background Art

[0002] Hair is exposed to various damage factors in daily life, such as ultraviolet rays from sunlight, heat from a dryer, chemical treatments such as perms and hair colors, and friction from shampooing and brushing. Due to the accumulation of these, damaged hair becomes prone to dryness, has poor combability, and loses its luster. In such circumstances, hair cosmetics such as hair conditioners and hair treatments are used to maintain the health of hair, and these hair cosmetics provide moisture to the hair and exhibit various conditioning effects such as improving combability and luster.

[0003] Hair cosmetics such as hair conditioners are usually applied to the hair after shampooing with shampoo in the bathroom and then rinsed off. In order to enhance the immediate sense of effect, not only the feel of the hair after drying but also the feel of the hair during rinsing is important. For example, Patent Documents 1 and 2 propose hair cosmetics that are excellent in the smoothness of the hair during rinsing. However, with these hair cosmetics, it sometimes takes time to rinse them off, or stickiness may remain after rinsing. Therefore, there is a demand for the development of hair cosmetics that combine the smoothness of the hair during rinsing, good rinsability, and non-stickiness of the hair after rinsing. Patent Document 3 proposes a hair cosmetic that is excellent in the smoothness of the hair during rinsing and does not leave stickiness after rinsing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] For example, by using various hair cosmetics as described in Patent Documents 1 to 3, it is considered that the texture of the hair, such as the neatness and the moist feeling at the time of finishing, becomes good. However, in recent years, for the purpose of further hair damage care and improvement of the touch, after washing and rinsing with the above-mentioned hair cosmetics, or after bathing or styling, etc., the use of outburst treatment has been increasing. As this type of outburst treatment, for example, hair oil is used for the purpose of maintaining the moisture of the hair, giving luster, and protecting the hair from the heat of the dryer. As this type of hair oil, various products are sold according to the differences in individual hair quality and the desired finished touch. For example, there are oils with a heavy touch that are excellent in the feeling of the hair being gathered together, and oils with a light touch that are excellent in the smooth feel of the hair. Here, when applying a hair oil with a high viscosity, since it has a thickness when applied to the hair, it was easy to spread it evenly over the entire hair. However, when using a hair oil with a low viscosity, for example, after washing and rinsing with a hair cosmetic as described in Patent Document 3, etc., it immediately penetrates into the hair and has no thickness, so sufficient spreadability cannot be obtained, and various effects of the hair oil may not necessarily be obtained sufficiently.

[0006] Therefore, an object of the present invention is to provide a hair cosmetic that is excellent in the smoothness of the hair during rinsing, can be rinsed off in a short time, leaves no stickiness on the hair after rinsing, and can be spread evenly without unevenness even when applying a low-viscosity hair oil to the hair after applying a hair cosmetic.

Means for Solving the Problems

[0007] The present inventor has conducted intensive studies in view of the above-mentioned problems, and has found that the above-mentioned problems can be solved by containing a predetermined 5 components at a content within a predetermined range. That is, the present invention relates to the hair cosmetics of the following [1] and [2].

[0008] 〔1〕 (A) Cationic surfactant: 0.5 to 7% by mass, (B) Monohydric alcohol having 14 to 24 carbon atoms: 1 to 20% by mass, (C) Dihydric to trihydric alcohol having 3 to 6 carbon atoms: 1 to 30% by mass, (D) Glycerin monoalkyl ether and / or glycerin mono-fatty acid ester: 0.01 to 0.4% by mass, (E) Sugar compound: 0.01 to 7% by mass. 〔2〕 Further, it contains (F) Hydrolyzate of protein obtained from seeds of leguminous plants and / or its silylated product: 0.0001 to 2% by mass, the hair cosmetic according to item 〔1〕 above

Advantages of the Invention

[0009] According to the hair cosmetic of the present invention, it is excellent in the smoothness of hair during rinsing and can be rinsed off in a short time, leaving no stickiness on the hair after rinsing, and can be evenly applied without unevenness even when applying a low-viscosity hair oil to the hair after applying the hair cosmetic.

Modes for Carrying Out the Invention

[0010] In this specification, the numerical range defined using the symbol "~" shall include the numerical values at both ends (upper limit and lower limit) of "~". For example, "2~4" represents 2 or more and 4 or less. Further, when specifying a concentration or amount, any higher concentration or amount can be associated with any lower concentration or amount. For example, when there are descriptions of "2~10% by mass" and "preferably 4~8% by mass", descriptions of "2~4% by mass", "2~8% by mass", "4~10% by mass", and "8~10% by mass" are also included.

[0011] The hair cosmetic according to an embodiment of the present invention contains the following components (A), (B), (C), (D), and (E) at a content rate within a predetermined range. Hereinafter, each component will be described.

[0012] 〔Component (A)〕 The component (A) applicable to the embodiments of the present invention is not particularly limited as long as it is a cationic surfactant. For example, it includes a cationic surfactant having an alkyl group with 16 to 24 carbon atoms represented by the following formula (1), or a tertiary amide amine type surfactant represented by the following formula (2) which is usually used in the form of a salt by being neutralized with an acid, and the like.

[0013]

Chemical formula

[0014] (In formula (1), R 1 represents an alkyl group having 16 to 24 carbon atoms, R 2 represents an alkyl group having 16 to 24 carbon atoms or an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group, R 3 and R 4 each independently represent an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group, and X - represents an anion.)

[0015]

Chemical formula

[0016] (In formula (2), R 5 represents an alkyl group having 15 to 23 carbon atoms, and m represents an integer of 2 to 4.)

[0017] The cationic surfactant having an alkyl group with 16 to 24 carbon atoms represented by formula (1) is described in detail as follows.

[0018] R 1 in formula (1) may be an alkyl group having 16 to 24 carbon atoms, but an alkyl group having 18 to 22 carbon atoms is preferred. The structure of the alkyl group may be linear or may have a branched chain, but a linear structure is preferred. Specific examples of the alkyl group include a cetyl group, a stearyl group, a behenyl group, and the like. R 1 is more preferably a linear alkyl group having 18 to 22 carbon atoms.

[0019] R in formula (1) 2 may be an alkyl group having 16 to 24 carbon atoms or an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group. When R 2 is an alkyl group having 16 to 24 carbon atoms, R 1 preferably has the same structure as R 2 When R is an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group, the alkyl group may or may not be substituted by a hydroxy group, but an unsubstituted alkyl group is preferred. The number of substitutions when substituted by a hydroxy group is not particularly limited.

[0020] R in formula (1) 3 and R 4 each may independently be an alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group. The alkyl group preferably has the same structure as in the case of R 2 .

[0021] R in formula (1) 2 to R 4 Specific examples of the alkyl group having 1 to 3 carbon atoms which may be substituted by a hydroxy group include a methyl group, an ethyl group, a propyl group, a hydroxymethyl group, a hydroxyethyl group, etc. Among them, a methyl group and an ethyl group are preferred.

[0022] X in formula (1) -It may be an anion, for example, halide ions such as chloride ions and bromide ions; alkyl sulfate ions having 1 to 3 carbon atoms such as methosulfate ions and ethosulfate ions; alkyl phosphate ions having 1 to 3 carbon atoms such as methophosphate ions and ethophosphate ions; alkyl carbonate ions having 1 to 3 carbon atoms such as methocarbonate ions; acyl ions such as acetate ions, citrate ions, lactate ions, and glycolate ions; nitrate ions; sulfate ions and the like. Among them, chloride ions, bromide ions, methosulfate ions, ethosulfate ions, methophosphate ions, ethophosphate ions or methocarbonate ions are preferred, and chloride ions or bromide ions are more preferred.

[0023] The tertiary amide amine type surfactant represented by the formula (2) will be described as follows.

[0024] R in the formula (2) 5 may be an alkyl group having 15 to 23 carbon atoms, but an alkyl group having 17 to 21 carbon atoms is preferred. The structure of the alkyl group may be linear or may have a branched chain, but a linear structure is preferred. Specific alkyl groups include a cetyl group, a stearyl group, a behenyl group and the like. R 5 is more preferably a linear alkyl group having 17 to 21 carbon atoms.

[0025] m in the formula (2) may be an integer of 2 to 4 and is not particularly limited.

[0026] Examples of the surfactants represented by the specific formulas (1) and (2) include stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, stearyl trimethyl ammonium bromide, behenyl trimethyl ammonium bromide, distearyl dimethyl ammonium chloride, stearamidopropyl dimethylamine, behenamidopropyl dimethylamine, stearamidoethyl diethylamine, behenamidoethyl diethylamine, and the like. Among them, stearyl trimethyl ammonium chloride, behenyl trimethyl ammonium chloride, stearamidopropyl dimethylamine, and behenamidopropyl dimethylamine are preferable in terms of the smoothness of hair during rinsing, and stearyl trimethyl ammonium chloride and stearamidopropyl dimethylamine are particularly preferable.

[0027] The cationic surfactants represented by formulas (1) and (2) can be produced by known methods. Commercially available products may also be used.

[0028] Component (A) may be used alone or in combination of two or more.

[0029] The content of component (A) is 0.5 to 7% by mass, preferably 0.7 to 5% by mass, and more preferably 1 to 4% by mass based on the total amount of the hair cosmetic. When the content of component (A) is less than 0.5% by mass, the smoothness of the hair during rinsing may be insufficient. When the content of component (A) exceeds 7% by mass, the rinsability and the non-sliminess of the hair after rinsing may be insufficient.

[0030] [Component (B)] The component (B) applicable to the embodiments of the present invention may be a monohydric alcohol having 14 to 24 carbon atoms. The structure of the alcohol is not particularly limited, but those in which one hydrogen atom of an aliphatic hydrocarbon is substituted with a hydroxy group are preferred. The structure of the aliphatic hydrocarbon group in such a monohydric alcohol may be linear or branched, but a linear structure is preferred. Further, the aliphatic hydrocarbon group may be a saturated aliphatic hydrocarbon group or an unsaturated aliphatic hydrocarbon group, but a saturated aliphatic hydrocarbon group is preferred. Particularly preferred is a monohydric alcohol having a linear and saturated hydrocarbon group. Specifically, myristyl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, etc. may be mentioned.

[0031] Component (B) may be used alone or in combination of two or more.

[0032] The content of component (B) is 1 to 20% by mass, preferably 2 to 17% by mass, more preferably 3 to 15% by mass with respect to the total amount of the hair cosmetic. When the content of component (B) is less than 1% by mass, the smoothness of the hair during rinsing may be insufficient. When the content of component (B) exceeds 20% by mass, the rinsability may be insufficient.

[0033] [Component (C)] The component (C) applicable to the embodiments of the present invention may be a di- or trihydric alcohol having 3 to 6 carbon atoms. That is, it may be one or more selected from dihydric alcohols having 3 to 6 carbon atoms and trihydric alcohols having 3 to 6 carbon atoms. Such alcohols are not particularly limited as long as they are usually used in cosmetics, and examples include glycols having 3 to 6 carbon atoms, glycerin, etc.

[0034] Examples of glycols include propylene glycol, dipropylene glycol, 1,3-propanediol, isoprene glycol, 1,3-butylene glycol, 1,2-pentanediol, 1,2-hexanediol, etc.

[0035] Among these, glycerin, 1,3 - propanediol, and 1,3 - butylene glycol are preferred.

[0036] The component (C) may be used alone or in combination of two or more. In particular, it is preferably used in combination of two or more, and in that case, the blending ratio (the most abundant component) / (the least abundant component) is preferably 10 or less.

[0037] The content of the component (C) is 1 to 30% by mass, preferably 1.5 to 25% by mass, and more preferably 2 to 20% by mass with respect to the total amount of the hair cosmetic. When the content of the component (C) is less than 1% by mass, the smoothness of the hair during rinsing may be insufficient. When the content of the component (C) exceeds 30% by mass, the rinsability and the non - sliminess of the hair during rinsing may be insufficient.

[0038] [Component (D)] The component (D) applicable to the embodiments of the present invention may be glycerin monoalkyl ether and / or glycerin mono fatty acid ester. That is, it may be one or more selected from glycerin monoalkyl ether and glycerin mono fatty acid ester.

[0039] The glycerin monoalkyl ether is not particularly limited as long as it is usually used in cosmetics, but a monoether of an alcohol having 6 to 12 carbon atoms and glycerin is preferred. Specifically, glycerin monohexyl ether, glycerin mono 2 - ethylhexyl ether, glycerin monooctyl ether, etc. may be mentioned, and among them, glycerin mono 2 - ethylhexyl ether is preferred.

[0040] The glycerin mono fatty acid ester is not particularly limited as long as it is usually used in cosmetics, but a monoester of a fatty acid having 6 to 12 carbon atoms and glycerin is preferred. Specifically, glycerin monocaprylate, glycerin monocaprate, glycerin monolaurate, etc. may be mentioned, and among them, glycerin monocaprylate is preferred.

[0041] (D) component may be glycerin monoalkyl ether and / or glycerin mono-fatty acid ester, preferably glycerin monoalkyl ether.

[0042] (D) component may be used alone or in combination of two or more.

[0043] (D) component content is 0.01-0.4 mass% based on the total amount of the hair cosmetic, preferably 0.05 mass%-0.3 mass%, more preferably 0.1 mass%-0.2 mass%. When the content of (D) component is less than 0.01 mass%, the smoothness of the hair during rinsing and the spreadability of the low-viscosity hair oil on the hair may be insufficient. When the content of (D) component exceeds 0.4 mass%, the non-greasy feeling of the hair after rinsing may be insufficient.

[0044] [(E) component] The (E) component applicable to the embodiments of the present invention may be a sugar compound, for example, sugar, sugar alcohol, and their derivatives. Examples of sugar include monosaccharides, disaccharides, and oligosaccharides in which three or more monosaccharides are linked by glycosidic bonds. Examples of monosaccharides include glucose, fructose, galactose, xylose, etc., and examples of disaccharides include sucrose, maltose, lactose, trehalose, etc. Examples of oligosaccharides include fructooligosaccharide, raffinose, cyclodextrin, glycosyltrehalose, etc.

[0045] Sugar alcohol is a reduced carbonyl group of sugar, specifically, sorbitol, xylitol, maltitol, hydrolyzed hydrogenated starch, etc.

[0046] Derivatives of sugars and sugar alcohols include compounds in which the hydroxyl groups and other functional groups of sugars and sugar alcohols are substituted with other functional groups, or reaction products of sugars and sugar alcohols with other compounds, etc. Specifically, glucosamine, glucoside, etc. are included. Examples of glucosamine include N-acetylglucosamine, etc. Examples of glucoside include glyceryl glucoside, etc.

[0047] Among these sugar compounds, sugars and their derivatives are preferred. As the sugar, oligosaccharides are preferred. As the derivative of the sugar, glucoside is preferred. Also, among these sugar compounds, sorbitol, maltitol, glycosyl trehalose, glyceryl glucoside are preferred, and glycosyl trehalose and glyceryl glucoside are particularly preferred.

[0048] Component (E) may be used alone or in combination of two or more.

[0049] The content of component (E) is 0.01 to 7% by mass, preferably 0.05 to 5% by mass, more preferably 0.05 to 3% by mass based on the total amount of the hair cosmetic. When the content of component (E) is less than 0.01% by mass, the spreadability of the hair oil with low viscosity on the hair may be insufficient. When the content of component (E) exceeds 7% by mass, the rinsability and the non-sliminess of the hair during rinsing may be insufficient.

[0050] [Component (F)] In the hair cosmetic according to an embodiment of the present invention, a hydrolyzate of a protein obtained from seeds of a leguminous plant and / or its silylated product may be included as the component (F). By containing this component (F), it is possible to further improve the smoothness of the hair during shampooing and the ease of spreading of a hair oil with low viscosity on the hair. The hydrolyzate of the protein derived from the seeds of a leguminous plant is not particularly limited, but specifically, hydrolyzed pea protein, hydrolyzed soybean protein, etc. may be mentioned. Further, the silylated product of the hydrolyzate of the protein derived from the seeds of a leguminous plant is not particularly limited, but specifically, (dihydroxymethylsilylpropoxy) hydroxypropyl hydrolyzed soybean protein may be mentioned. Among these, the hydrolyzate of the protein derived from the seeds of a leguminous plant is preferable, and hydrolyzed pea protein is particularly preferable.

[0051] (F) component may be used alone or in combination of two or more.

[0052] The content of the component (F) is preferably 0.0001 to 2% by mass, more preferably 0.001 to 1% by mass, and still more preferably 0.005 to 0.5% by mass based on the total amount of the hair cosmetic.

[0053] [Other components] In the hair cosmetic according to an embodiment of the present invention, other components other than the above components (A) to (F) can be contained within a range that does not inhibit the effects of the present invention. Other components are those commonly used in cosmetics, and examples include higher fatty acids and their triglycerides, ester oils, animal and vegetable fats and oils, vitamins, sequestering agents, thickeners, dyes, pigments, fragrances, pH adjusters, solvents such as water, amino acids, plant extracts, etc.

[0054] Examples of the ester oil include ester oils having 8 to 40 carbon atoms in total, preferably esters of fatty acids having 8 to 20 carbon atoms in total and alcohols having 1 to 20 carbon atoms. Among them, cetyl ethylhexanoate, stearyl stearate, and oleyl oleate are preferable.

[0055] Examples of animal and vegetable fats and oils include, for example, horse oil, peony oil, deer fat, olive oil (olive fruit oil), camellia oil (camellia seed oil), shea butter, almond oil, safflower oil, sunflower oil (sunflower seed oil), soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado oil, macadamia nut oil (macadamia seed oil), castor oil, coconut oil, palm oil, evening primrose oil, cocoa butter, squalane, and the like.

[0056] Examples of vitamins include, for example, vitamin A or its derivatives, vitamin B6 hydrochloride, vitamin B6 tripalmitate, vitamin B6 dioctanoate, vitamin B2 or its derivatives, vitamin B12, vitamin B15 or its derivatives, and other B vitamins, α-tocopherol, β-tocopherol, γ-tocopherol, vitamin E acetate and other vitamin E compounds, vitamin D compounds, vitamin H, pantothenic acid, pantethine, pyrroloquinoline quinone, and the like.

[0057] Examples of metal ion sequestering agents include, for example, ethylenediaminetetraacetic acid (EDTA; edetic acid) and its salts, hydroxyethylethylenediaminetriacetic acid (HEDTA) and its salts, diethylenetriaminepentaacetic acid and its salts, and hydroxyethanediphosphonic acid (HEDP; etidronic acid) and its salts.

[0058] Examples of the thickener include guar gum, quince seed, carrageenan, galactan, gum arabic, pectin, mannan, starch, xanthan gum, curdlan, methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose, methyl hydroxypropyl cellulose, chondroitin sulfate, dermatan sulfate, glycogen, heparan sulfate, hyaluronic acid, sodium hyaluronate, tragacanth gum, keratan sulfate, chondroitin, mucitin sulfate, hydroxyethyl guar gum, carboxymethyl guar gum, dextran, dextrin palmitate, locust bean gum, succinoglucan, caronin acid, chitin, chitosan, carboxymethyl chitin, agar, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyvinyl polymer, sodium polyacrylate, polyethylene glycol, bentonite and the like.

[0059] The hair cosmetic according to the embodiment of the present invention preferably has a pH of 4 to 7. In this case, a higher effect can be obtained and it can also have excellent stability over time. The pH can be adjusted with a pH adjuster as needed. Examples of such a pH adjuster include citric acid, sodium citrate, lactic acid and the like.

[0060] The hair cosmetic according to the embodiment of the present invention can be used in hair conditioners, hair treatments, hair rinses, hair masks, hair milks, hair creams and the like. Also, according to each of these uses, they can be produced according to the usual methods respectively.

Examples

[0061] The present invention will be described in more detail with reference to the following examples and comparative examples, but the present invention is not limited to the following examples.

[0062] 〔Examples 1 to 9, Comparative Examples 1 to 5〕 By blending the respective components in the parts by mass shown in Tables 1 and 2, hair cosmetics of Examples 1 to 9 and Comparative Examples 1 to 5 were prepared. The pH of the hair cosmetics was adjusted to 4.0 to 5.0 using citric acid or lactic acid and sodium citrate. Each hair cosmetic was evaluated by the following evaluation method. The unit of each numerical value in Tables 1 and 2 is mass%.

[0063] (1) Smoothness of hair during rinsing Twenty female panelists (aged 25 to 40) were used. 5 g of each hair cosmetic was applied to wet hair over the entire head. Then, the smoothness of the hair when rinsed off with hot water was evaluated as follows and scored. And based on the total score, the following four-level evaluation from "◎" to "×" was performed. For the smoothness of hair during rinsing, a hair cosmetic with a score of 20 or more and 29 or less was determined to be an excellent hair cosmetic, and a hair cosmetic with a score of 30 or more was determined to be a particularly excellent hair cosmetic.

[0064] 2 points: Felt that the hair was smooth. 1 point: Felt that the hair was slightly smooth. 0 point: Felt that the hair was not smooth.

[0065] ◎: Total score is 30 or more ○: Total score is 20 or more and 29 or less △: Total score is 10 or more and 19 or less ×: Total score is 9 or less

[0066] (2) Ease of rinsing (1) At the same time as the evaluation in (1), the ease of rinsing when the applied hair cosmetic was rinsed off with hot water was evaluated as follows and scored. And based on the total score, the following four-level evaluation from "◎" to "×" was performed. For the ease of rinsing, a hair cosmetic with a score of 20 or more and 29 or less was determined to be an excellent hair cosmetic, and a hair cosmetic with a score of 30 or more was determined to be a particularly excellent hair cosmetic.

[0067] 2 points: Felt that the sliminess dropped off quickly. 1 point: Felt that the sliminess dropped off slightly quickly. 0 point: Felt that the sliminess dropped off slowly.

[0068] ◎: Total score of evaluation points is 30 or more ○: Total score of evaluation points is 20 or more and 29 or less △: Total score of evaluation points is 10 or more and 19 or less ×: Total score of evaluation points is 9 or less

[0069] (3) Smoothness of hair after rinsing (1) and (2) After the evaluation, the smoothness of the hair was evaluated and scored as follows. Then, based on the total score of the evaluation points, the following four-level evaluation of "◎" to "×" was performed, and it was determined that a hair cosmetic with a smoothness of 20 or more and 29 or less after rinsing was an excellent hair cosmetic, and a hair cosmetic with a score of 30 or more was a particularly excellent hair cosmetic.

[0070] 2 points: Felt that the hair was not sticky 1 point: Felt that the hair was slightly sticky 0 point: Felt that the hair was sticky

[0071] ◎: Total score of evaluation points is 30 or more ○: Total score of evaluation points is 20 or more and 29 or less △: Total score of evaluation points is 10 or more and 19 or less ×: Total score of evaluation points is 9 or less

[0072] (4) Ease of spreading a low-viscosity hair oil on hair (3) After the evaluation, the ease of spreading when applying the hair oil was evaluated and scored as follows. Then, based on the total score of the evaluation points, the following four-level evaluation of "◎" to "×" was performed, and it was determined that a hair cosmetic with an ease of spreading a low-viscosity hair oil on hair of 20 or more and 29 or less was an excellent hair cosmetic, and a hair cosmetic with a score of 30 or more was a particularly excellent hair cosmetic. For the evaluation, as the low-viscosity hair oil, Lucy Dell Oil Treatment #EX Hair Oil, manufactured by Mandamu Co., Ltd. was used, and the ease of spreading was evaluated when an appropriate amount (Short: 1 push, Medium: 2 pushes, Long: 3 pushes) was applied to the hair from which moisture had been wiped off with a towel according to the length of the hair.

[0073] 2 points: I felt that it was easy to spread the hair oil evenly over the entire hair. 1 point: I felt that it was somewhat easy to spread the hair oil evenly over the entire hair. 0 point: I felt that it was difficult to spread the hair oil evenly over the entire hair.

[0074] ◎: The total score is 30 points or more. ○: The total score is 20 points or more and 29 points or less. △: The total score is 10 points or more and 19 points or less. ×: The total score is 9 points or less.

[0075]

Table 1

[0076]

Table 2

[0077] As the components (A) to (F) shown in Tables 1 to 4, the following were used. 〔Component (A)〕 · Stearyl trimethyl ammonium chloride (Cation AB - 250AQ, manufactured by NOF Corporation) · Stearamidopropyl dimethylamine (Katinal MPAS, manufactured by Toho Chemical Industry Co., Ltd.) 〔Component (B)〕 · Cetyl alcohol (Calcohol 6098, manufactured by Kao Corporation) · Stearyl alcohol (Calcohol 8098, manufactured by Kao Corporation) · Myristyl alcohol (NAA - 43, manufactured by NOF Corporation) · Behenyl alcohol (NAA - 422, manufactured by NOF Corporation) 〔Component (C)〕 · Glycerin (RG - S, manufactured by NOF Corporation) · 1,3 - Butylene glycol (1,3 - Butylene glycol, manufactured by Daicel Corporation) · 1,3 - propanediol (Zemea select propanediol, manufactured by DuPont Tate&Lyle Bio Products) [Component (D)] · Glycerin mono 2 - ethylhexyl ether (Glymoist EH, manufactured by NOF Corporation) · Glycerin monocapric acid ester (Sunsoft No.760 - C, manufactured by Sun Chemical Corporation) [Component (E)] · Glycosyl trehalose, hydrolyzed hydrogenated starch (Toruneru (registered trademark), manufactured by Hayashibara Co., Ltd.) · Glyceryl glucoside (COSARTE - 2G, manufactured by Toyo Seito Co., Ltd.) [Component (F)] · Hydrolyzed pea protein (Promois WJ - SP, manufactured by Showa Kasei Kogyo Co., Ltd.) · (Dihydroxymethylsilylpropoxy) hydroxypropyl hydrolyzed soybean protein (Promois WS - HSIGPD, manufactured by Showa Kasei Kogyo Co., Ltd.)

[0078] As shown in Table 1, each of the hair cosmetics of Examples 1 to 9 was evaluated as a hair cosmetic excellent in the smoothness of hair during rinsing, good rinsability, non - stickiness of hair after rinsing, and ease of spreading a low - viscosity hair oil on hair. On the other hand, for the hair cosmetics of Comparative Examples 1 to 5 that do not satisfy any of the essential requirements of the present invention, as follows, none were found to have sufficient effectiveness in all evaluation items. The hair cosmetic of Comparative Example 1 in which the content rate of Component (A) is outside the predetermined range was evaluated as having insufficient good rinsability and non - stickiness of hair after rinsing. The hair cosmetic of Comparative Example 2 in which the content rate of Component (B) is outside the predetermined range was evaluated as having insufficient good rinsability. The hair cosmetic of Comparative Example 3 that does not contain Component (C) was evaluated as having insufficient smoothness of hair during rinsing. The hair cosmetic of Comparative Example 4 that does not contain Component (D) was evaluated as having insufficient smoothness of hair during rinsing and ease of spreading a low - viscosity hair oil on hair. The hair cosmetic of Comparative Example 5 that does not contain the (E) component was evaluated as having insufficient ease of spreading of the hair oil with low viscosity on the hair.

[0079] Hereinafter, other formulation examples of the hair cosmetic according to the embodiment of the present invention will be given.

[0080] 〔Example 10〕(Formulation example) By blending each component in the parts by mass shown in Table 3, the hair cosmetic of Example 10 was produced.

[0081]

Table 3

[0082] 〔Example 11〕(Formulation example) By blending each component in the parts by mass shown in Table 4, the hair cosmetic of Example 11 was produced.

[0083]

Table 4

[0084] Using the hair cosmetics obtained in Examples 10 and 11, in the same manner as described above, the smoothness of the hair during rinsing, the ease of rinsing, the non-stickiness of the hair after rinsing, and the ease of spreading of the hair oil with low viscosity on the hair were evaluated. As a result, all of them had excellent characteristics as shown in Tables 3 and 4 and good results were obtained.

Claims

1. (A) 0.5 to 7% by mass of a cationic surfactant, (B) 1 to 20% by mass of a monohydric alcohol having 14 to 24 carbon atoms, (C) 1 to 30% by mass of a di- or trihydric alcohol having 3 to 6 carbon atoms, (D) 0.01 to 0.4% by mass of glycerin monoalkyl ether and / or glycerin monofatty acid ester, (E) A hair cosmetic containing 0.01 to 7% by mass of a sugar compound.

2. The hair cosmetic according to claim 1, further containing (F) 0.0001 to 2% by mass of a hydrolyzate of a protein obtained from seeds of a leguminous plant and / or its silylated product.

Citation Information

Patent Citations

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