Hair composition

Abstract

To provide a hair composition containing stearamidopropyl dimethylamine and having excellent preparation stability.SOLUTION: The present invention provides a hair composition containing (a) stearamidopropyl dimethylamine, (b) (b1) cetyl alcohol and (b2) at least one higher alcohol selected from the group consisting of hydrogenated rapeseed oil alcohol, stearyl alcohol, and behenyl alcohol, (c) lactic acid and / or a salt thereof, and (d) at least one liquid oil selected from the group consisting of triester and monoester, with a mass ratio of (b) / (d) of 1.3 or more.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a hair composition containing stearamidopropyldimethylamine and having excellent formulation stability.

Background Art

[0002] Hair is damaged by chemical treatments such as hair coloring, physical treatments such as shampooing and the heat of a dryer. It is well known that when hair is damaged, negative factors such as frizz, poor cohesion, and loss of luster occur from an aesthetic point of view. Therefore, it has been widely used to care for damaged hair and to give the so-called conditioning effect to hair for the purpose of imparting smoothness and a moist feeling to hair. Conditioning agents usually contain silicones such as dimethicone and amodimethicone for the purpose of imparting a damage care effect, excellent smoothness, and slipperiness to hair. Since silicone has characteristics such as friction reduction ability and spreadability, it is widely used. However, there are reports that when conditioning agents containing these silicones are used for a long time, silicones accumulate on the hair and form a film between the hair surface and the cuticle (Patent Document 1). On the other hand, in conditioning agents that do not contain silicones, for the purpose of removing the oil that protects the hair surface and replenishing the hair with oil to improve the feel of the hair, generally cationic surfactants such as stearyltrimethylammonium salt and distearyldimethylammonium salt and higher alcohols are used as the main components, and various oils are added and emulsified to impart smoothness and a moist feeling to the hair and to improve the surface state of the hair (Patent Documents 2 to 3). However, in order to give sufficient cohesion to the hair, the amount of oil blended in the product tends to increase (Patent Document 1), and there is a concern that the emulsion will collapse over time.

[0003] Cationic surfactants are broadly classified into amine salt type and quaternary ammonium salt type, and amine salt type is generally said to have a milder effect on the skin and mucous membranes compared to quaternary ammonium salt. Among the amine salt type, amideamine compounds have recently been found to impart smoothness and flexibility to hair, and conditioning agents containing amideamine compounds or their salts have been proposed (Patent Documents 4-5). Furthermore, it is known that by incorporating higher alcohols, the hair can be restored to its smooth texture before treatment (Patent Document 6). Stearamidopropyldimethylamine is a plant-derived amideamine compound obtained from stearic acid and dimethylaminopropylamine.

[0004] Higher alcohols are used as emulsifying stabilizers and foaming agents in creams, lotions, and shampoos (Patent Documents 7-8), and formulations of multiple higher alcohols, such as cetostearyl alcohol and hydrogenated rapeseed alcohol, combined with water have also been launched on the market. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2010-24167 [Patent Document 2] Japanese Patent Application Publication No. 6-172131 [Patent Document 3] Japanese Patent Publication No. 2006-265205 [Patent Document 4] Japanese Patent Application Publication No. 5-271035 [Patent Document 5] Japanese Patent Publication No. 2000-53537 [Patent Document 6] Japanese Patent Publication No. 2006-290796 [Patent Document 7] Japanese Patent Application Publication No. 9-169622 [Patent Document 8] Special Publication No. 2008-500459 [Overview of the project] [Problems that the invention aims to solve]

[0006] The present inventors found that when they prepared and stored a hair composition containing stearamidopropyldimethylamine, the formulation separated over time, resulting in poor formulation stability. Therefore, the object of the present invention is to provide a hair composition containing stearamidopropyldimethylamine that exhibits excellent formulation stability. [Means for solving the problem]

[0007] The inventors of the present invention have conducted extensive research to solve the above problems and have found that by including a specific higher alcohol, a specific acid and / or its salt, and a specific liquid oil, and blending the higher alcohol and liquid oil in a specific ratio, the above problems can be solved, and have completed the present invention.

[0008] In other words, the present invention is (1) A hair composition characterized by containing (a) stearamidopropyl dimethylamine, (b) (b1) cetyl alcohol, and (b2) at least one higher alcohol selected from the group consisting of hydrogenated rapeseed alcohol, stearyl alcohol, and behenyl alcohol, (c) lactic acid and / or its salt, and (d) at least one liquid oil selected from the group consisting of triesters and monoesters, wherein the mass ratio of (b1+b2) / (d) is 1.3 or more. (2) The hair composition according to (1), wherein the liquid oil of (d) is at least one selected from the group consisting of tri(caprylic / capric acid) glyceryl, jojoba oil, isopropyl myristate, ethylhexyl palmitate, and cetyl ethylhexanoate. (3) A hair composition according to (1) or (2) characterized by not containing silicones, (4) A hair composition according to any one of (1) to (3), which is a hair shampoo, hair rinse, hair treatment, or hair conditioning agent. That is the case. [Effects of the Invention]

[0009] The present invention makes it possible to provide a hair composition containing stearamidopropyl dimethylamine in which separation of the formulation over time is suppressed. [Modes for carrying out the invention]

[0010] Each component used in the hair composition of the present invention may be of a quality commonly used in pharmaceuticals, quasi-drugs, or cosmetics.

[0011] The content of stearamidopropyldimethylamine in the hair composition of the present invention is preferably 0.01 to 10 w / w%, and more preferably 0.1 to 7 w / w%.

[0012] The hair composition of the present invention must contain cetyl alcohol, a higher alcohol, in terms of its effects and feel. In addition to cetyl alcohol, it is necessary to include at least one higher alcohol selected from hydrogenated rapeseed alcohol, stearyl alcohol, and behenyl alcohol. The cetyl alcohol content in the hair composition of the present invention is preferably 0.05 to 20 w / w%, and more preferably 0.5 to 10 w / w%. The content of hydrogenated rapeseed alcohol, stearyl alcohol, or behenyl alcohol is preferably 0.05 to 20 w / w%, and more preferably 0.5 to 10 w / w%. The total amount of cetanol, hydrogenated rapeseed alcohol, stearyl alcohol, and behenyl alcohol in the hair composition of the present invention is preferably 0.1 to 40 w / w%, and more preferably 1 to 20 w / w%.

[0013] The content of lactic acid and / or its salt in the hair composition of the present invention is preferably 0.05 to 5 w / w%, and more preferably 0.1 to 2.5 w / w%, from the viewpoint of the effects of the present invention. Furthermore, since the inclusion of citric acid and / or its salt in the composition of the present invention may cause separation of the formulation, it is preferable that the hair composition of the present invention does not contain citric acid and / or its salt.

[0014] The liquid oil of the present invention refers to a triester and / or a monoester. Among these, it is preferable to use one or a combination of two or more selected from glyceryl tri(capryloyl caprate), jojoba oil, isopropyl myristate, ethylhexyl palmitate, and cetyl ethylhexanoate. The content of the liquid oil in the hair composition of the present invention is preferably 0.01 to 30 w / w% from the viewpoint of the effects of the present invention, and more preferably 0.1 to 15 w / w%.

[0015] In addition, from the viewpoint of the effects of the present invention, the content ratio of the higher alcohol and the liquid oil of the present invention needs to have a mass ratio of higher alcohol / liquid oil of 1.3 or more, and from the viewpoint of the feeling of use, the upper limit value is preferably less than 4.0.

[0016] The hair composition of the present invention can further contain polyhydric alcohols and water as needed. Examples of polyhydric alcohols include 1,3-butylene glycol, dipropylene glycol, propylene glycol, glycerin, etc., and one or a combination of two or more of these may be used. The blending amount of the polyhydric alcohol is preferably 2 to 50 w / w% in the total composition, and more preferably less than 2 to 30 w / w%. The blending amount of water is preferably 2 to 90 w / w%, and more preferably 5 to 85 w / w%.

[0017] The hair composition of the present invention can further contain various surfactants other than stearamidopropyldimethylamine as needed. Surfactants other than stearamidopropyldimethylamine may be used singly or in combination of two or more. The blending amount of the surfactant is preferably 0.001 to 75 w / w% in the total composition, and more preferably less than 0.01 to 40 w / w%.

[0018] In addition to the above-described components, the hair composition of the present invention can contain various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., as long as the effects of the present invention are not impaired. For example, excipients, fragrances, cooling agents (menthol, peppermint oil, camphor, etc.), anti-inflammatory agents (guaiiazulene, salicylic acid, glycyrrhizinate, glycyrrhetinic acid, etc.), bactericides (chlorhexidine gluconate, isopropylmethylphenol, quaternary ammonium salts, piroctone olamine, etc.), preservatives (parabens (methylparaben, butylparaben, propylparaben, etc.), benzoic acid or its salts, sodium dehydroacetate, hinokitiol, etc.), moisturizing agents (hyaluronic acid or its salts, chondroitin sulfate, etc.), extracts of various animals and plants (Japanese yew, buttonwood, licorice, bupleurum, Chinese aconite, loquat, mugwort, comfrey, ashitaba, saffron, ginseng, rosemary, sage, mokko, seimokko, hops, placenta, saw palmetto, pumpkin seed, etc.), vitamins (retinol acetate, ascorbic acid, thiamine nitrate, cyanocobalamin, biotin, riboflavin, etc.), antioxidants (dibutylhydroxytoluene, sodium pyrosulfite, tocopherol, sodium edetate, ascorbic acid, isopropyl gallate, etc.), solubilizing agents (various vegetable oils, various animal oils, alkyl glyceryl ethers, hydrocarbons, etc.), metabolic activators, gelling agents (water-soluble polymers, etc.), and adhesives.

[0019] Also, the hair composition of the present invention preferably does not contain silicones.

[0020] There are no particular restrictions on the addition amounts of these selected components, and they can be determined experimentally while considering the usability, etc.

[0021] The hair composition of the present invention can be used for applications such as cosmetics, quasi-drugs, pharmaceuticals, etc. Also, the hair composition of the present invention is preferably used as a hair shampoo, hair rinse, hair treatment agent, hair conditioning agent, etc., and more preferably, it is a hair conditioning agent.

[0022] The hair composition of the present invention is prepared by a conventional method, containing the above-mentioned components.

[0023] The present invention will be described in more detail below with reference to examples, comparative examples, and test examples, but the present invention is not limited in any way by these examples, etc. [Examples]

[0024] Hair compositions for Examples 1-9 and Comparative Examples 1-3 were prepared by conventional methods according to the formulations shown in Table 1 below. Specifically, stearamidopropyldimethylamine, higher alcohols, liquid oil, polyhydric alcohols, and l-menthol were mixed in a water bath at approximately 80°C. Then, acid, polyquaternium-10, salicylic acid, preservatives, and purified water were added and emulsified using a homomixer. After that, the mixture was cooled to approximately 50°C, and dipotassium glycyrrhizinate, fragrance, and purified water were added and mixed to obtain a hair composition.

[0025] (Example 1) A hair composition was obtained by mixing 4g hydrogenated rapeseed alcohol, 4g cetyl alcohol, 3g stearamidopropyl dimethylamine, 6g caprylic / capric triglyceride, 0.65g lactic acid, 0.1g polyquaternium-10, 4g 1,3-butylene glycol, 2g concentrated glycerin, 0.1g salicylic acid, 0.1g dipotassium glycyrrhizate, 0.5g l-menthol, 0.2g preservative, 0.4g fragrance, and purified water to a total volume of 100g.

[0026] (Example 2) A hair composition was obtained by mixing 4g hydrogenated rapeseed alcohol, 4g cetyl alcohol, 3g stearamidopropyl dimethylamine, 6g caprylic / capric triglyceride, 0.9g lactic acid, 0.1g polyquaternium-10, 6g 1,3-butylene glycol, 0.1g salicylic acid, 0.1g dipotassium glycyrrhizate, 0.6g l-menthol, 0.2g preservative, and purified water to a total volume of 100g.

[0027] (Example 3) A hair composition was obtained by mixing 3.5g of hydrogenated rapeseed alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 2g of caprylic / capric triglyceride, 0.35g of lactic acid, 2g of liquid paraffin, 0.1g of polyquaternium-10, 4g of 1,3-butylene glycol, 2g of concentrated glycerin, 0.1g of salicylic acid, 0.1g of dipotassium glycyrrhizate, 0.5g of l-menthol, 0.2g of preservative, 0.4g of fragrance, and purified water to a total volume of 100g.

[0028] (Example 4) A hair composition was obtained by mixing 4g hydrogenated rapeseed alcohol, 4g cetyl alcohol, 3g stearamidopropyl dimethylamine, 3g caprylic / capric triglyceride, 3g liquid paraffin, 0.65g lactic acid, 0.1g polyquaternium-10, 4g 1,3-butylene glycol, 2g concentrated glycerin, 0.1g salicylic acid, 0.1g dipotassium glycyrrhizate, 0.5g l-menthol, 0.2g preservative, 0.4g fragrance, and purified water to a total volume of 100g.

[0029] (Example 5) A hair composition was obtained by mixing 3.5g of hydrogenated rapeseed alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 2g of caprylic / capric triglyceride, 0.9g of lactic acid, 0.1g of polyquaternium-10, 4g of 1,3-butylene glycol, 2g of concentrated glycerin, and purified water to a total volume of 100g.

[0030] (Example 6) A hair composition was obtained by mixing 3.5g of hydrogenated rapeseed alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 4g of isopropyl myristate, 0.9g of lactic acid, 0.1g of polyquaternium-10, 4g of 1,3-butylene glycol, 2g of concentrated glycerin, and purified water to a total volume of 100g.

[0031] (Example 7) A hair composition was obtained by mixing 3.5g of hydrogenated rapeseed alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 4g of jojoba oil, 0.9g of lactic acid, 0.1g of polyquaternium-10, 4g of 1,3-butylene glycol, 2g of concentrated glycerin, and purified water to a total volume of 100g.

[0032] (Example 8) A hair composition was obtained by mixing 3.5g of behenyl alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 4g of caprylic / capric triglyceride, 0.9g of lactic acid, 0.1g of polyquaternium-10, 6g of 1,3-butylene glycol, and purified water to a total volume of 100g.

[0033] (Example 9) A hair composition was obtained by mixing 3.5g of stearyl alcohol, 3.5g of cetyl alcohol, 3.5g of stearamidopropyl dimethylamine, 4g of caprylic / capric triglyceride, 0.9g of lactic acid, 0.1g of polyquaternium-10, 6g of 1,3-butylene glycol, and purified water to a total volume of 100g.

[0034] (Example 10) A hair composition was obtained by mixing 3g hydrogenated rapeseed alcohol, 0.5g cetyl alcohol, 3g stearyl alcohol, 2g stearamidopropyl dimethylamine, 5g ethylhexyl palmitate, 1.0g lactic acid, 0.3g guar hydroxypropyltrimonium chloride, 4g 1,3-butylene glycol, 2g concentrated glycerin, and purified water to a total volume of 100g.

[0035] (Example 11) A hair composition was obtained by mixing 3g hydrogenated rapeseed alcohol, 1.0g cetyl alcohol, 2g stearyl alcohol, 2g stearamidopropyl dimethylamine, 4g cetyl ethylhexanoate, 0.9g lactic acid, 0.3g guar hydroxypropyltrimonium chloride, 4g 1,3-butylene glycol, 2g dipropylene glycol, and purified water to a total volume of 100g.

[0036] (Comparative Example 1) A hair composition was obtained by mixing 4g hydrogenated rapeseed alcohol, 4g cetyl alcohol, 3g stearamidopropyl dimethylamine, 6g caprylic / capric triglyceride, 0.5g citric acid, 0.015g sodium citrate, 0.1g polyquaternium-10, 4g 1,3-butylene glycol, 2g concentrated glycerin, 0.1g salicylic acid, 0.1g dipotassium glycyrrhizate, 0.5g l-menthol, 0.2g preservative, and purified water to a total volume of 100g.

[0037] (Comparative Example 2) A hair composition was obtained by mixing 8g of hydrogenated rapeseed alcohol, 3g of stearamidopropyl dimethylamine, 6g of caprylic / capric triglyceride, 0.9g of lactic acid, 0.1g of polyquaternium-10, 4g of 1,3-butylene glycol, 2g of concentrated glycerin, 0.1g of salicylic acid, 0.1g of dipotassium glycyrrhizate, 0.5g of l-menthol, 0.2g of preservative, and purified water to a total volume of 100g.

[0038] (Comparative Example 3) A hair composition was obtained by mixing 3g hydrogenated rapeseed alcohol, 3g cetyl alcohol, 3g stearamidopropyl dimethylamine, 6g caprylic / capric triglyceride, 0.65g lactic acid, 0.1g polyquaternium-10, 4g 1,3-butylene glycol, 2g concentrated glycerin, 0.1g salicylic acid, 0.1g dipotassium glycyrrhizate, 0.5g l-menthol, 0.2g preservative, 0.4g fragrance, and purified water to a total volume of 100g.

[0039] [Table 1]

[0040] <Example Test: Evaluation of Formulation Separation> For Examples 1 to 11 and Comparative Examples 1 to 3, the condition of the formulations was visually observed after storage at 50°C for 4 days. The results are shown in Table 2.

[0041] [Table 2]

[0042] In Examples 1 to 11, which combined stearamidopropyldimethylamine, lactic acid, cetyl alcohol, and two or more specific higher alcohols, and tri(caprylic / capric acid) glyceryl, jojoba oil, isopropyl myristate, ethylhexyl palmitate, or cetyl ethylhexanoate, respectively, no separation of formulations was observed. On the other hand, in Comparative Example 1, which contained citric acid and sodium citrate instead of lactic acid, Comparative Example 2, which did not contain cetyl alcohol, and Comparative Example 3, in which the mass ratio of higher alcohol to liquid oil was less than 1.3, separation of formulations was observed. [Industrial applicability]

[0043] The present invention makes it possible to provide an excellent hair composition containing stearamidopropyl dimethylamine, in which separation of the formulation is suppressed.

Claims

[Claim 1] (a) Stearamidopropyldimethylamine, (b) (b1) Cetyl alcohol, and (b2) Hydrogenated rapeseed alcohol, (c) Lactic acid and / or its salts, and (d) At least one liquid oil selected from the group consisting of caprylic / capric triglyceride, jojoba oil, isopropyl myristate, ethylhexyl palmitate, and cetyl ethylhexanoate. It contains [ingredient] and does not contain silicones. The mass ratio of (b1 + b2) / (d) is 1.3 or greater, A hair composition that is a hair shampoo, hair rinse, hair treatment, or hair conditioning agent.

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