Hair care ingredients

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) at least one higher alcohol selected from the group consisting of cetyl alcohol, hydrogenated rapeseed oil alcohol, stearyl alcohol, and behenyl alcohol, (c) lactic acid and / or salt thereof, and (d) liquid paraffin.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a hair composition which contains stearamidopropyl dimethylamine and has excellent formulation stability. [Background technology]

[0002] Hair is damaged by chemical treatments such as hair coloring, washing, and physical treatments using heat from a hair dryer. It is well known that when hair is damaged, it becomes dry, difficult to manage, and loses luster, which are negative factors from an aesthetic point of view. For this reason, hair conditioning agents have been widely used to care for damaged hair and to give hair a smooth and moist feel, i.e., to give hair a conditioning effect. Conditioning agents usually contain silicones such as dimethicone and amodimethicone in order to give hair a damage care effect, excellent smoothness, and a slippery feel. Silicones are widely used because they have characteristics such as friction reduction ability and spreadability, but it has been reported that silicones accumulate in hair and form a film on the hair surface and between the cuticle when conditioning agents containing these silicones are used for a long period of time (Patent Document 1). On the other hand, in the case of conditioning agents that do not contain silicones, in order to improve the feel of hair by replenishing oil to the hair in response to the removal of oil that protects the hair surface, it is known that cationic surfactants such as stearyl trimethyl ammonium salt and distearyl dimethyl ammonium salt and higher alcohols are generally used as main components, and various oils are further added to emulsify the hair, thereby giving the hair a smooth and moist feeling and improving the surface condition of the hair (Patent Documents 2-3). However, since the amount of oils to be added to the product tends to increase in order to give the hair sufficient manageability (Patent Document 1), there is a concern that the emulsion will collapse over time. In addition, there is a method of increasing the viscosity of the formulation in order to limit the movement of emulsified particles in order to stabilize the emulsion, but generally, conditioning agents are filled in a bottle and are shaped so that the formulation is discharged by the pressure of a pump, and if the viscosity is too high, the formulation will not enter sufficiently even when the pump is pressed, so the required amount will not be discharged, and there is a concern that this will affect usability.

[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 than quaternary ammonium salt. Among amine salt types, amidoamine compounds have been found to impart smoothness and softness to hair in recent years, and conditioning agents containing amidoamine compounds or their salts have been proposed (Patent Documents 4-5). It is also known that by adding higher alcohol, hair can be restored to its pre-treatment smooth feel (Patent Document 6). Stearamidopropyldimethylamine is a plant-derived amidoamine compound obtained from stearic acid and dimethylaminopropylamine.

[0004] Higher alcohols are used as emulsion stabilizers and foaming agents in creams, milky lotions, shampoos, and the like (Patent Documents 7-8), and blends of multiple higher alcohols, such as cetostearyl alcohol and hydrogenated rapeseed oil alcohol, with water are also on the market.

[0005] Liquid paraffin is a tasteless, odorless, colorless, transparent oily liquid that is highly refined by methods such as washing with sulfuric acid from the relatively low-viscosity lubricating oil fraction of petroleum, and is used as an emulsion stabilizer and plasticizer in formulations such as hair wax, massage cream, and cleansing cream (Patent Document 9). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2010-24167 A [Patent Document 2] Japanese Patent Application Publication No. 6-172131 [Patent Document 3] JP 2006-265205 A [Patent Document 4] Japanese Patent Application Publication No. 5-271035 [Patent Document 5] JP 2000-53537 A [Patent Document 6] JP 2006-290796 A [Patent Document 7] Japanese Patent Application Publication No. 9-169622 [Patent Document 8] Special Publication No. 2008-500459 [Patent Document 9] Patent No. 4589050 specification Summary of the Invention [Problem to be solved by the invention]

[0007] The present inventors have prepared a hair composition containing stearamidopropyl dimethylamine, and have found that when the composition was stored, the composition separated, resulting in poor formulation stability. Therefore, an object of the present invention is to provide a hair composition containing stearamidopropyl dimethylamine and having excellent formulation stability. [Means for solving the problem]

[0008] Means for Solving the Problems The inventors of the present invention have conducted intensive research to solve the above problems and have found that the above problems can be solved by combining a specific higher alcohol with a specific acid and / or a salt thereof, and liquid paraffin, thereby completing the present invention.

[0009] That is, the present invention provides: (1) A hair composition comprising: (a) stearamidopropyl dimethylamine; (b) at least one higher alcohol selected from the group consisting of cetyl alcohol, hydrogenated rapeseed oil alcohol, stearyl alcohol, and behenyl alcohol; (c) lactic acid and / or a salt thereof; and (d) liquid paraffin; (2) The composition for hair according to (1), characterized in that the mass ratio of (b) / (d) is less than 1.3; (3) A hair composition according to (1) or (2), which is free of silicones. (4) The hair composition according to any one of (1) to (3), which is a hair shampoo, a hair rinse, a hair treatment, or a hair conditioning agent. It is. Effect of the Invention

[0010] According to the present invention, it is possible to provide a hair composition which contains stearamidopropyl dimethylamine and in which separation of the preparation over time is suppressed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The components used in the hair composition of the present invention may be of the same quality as those normally used in pharmaceuticals, quasi-drugs and / or cosmetics.

[0012] The content of stearamidopropyl dimethylamine in the hair composition of the present invention is preferably from 0.01 to 10 w / w %, more preferably from 0.1 to 7 w / w %.

[0013] The content of cetyl alcohol, hydrogenated rapeseed oil alcohol, stearyl alcohol, or behenyl alcohol in the hair composition of the present invention is preferably 0.1 to 40 w / w % each.

[0014] The content of lactic acid and / or a salt thereof in the hair composition of the present invention is preferably 0.05 to 5 w / w %, more preferably 0.1 to 5 w / w %, of the total composition in terms of the effects of the present invention.

[0015] The content of liquid paraffin in the hair composition of the present invention is preferably from 0.5 to 30 w / w %, more preferably from 0.5 to 20 w / w %, in terms of the effects of the present invention.

[0016] In addition, the content ratio of higher alcohol and liquid paraffin in the present invention is preferably less than 1.3 by mass (higher alcohol / liquid paraffin) from the viewpoint of suppressing an increase in viscosity over time, which is another effect of the present invention, and the lower limit is preferably 0.01. Furthermore, various liquid oils other than liquid paraffin can be blended as necessary within a range that does not impair the effect of the present invention.

[0017] The hair composition of the present invention may further contain a polyhydric alcohol or water, if necessary. Examples of polyhydric alcohols include 1,3-butylene glycol, dipropylene glycol, propylene glycol, glycerin, etc., and these may be used alone or in combination of two or more. The content of the polyhydric alcohol is preferably 2 to 50 w / w% and more preferably 2 to less than 30 w / w% in the total composition. The content of water is preferably 2 to 90 w / w%, and more preferably 5 to 85 w / w%.

[0018] The hair composition of the present invention may further contain various surfactants other than stearamidopropyl dimethylamine, if necessary. The surfactants other than stearamidopropyl dimethylamine may be used alone or in combination of two or more. The amount of the surfactant is preferably 0.001 to 75 w / w%, more preferably 0.01 to less than 40 w / w%, of the total composition.

[0019] In addition to the above-mentioned components, the hair composition of the present invention may contain various components used in ordinary cosmetics, quasi-drugs, pharmaceuticals, etc., within the scope of not impairing the effects of the present invention. For example, excipients, fragrances, refreshing agents (menthol, peppermint oil, camphor, etc.), anti-inflammatory agents (guaiazulene, 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.), moisturizers (hyaluronic acid or its salts, chondroitin sulfate, etc.), various animals and plants (yew, moutan pi, licorice, hypericum, aconite, loquat, artemisia capillaris, comfrey, Examples of ingredients that can be used include extracts of angelica tree, saffron, Sanshishi, rosemary, sage, Saussurea japonica, 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.), solubilizers (various vegetable oils, various animal oils, alkyl glyceryl ethers, hydrocarbons, etc.), metabolic activators, gelling agents (water-soluble polymers, etc.), and adhesives. In addition, the hair composition of the present invention preferably does not contain silicones.

[0020] The amounts of these optional components added are not particularly limited, and can be determined experimentally while taking into consideration the feel when used, etc.

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

[0022] The hair composition of the present invention is prepared by incorporating the above-mentioned components in a conventional manner.

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

[0024] The hair compositions of Examples 1 to 5 and Comparative Examples 1 to 3 were prepared by a conventional method according to the formulations shown in Table 1 below. Specifically, stearamidopropyldimethylamine, higher alcohol, liquid oil, polyhydric alcohol and 1-menthol were mixed in a water bath at about 80°C, and then lactic acid, polyquaternium-10, salicylic acid, preservatives and purified water were added and emulsified using a homomixer. The mixture was then cooled to about 50°C, and dipotassium glycyrrhizinate, fragrance and purified water were added and mixed.

[0025] Example 1 A hair composition was obtained using 3g of hydrogenated rapeseed oil alcohol, 3g of cetyl alcohol, 3g of stearamidopropyl dimethylamine, 6g of liquid paraffin, 1g 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 glycyrrhizinate, 0.5g of l-menthol, 0.2g of a preservative, and purified water to a total weight of 100g.

[0026] Example 2 A hair composition was obtained using 3 g of hydrogenated rapeseed oil alcohol, 3 g of cetyl alcohol, 3 g of stearamidopropyl dimethylamine, 6 g of liquid paraffin, 0.9 g of lactic acid, 0.1 g of polyquaternium-10, 4 g of 1,3-butylene glycol, 2 g of concentrated glycerin, 0.1 g of salicylic acid, 0.1 g of dipotassium glycyrrhizinate, 0.5 g of l-menthol, 0.2 g of preservative, and purified water to a total weight of 100 g.

[0027] Example 3 A hair composition was obtained containing 6 g of stearyl alcohol, 3 g of stearamidopropyldimethylamine, 6 g of liquid paraffin, 0.9 g of lactic acid, 0.1 g of polyquaternium-10, 6 g of 1,3-butylene glycol, and purified water to a total weight of 100 g.

[0028] Example 4 A hair composition was obtained containing 2 g of hydrogenated rapeseed oil alcohol, 4 g of behenyl alcohol, 3 g of stearamidopropyl dimethylamine, 6 g of liquid paraffin, 0.9 g of lactic acid, 0.1 g of polyquaternium-10, 6 g of 1,3-butylene glycol, and purified water to a total weight of 100 g.

[0029] Example 5 A hair composition was obtained using 4g of hydrogenated rapeseed oil alcohol, 4g of cetyl alcohol, 3g of stearamidopropyl dimethylamine, 6g of liquid paraffin, 1g 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 glycyrrhizinate, 0.5g of l-menthol, 0.2g of a preservative, and purified water to a total weight of 100g.

[0030] Comparative Example 1 A hair composition was obtained using 3 g of hydrogenated rapeseed oil alcohol, 3 g of cetyl alcohol, 3 g of stearamidopropyl dimethylamine, 6 g of isopropyl myristate, 0.9 g of lactic acid, 0.1 g of polyquaternium-10, 4 g of 1,3-butylene glycol, 2 g of concentrated glycerin, 0.1 g of salicylic acid, 0.1 g of dipotassium glycyrrhizinate, 0.5 g of l-menthol, 0.2 g of a preservative, and purified water to a total weight of 100 g.

[0031] Comparative Example 2 A hair composition was obtained using 3 g of hydrogenated rapeseed oil alcohol, 3 g of cetyl alcohol, 3 g of stearamidopropyl dimethylamine, 6 g of jojoba oil, 0.9 g of lactic acid, 0.1 g of polyquaternium-10, 4 g of 1,3-butylene glycol, 2 g of concentrated glycerin, 0.1 g of salicylic acid, 0.1 g of dipotassium glycyrrhizinate, 0.5 g of l-menthol, 0.2 g of a preservative, and purified water to a total weight of 100 g.

[0032] Comparative Example 3 A hair composition was obtained using 3g of hydrogenated rapeseed oil alcohol, 3g of cetyl alcohol, 3g of stearamidopropyl dimethylamine, 6g of caprylic / capric triglyceride, 0.65g 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 glycyrrhizinate, 0.5g of l-menthol, 0.2g of preservative, 0.4g of fragrance, and purified water to a total weight of 100g.

[0033] [Table 1]

[0034] <Test Example 1: Preparation Separation Confirmation Test> Regarding Examples 1 to 5 and Comparative Examples 1 to 3, the state of the preparations after storage for 4 days at 50° C. was visually observed. The results are shown in Table 2.

[0035] [Table 2]

[0036] <Test Example 2: Evaluation of viscosity increase of formulation> For Examples 1 to 5 in which no separation was observed in Test Example 1, the viscosity was measured using a Brookfield viscometer (TVB-10M, manufactured by Toki Sangyo Co., Ltd.) when the rotor was rotated at 12 rpm / min for 1 minute. Note that for Example 5, the viscosity was 10,000 Pa·s or more, and because a specific value could not be displayed at 12 rpm / min due to the characteristics of the device, the viscosity was separately measured when the rotor was rotated at 3 rpm / min for 1 minute. Note that the viscosity immediately after preparation was less than 10,000 Pa·s for all of Examples 1 to 5. The results are shown in Table 3.

[0037] [Table 3]

[0038] As is clear from Table 2, when other liquid oils were used instead of liquid paraffin, separation of the preparation was observed (Comparative Examples 1 to 3), but no separation was observed in the preparations of Examples 1 to 5 of the present invention. Also, as is clear from Table 3, when the mass ratio of b / d was 1.3 or more, the viscosity was high (Example 5). Generally, conditioning agents are filled in a bottle and are shaped so that the formulation is discharged by the pressure of a pump. Therefore, if the viscosity becomes high, the formulation does not enter sufficiently even when the pump is pressed, and the required amount is not discharged, which may affect usability. Therefore, the formulations of Examples 1 to 4 were more preferable commercially. [Industrial Applicability]

[0039] According to the present invention, it is possible to provide a hair composition in which separation of the preparation is suppressed even when the composition contains stearamidopropyldimethylamine.

Claims

1. (a) stearamidopropyl dimethylamine, (b) hydrogenated rapeseed oil alcohol; (c) lactic acid and / or its salts, and (d) A hair composition comprising liquid paraffin.

2. (a) stearamidopropyl dimethylamine, (b) Cetyl alcohol, hydrogenated rapeseed oil alcohol, stearyl alcohol, and behenyl alcohol. at least one higher alcohol selected from the group consisting of alcohols; (c) lactic acid and / or its salts, and (d) containing liquid paraffin; (b) Among the components, hydrogenated rapeseed oil alcohol is an essential component; A hair composition, wherein the mass ratio of (b) / (d) is less than 1.

3.

3. 3. The hair composition according to claim 1, which is free of silicones.

4. The hair composition according to any one of claims 1 to 3, which is a hair shampoo, a hair rinse, a hair treatment, or a hair conditioning agent.

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