Hair treatment agent

Abstract

To impart improvement of moistness, slip, and smooth texture to hair damaged in daily life.SOLUTION: A hair cosmetic comprises a phospholipid, a cationic surfactant, and a water-holding oil agent and / or a water-holding surfactant, wherein a presence ratio of the phospholipid to the cationic surfactant is 1:3 to 3:1, a presence ratio of the phospholipid to the water-holding oil agent and / or the water-holding surfactant is within a range of 1:20 to 20:1, and a presence ratio of the cationic surfactant to the water-holding oil agent and / or the water-holding surfactant is within a range of 1:20 to 20:1, wherein this composition provides a hair treatment agent having an effect of imparting sufficient moistness, slip, and smooth texture to dried hair.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair treatment agent that imparts sufficient moist feeling and smoothness to hair after rinsing, and further has the effect of improving smoothness. [Background technology]

[0002] In recent years, as more consumers use hair coloring and perm treatments, hair damage has become more serious. Hair damage is accompanied by the loss of 18-MEA (18-methyleicosanoic acid) present on the hair surface, which is known to roughen the hair surface and increase surface friction, so there is an increasing demand for highly effective treatment formulations.

[0003] In general, hair treatment preparations are generally applied with a combination of cationic surfactants and higher alcohols to improve hair smoothness after rinsing, but the effect of cationic surfactants alone is not sufficient. It is generally known that adding silicone to hair treatment agents improves smoothness, but the effect of adding plant-derived ingredients without adding silicone to improve smoothness is less well known.

[0004] The effects of using phospholipids, proteins, and cationic surfactants or phospholipids, cholesterol, and cationic surfactants to enhance water retention and provide moisturizing and smoothness have already been disclosed (Patent Documents 1 and 2), but it has not been found that they can improve slipperiness.Patent Documents 1 and 2 state that oils can be combined, but do not mention water-holding oils or the ratio of each.

[0005] It has been disclosed that vesicles are formed by combining phospholipids and cationic surfactants (Patent Document 3), but the structure of the cationic surfactant is limited, and the findings are related to cleansing base materials, and there is no mention of the effects on hair after rinsing.

[0006] A technology has already been invented to improve the smoothness and water repellency of hair using a cationic surfactant and a polyglycerol fatty acid ester having a hydroxystearic acid skeleton (Patent Application No. 2023-080873), but this differs from the present invention because the oil and / or surfactant having a hydroxystearic acid skeleton is not limited to a polyglycerol fatty acid ester and the ratio of phospholipid to cationic surfactant or the pH value is not mentioned. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 5-926 [Patent Document 2] Japanese Patent Application Publication No. 9-235212 [Patent Document 3] Japanese Patent Application Laid-Open No. 2006-193461 Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to provide a hair treatment agent that imparts sufficient moisturizing and smoothness to hair after rinsing, and further has the effect of improving smoothness, by blending a phospholipid and a water-holding oil and / or a water-holding surfactant into the hair treatment agent, and further adjusting the ratio of the cationic surfactant to the phospholipid and the water-holding oil and / or the water-holding surfactant to a specific ratio. [Means for solving the problem]

[0009] The present inventors have conducted extensive research into the above-mentioned problems and have found that the above-mentioned problems can be solved by a hair treatment agent containing a phospholipid and a cationic surfactant in a specific ratio, and further containing a water-holding oil and / or a water-holding surfactant in a specific ratio. [Effects of the Invention]

[0010] According to the present invention, the above-mentioned components are contained in a specific ratio, which provides the effect of improving the moist feeling, smoothness, and slipperiness of hair after rinsing. If the ratio does not fall within the range of the present invention, the effect described in the present invention will not be achieved, and in some cases may even be worsened. DETAILED DESCRIPTION OF THE INVENTION

[0011] The following describes embodiments of the present invention, but the present invention is not limited to these. Phospholipids used in the present invention include lecithins such as soybean lecithin, egg yolk lecithin, hydrogenated soybean lecithin, hydroxylated lecithin, and hydrogenated egg yolk lecithin; lysolecithin and / or hydrogenated lysolecithin, which are monoacylated versions of these lecithins obtained by enzymatic treatment; hydroxylated hydroxylecithin; and phospholipid fractions of lecithin, such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, phosphatidic acid, and phosphatidylserine. Among these, hydrogenated soybean phospholipids are preferred. Commercially available products include, for example, "NIKKOL Resinol S-10" (manufactured by Nikko Chemicals Co., Ltd.), "NIKKOL Resinol S-10M" (manufactured by Nikko Chemicals Co., Ltd.), and "NIKKOL Resinol S-10 PLUS" (manufactured by Nikko Chemicals Co., Ltd.). The amount used in the hair treatment agent of the present invention is not particularly limited, but is generally in the range of 0.1 to 10.0% by mass.

[0012] The cationic surfactant used in the present invention is not particularly limited, and may be one or more selected from mono-long-chain alkyl quaternary ammonium salts, di-long-chain alkyl quaternary ammonium salts, and mono-long-chain alkyl amines. Examples include cetrimonium chloride, steartrimonium chloride, behentrimonium chloride, cetrimonium bromide, steartrimonium bromide, behentrimonium bromide, cetrimonium methosulfate, steartrimonium methosulfate, behentrimonium methosulfate, dicetyldimonium chloride, distearyldimonium chloride, stearamidopropyl dimethylamine, and behenamidopropyl dimethylamine. Preferred are behentrimonium chloride, steartrimonium chloride, cetrimonium chloride, stearamidopropyl dimethylamine, and behenamidopropyl dimethylamine. More preferred is behenamidopropyl dimethylamine. An example of a commercially available product is "NIKKOL Amidoamine MPB PLUS" (manufactured by Nikko Chemicals Co., Ltd.) The amount used in the hair treatment agent of the present invention is not particularly limited, but it is generally used in the range of 0.1 to 10.0 mass %.

[0013] The water-holding oil and / or water-holding surfactant used in the present invention are not particularly limited in structure, and include, but are not limited to, those listed below. Examples of water-holding oils include dipentaerythrityl hexa(hydroxystearate / stearate / rosinate), phytosteryl / isostearyl / cetyl / stearyl / behenyl dimer dilinoleate, and phytosteryl macadamiate. Water-holding surfactants include polyglyceryl-10 pentahydroxystearate and polyglyceryl-10 heptahydroxystearate. Commercially available products include "NIKKOL Decaglyn 5-HS" (manufactured by Nikko Chemicals Co., Ltd.) and "NIKKOL Decaglyn 7-HS" (manufactured by Nikko Chemicals Co., Ltd.). The water-holding oil and / or water-holding surfactant preferably have a hydroxystearic acid skeleton. Furthermore, the amount used in the hair treatment agent of the present invention is not particularly limited, but is preferably in the range of 0.1 to 5.0% by mass. If the amount is less than 0.1% by mass, it becomes difficult to achieve the desired effect, and if the amount is more than 5.0% by mass, stickiness specific to the raw material becomes pronounced.

[0014] The ratio of phospholipid to cationic surfactant used in the present invention is 1:3 to 3:1. If the ratio of cationic surfactant is greater than 1:3, the effect of the phospholipid cannot be exerted. Furthermore, if the ratio of phospholipid is greater than 3:1, the phospholipid is adsorbed onto the hair surface, increasing surface friction and worsening smoothness. A ratio of 1:1 is preferable.

[0015] The ratio of phospholipid to water-holding oil and / or water-holding surfactant used in the present invention is 1:1 to 20:1. If the ratio of phospholipid is greater than 20:1, the phospholipid will be in excess and may precipitate, potentially impairing the smoothness and smoothness of hair. The ratio is preferably 1:1 to 5:1.

[0016] The ratio of cationic surfactant to water-holding oil agent and / or water-holding surfactant used in the present invention is 1:1 to 20:1. If the ratio of cationic surfactant is greater than 20:1, only the effect of the cationic surfactant is exerted, and the effect of the combined use of the water-holding oil agent and / or water-holding surfactant is not felt. A ratio of 1:1 to 5:1 is preferred.

[0017] The pH of the treatment agent of the present invention is preferably 4.5 or less. If the pH exceeds 4.5, the anionic phospholipid and the cationic surfactant may form a complex, which may deteriorate the stability of the treatment agent and further inhibit the effects of improving slipperiness and smoothness. A pH of 4.0 or less is more preferable.

[0018] In addition to the above-mentioned components, the hair cosmetic composition of the present invention may contain, depending on the purpose, polyhydric alcohols, oils, nonionic surfactants, polymers, polysaccharides, chelating agents, antioxidants, preservatives, pharmaceutical agents such as vitamins, peptides, amino acids, fragrances, and the like, which are generally incorporated into hair treatment agents, within the scope of not impairing the effects of the present invention.

[0019] The hair treatment agent of the present invention is limited to an in-bath formulation that is rinsed off, and examples thereof include hair treatments, conditioners, hair masks, and hair packs. [Example]

[0020] The present invention will be explained in more detail below with reference to examples, but the present invention is not limited to these examples.

[0021] 1. Method for preparing hair treatment agent Hair treatment agents were prepared containing the ingredients of the present invention as shown in Table 1. The preparation method involved adding phase A to phase B at 80°C to emulsify, then cooling to room temperature and mixing until homogeneous to obtain a reference product, examples, and comparative products.

[0022] 2. Evaluation Method A hair strand that had been subjected to a typical bleaching treatment was washed and rinsed with a typical shampoo, then treated with a hair treatment agent shown in Table 1 and rinsed with water. After towel drying and drying with a hair dryer, the hair was evaluated as described in 3. to 5. below. For each evaluation method, a treatment agent containing only a cationic surfactant, free of phospholipids and water-holding oils and / or water-holding surfactants, was used as the reference formulation for evaluation.

[0023] 3. Moisture evaluation The sample prepared in 1 above was used to evaluate its feel when used. A sensory evaluation was conducted by five in-house test subjects using the following evaluation criteria. The results are shown in Table 1. 〇: Better than standard prescription △: No significant difference can be seen compared to the standard prescription ×: Not as good as the standard prescription

[0024] 4. Evaluation of slipperiness The sample prepared in 1 above was used to evaluate its slipperiness. For the evaluation, the coefficient of dynamic friction (MIU) was measured using a friction tester (KES-SE, Kato Tech Co., Ltd.) under conditions of a load of 25 g and a movement speed of 1 mm / sec. The evaluation criteria are as follows: ○: Decreased by 0.1 or more compared to the standard prescription △: Less than 0.1 decrease compared to the standard prescription ×: Increased compared to standard prescription

[0025] 5. Smoothness evaluation The sample prepared in 1 above was used to evaluate its slipperiness. For the evaluation, a friction tester (KES-SE, Kato Tech Co., Ltd.) was used to measure the variation in the dynamic friction coefficient (MMD) under conditions of a load of 25 g and a movement speed of 1 mm / sec. The evaluation criteria are as follows: 〇: Decreased by 0.02 or more compared to the standard prescription △: Decreased by 0 or more but less than 0.02 compared to the standard prescription ×: Increased compared to standard prescription

[0026] [Table 1]

[0027] Below are examples of hair treatment applications that demonstrate the effects of the present invention. The blending amounts are in mass %. All of the hair treatment applications obtained in Examples 4 to 6 were confirmed to provide excellent moisturizing, slipperiness, and smoothness using the evaluation method of Example 1.

[0028] Example 4: Hair pack Phase A: Dipentaerythrityl hexa(hydroxystearate / stearic acid / rosinate) 1.5 (mass%) Hydrogenated lecithin 2.5 Squalane 10.0 Methylheptyl palmitate 2.0 Cetyl alcohol 10.0 Phase B: Steartrimonium chloride 4.0 Propanediol 5.0 Glycerin 5.0 Citric acid (appropriate amount) Sodium citrate (appropriate amount) Preservatives (appropriate amount) Water remaining Total 100.0 Preparation method: Same as the preparation method for 1. Hair treatment agent described in Examples. Results: The moist feeling, slipperiness and smoothness were excellent.

[0029] Example 5: Hair conditioner Phase A: Macadamia nut fatty acid phytosteryl 1.5 (mass%) Hydrogenated Lecithin 2.0 Squalane 5.0 Triethylhexanoin 2.0 Cetyl alcohol 5.5 Phase B: Behenamidopropyldimethylamine 3.0 Glycerin 5.0 Lactic acid appropriate amount Citric acid (appropriate amount) Sodium citrate (appropriate amount) Preservatives (appropriate amount) Water remaining Total 100.0 Preparation method: Same as the preparation method for 1. Hair treatment agent described in Examples. Results: The moist feeling, slipperiness and smoothness were excellent.

[0030] Example 6: Hair Mask Phase A: Polyglyceryl-10 pentahydroxystearate 1.5 (mass%) Hydroxylated Lecithin 6.0 Squalane 5.0 Ethylhexyl Palmitate 2.0 Cetyl alcohol 7.5 Phase B: Cetrimonium bromide 3.0 Glycerin 5.0 BG 2.0 Lactic acid appropriate amount Preservatives (appropriate amount) Water remaining Total 100.0 Preparation method: Same as the preparation method for 1. Hair treatment agent described in Examples. Results: The moist feeling, slipperiness and smoothness were excellent. [Industrial Applicability]

[0031] By using the hair treatment agent of the present invention, it is possible to impart sufficient moisturizing, slipperiness, and smoothness to healthy hair and hair damaged by chemical treatment.

Claims

1. A hair treatment agent comprising a phospholipid, a cationic surfactant, and a water-holding oil and / or water-holding surfactant, wherein the ratio of the phospholipid to the cationic surfactant is 1:3 to 3:1, the ratio of the phospholipid to the water-holding oil and / or water-holding surfactant is within the range of 1:1 to 20:1, and the ratio of the cationic surfactant to the water-holding oil and / or water-holding surfactant is within the range of 1:1 to 20:

1.

2. 2. The hair treatment agent according to claim 1, wherein the pH of the hair treatment agent is 4.5 or less.

3. 3. The hair cosmetic according to claim 1, wherein the water-holding oil and / or water-holding surfactant comprises a water-holding oil and / or water-holding surfactant having a hydroxystearic acid skeleton.

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