JP2022014486A - Cosmetic materials for hair - Google Patents

Abstract

To provide cosmetic materials for hair that are effective in straightening curled hair, ensures that the hair is soft allowing fingers to smoothly run through even after a cosmetic treatment has been repeated, and prevents the fading of hair dye.SOLUTION: The cosmetic materials for hair contain (A) carboxymethyl cysteine or a salt thereof, (B) a basic amino acid or a salt thereof, and (C) an organic alkali agent. The molar ratio [(B)/(A)] of the (B) component to the (A) component is 1.02-10.0, with a pH of 6.5-9.5.SELECTED DRAWING: None

Description

The present invention relates to a cosmetic for hair.

General hair straighteners include reducing agents such as thioglycolic acid and cysteamine, alkaline agents such as ammonia and monoethanolamine, and oxidizing agents such as hydrogen peroxide. It can be corrected. However, since the reducing agent and the alkaline agent damage the hair, the feel of the hair after the treatment is deteriorated, and troubles such as hair breakage due to repeated treatments occur.
Therefore, in recent years, a hair treatment agent that gives a habit-suppressing effect without using a reducing agent or an oxidizing agent has been disclosed. Patent Document 1 proposes a hair treatment agent containing glyoxylic acid and a guanidine salt and / or urea and having a pH of 1.0 to 2.5. Further, in Patent Document 2, a hair treatment agent containing glyoxylic acid and one or more selected from gluconolactone and elcalactone in a specific blending ratio and having a pH in the range of 2.0 to 3.8 is described. Proposed.
However, since these hair treatment agents are treated under strongly acidic conditions, the hair is excessively converged and the feel of the treated hair is deteriorated. In addition, there is a problem that the hair color is faded for the hair that has the hair color.

Japanese Unexamined Patent Publication No. 2016-17869 Japanese Unexamined Patent Publication No. 2019-81747

It is an object of the present invention to provide a hair cosmetic having an excellent effect of suppressing habit of hair, good softness of hair and good finger passage even after repeated treatments, and less fading of hair color.

As a result of diligent research, the present inventors have (A) carboxymethyl cysteine or a salt thereof, (B) a basic amino acid or a salt thereof, and (C) an organic alkaline agent, and (A) with respect to the component (A). B) Hair cosmetics characterized by having a molar ratio of components [(B) / (A)] of 1.02 to 10.0 and a pH of 6.5 to 9.5 are used for hair. It was found that it has an excellent habit-suppressing effect, has good hair softness and finger passage even after repeated treatments, and has little fading of hair color.
In the present invention, it is particularly preferable that (B) a basic amino acid or a salt thereof is lysine or a salt thereof.
In the present invention, it is particularly preferable that the (C) organic alkaline agent is an alkanolamine.

According to the present invention, it is possible to provide a hair cosmetic having an excellent effect of suppressing habit of hair, good softness of hair and good finger passage even after repeated treatments, and less fading of hair color.

The hair cosmetic of the present invention is (A) carboxymethyl cysteine or a salt thereof (hereinafter, "(A)".
) Component), (B) Basic amino acid or salt thereof (hereinafter sometimes referred to as "(B) component"), (C) Organic alkaline agent (hereinafter sometimes referred to as "(C) component") ), The molar ratio of the component (B) to the component (A) [(B) / (A)] is 1.02 to 10.0, and the pH is 6.5 to 9.5. It is characterized by.

(A) Carboxymethylcysteine or a salt thereof Carboxymethylcysteine is a compound having a structure in which the SH group of cysteine is protected by a carboxymethyl group.
Examples of the salt of carboxymethyl cysteine include basic amino acid salts such as lysine salt and arginine salt, and lysine salt is preferable.
As the component (A), one type may be used, or two or more types may be used in combination.
The preferable blending amount of the component (A) in the hair cosmetics is 0.01% by mass to 12.0% by mass, and the more preferable blending amount is 0.05% by mass to 12.0% by mass, which is a more preferable blending. The amount is 0.1% by mass to 12.0% by mass.
When the ratio is 0.01% by mass or more, the habit-suppressing effect becomes better, and when the ratio is 12% by mass or less, the stability of the pharmaceutical product becomes better.

(B) Basic amino acid or its salt The basic amino acid or its salt enhances the habit-suppressing effect by the synergistic effect with the component (A). Examples of the basic amino acid include lysine, arginine, histidine and the like, and lysine is preferable. Examples of the salt of the basic amino acid include hydrochloride, acetate, L-aspartate and the like, and hydrochloride is preferable.
As the component (B), one type may be used, or two or more types may be used in combination.
The amount of the component (B) may be blended so that the molar ratio of the component (B) to the component (A) [(B) / (A)] is 1.02 to 10.0. 1 to 10.0 is more preferable, and 1.2 to 10.0 is even more preferable. When the molar ratio [(B) / (A)] of the component (B) to the component (A) is 1.02 or more, the synergistic effect between the component (A) and the component (B) becomes more remarkable, and the habit is suppressed. The effect, the softness of the hair and the feel of the hair such as finger passage are improved.
The number of moles of (B) in the molar ratio of the component (B) to the component (A) is the total number of moles of basic amino acids contained in hair cosmetics, and is, for example, a base as a salt of the component (A). When containing a sex amino acid, the number of moles of (B) is the sum of the number of moles of the salt of the component (A) and the number of moles of the basic amino acid contained as the component (B).
For example, the number of moles of the carboxymethylcysteine basic amino acid salt of the component (A) is a1 mol, the number of moles of the component (A) other than the carboxymethylcysteine basic amino acid salt is a2 mol, and the number of moles of the component (B) is b. In the case of moles, the molar ratio [(B) / (A)] is a value calculated by (a1 + b) / (a1 + a2).

(C) Organic alkaline agent The organic alkaline agent improves the habit-suppressing effect by the synergistic effect with carboxymethyl cysteine.
Examples of the organic alkaline agent include alkanolamines, aliphatic amines, and heterocyclic compounds containing a nitrogen atom.
Examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine, triisopropanolamine, aminomethylpropanol, tetrahydroxypropylethylenediamine and the like.
Examples of the aliphatic amine include ethylenediamine and diethylhexylamine.
Examples of the heterocyclic compound containing a nitrogen atom include morpholine and niacin.
As the organic alkaline agent, alkanolamine is preferable, and monoethanolamine, triethanolamine, and aminomethylpropanol are more preferable from the viewpoint of habit-suppressing effect.
The organic alkaline agent in the hair cosmetic may be blended so that the pH of the hair cosmetic is 6.5 to 9.5, preferably 0.01% by mass to 20% by mass, preferably 0.01% by mass. -10% by mass is more preferable, and 0.01% by mass to 5% by mass is further preferable. When the blending amount is 0.01% by mass or more, the habit suppressing effect is good, and when the blending amount is 20% by mass or less, hair damage can be suppressed.
The pH of the hair cosmetic is 6.5 to 9.5, more preferably 7.0 to 9.5.

(D) Other Ingredients In addition to the above-mentioned (A), (B) and (C) components, the hair cosmetic of the present invention contains other optional additive components usually used in cosmetics, pharmaceuticals and the like. It can be added within a range that does not impair the effects of the invention.
Such components include, for example, surfactants such as anionic surfactants, cationic surfactants, nonionic surfactants or amphoteric surfactants, anionic polymers, cationic polymers, nonionic polymers or amphoteric polymers. Water-soluble polymers such as natural extract oils, higher fatty acids, hydrocarbons, ester oils, glycerides, waxes, higher alcohols, fatty acid amides or oils such as various modified silicone oils, collagen hydrolysates, keratin hydrolysates, silk water Degradants or protein hydrolysates such as elastin hydrolysates or derivatives thereof, as well as moisturizers, lower alcohols, thickeners, pH adjusters, UV absorbers, chelating agents, preservatives, pigments, dyes, fragrances, animals. Conventionally used compounds such as extracts and plant extracts can be appropriately blended.

The form of the hair cosmetic of the present invention is not particularly limited as long as it is a formulation applicable to hair, but for example, shampoo, rinse-off treatment, leave-on treatment, multi-agent treatment, hair pre- and post-treatment agent, and styling. Agents, perm agents, hair dyes and the like can be mentioned.
The hair cosmetic may or may not be washed off after being applied to the hair.
The hair cosmetic may be a one-agent type or a multi-agent type of two or more agents. In the case of a multi-agent type, for example, a two-agent type of cosmetic A containing (A) component and a cosmetic BC containing (B) component and (C) component, or a cosmetic A containing (A) component. And, a three-agent formula of a cosmetic B containing the component (B) and a cosmetic C containing the component (C) can be mentioned. From the viewpoint of convenience, it is preferably a one-agent type.

The amount of the hair cosmetic used in the present invention is not particularly limited, and the amount used may be selected according to the amount of hair, the application time, and the mode of use. For example, in the case of hair cosmetics such as shampoo and rinse-off treatment, which are used after being washed away, the hair cosmetic of the present invention is applied in an amount of 0.2 to 2 times the mass ratio of the hair, preferably 0. It is preferable to apply 5 times to 1.5 times the amount, leave it for 3 to 30 minutes, preferably 5 to 20 minutes, and then wash it off.
In the case of hair cosmetics used without rinsing such as leave-on treatment, it is preferable to use the hair cosmetics of the present invention in an amount of 0.01 to 0.2 times by mass ratio with respect to the hair. It is more preferable to use 0.01 to 0.1 times the amount.
From the viewpoint of suppressing habit, it is preferable to perform heat treatment after applying the hair cosmetic, for example, treating with a hair conditioning iron having a surface temperature of 140 ° C. to 230 ° C., preferably 160 to 180 ° C. while applying mechanical force and heat. There is a way to do it.

The present invention will be further described below with reference to Examples, but the present invention is not limited to these Examples.
Rinse-off treatments of Examples 1 to 22 and Comparative Examples 1 to 13 and leave-on treatments of Examples 23 to 34 and Comparative Examples 14 to 21 were prepared according to the formulations shown in Tables 1 to 5.
The numerical values in the table indicate mass%, and the balance of water is the amount required to make the total amount 100% by mass.
Explaining the molar ratio [(B) / (A)] in the table, for example, in Example 1, carboxymethyl cysteine (molecular weight: 179.19) as a component (A) was 0.01% by mass and (B). It contains 0.01% by mass of lysine (molecular weight: 146.19) as a component, but in this case, the number of moles of the component (A) in 100 g of hair cosmetics is 0.01 / 179.19 = 0. Since the number of moles of the component (B) is 0.01 / 146.19 = 0.0000684 mol, the molecular ratio [(B) / (A)] is 1.226.
Similarly, in Example 4, carboxymethyl cysteine lysine (molecular weight: 325.38) is contained in an amount of 5% by mass as a component (A) and lysine is contained in an amount of 0.5% by mass as a component (B). The number of moles of the component (A) in 100 g of the hair cosmetic is 5 / 325.38 = 0.01537 mol, and the number of moles of the component (B) is the number of moles derived from carboxymethylcysteine lysine and the number of moles derived from lysine. Since the total with the number, that is, (5 / 325.38) + (0.5 / 146.19) = 0.01879 mol, the molar ratio [(B) / (A)] is 1.223.

The components in the table are as follows.
(1) Behentrimonium chloride: docosyltrimethylammonium chloride (2) Stearoxypropyltrimonium chloride: octadecyloxypropyltrimethylammonium chloride (3) Dimethicone: Highly polymerized dimethylpolysiloxane (viscosity at 25 ° C. 20000-60,000 mPa · s) )
(4) Amodimethicone: Amino-modified silicone oil (viscosity at 25 ° C. 50,000 to 100,000 mPa · m, amino group content 0.25 to 0.35% by mass)

<Evaluation method of habit suppression effect>
(1) Preparation of hair bundle for evaluation A human hair bundle (about 20 cm, about 0.5 g) having three wave peaks when naturally drooping is washed with a 10 mass% sodium laureth sulfate aqueous solution and dried. , A hair bundle for evaluation was created. (2) Performance Evaluation Test of Rinse-off Treatment 0.7 g of the rinse-off treatments of Examples 1 to 22 and Comparative Examples 1 to 13 were applied to the hair bundles for evaluation, and the hair bundles were left at 32 ° C. for 15 minutes. After that, the hair was rinsed with lukewarm water, and the hair cosmetics were washed off from the hair. After washing with water, the water was wiped off with a towel, and then dried with a hair dryer. Further, the hair was straightened while applying mechanical force and heat to the hair with a hair conditioning iron heated to about 180 ° C. Then, the hair was washed and dried with a 10 mass% sodium laureth sulfate aqueous solution, and the habit suppressing effect was evaluated.
(3) Performance evaluation test of leave-on treatment 0.03 g of leave-on treatment of Examples 23 to 34 and Comparative Examples 14 to 21 was applied to the hair bundle for evaluation, and the hair was machined with a hair conditioning iron heated to about 180 ° C. The hair was straightened while applying force and heat. Then, the hair was washed and dried with a 10 mass% sodium laureth sulfate aqueous solution, and the habit suppressing effect was evaluated.
(4) Evaluation Criteria The evaluation was performed by sensory evaluation by a specialized panel of 10 people. Specifically, the condition of the hair bundle for evaluation before and after using the hair cosmetic was compared, and each specialized panel scored according to the evaluation score criteria shown below.
According to the following comprehensive evaluation criteria, the habit suppression effect was evaluated from the total value of the obtained evaluation points.

[Evaluation point criteria]
5 points: The habit-suppressing effect is very strong and the habit is gone, 4 points: The habit-suppressing effect is strong and the habit is almost eliminated , 3 points: The habit-suppressing effect is weak but the habit remains 2 Point: The habit-suppressing effect is weak and moderate habit remains. 1 point: The habit-suppressing effect is weak and strong habit remains.
[Comprehensive evaluation criteria for test items]
Evaluation 5: Total score is 40 points or more Evaluation 4: Total score is 32 points or more and less than 40 points Evaluation 3: Total score is 24 points or more and less than 32 points Evaluation 2: Total score is 16 points or more and less than 24 points 1: Total score is less than 16 points

<Evaluation method for hair softness and finger passage>
(1) Preparation of evaluation wigs Prepare the required number of wigs (triple cut; manufactured by Regina), and apply "Trenillo Powder Bleach (trade name)" and "Trenillo OX-6" manufactured by NICCA CHEMICAL CO., LTD. To these hairs. 160 g of "0 (trade name)" prepared for errands at a mass ratio of 1: 3 was applied, and the hair was bleached by heating at 32 ° C. for 30 minutes. Then, the hair of the wig was washed and dried with a 10 mass% sodium laureth sulfate aqueous solution to prepare a wig for evaluation.
(2) Performance Evaluation Test of Rinse-off Treatment 60 g of the rinse-off treatments of Examples 1 to 22 and Comparative Examples 1 to 13 were applied to the evaluation wig and left at 32 ° C. for 15 minutes. After that, the hair was rinsed with lukewarm water, and the hair cosmetics were washed off from the hair. After washing with water, the water was wiped off with a towel, and then dried with a hair dryer. Further, the hair was straightened while applying mechanical force and heat to the hair with a hair conditioning iron heated to about 180 ° C., and the softness of the hair and the finger passage of the hair after the initial treatment were evaluated. Further, this treatment was repeated 4 times, and the softness of the hair and the finger passage of the hair after the treatment 5 times were evaluated.
(3) Performance evaluation test of leave-on treatment 2 g of leave-on treatment of Examples 23 to 34 and Comparative Examples 14 to 21 was applied to the evaluation wig, and the hair was treated with a hair conditioning iron heated to about 180 ° C. The hair was straightened while applying heat, and the softness of the hair after the initial treatment and the finger passage of the hair were evaluated. Further, this treatment was repeated 4 times, and the softness of the hair and the finger passage of the hair after the treatment 5 times were evaluated.
(4) Evaluation Criteria The evaluation was performed by sensory evaluation by a specialized panel of 10 people. Specifically, each specialized panel scored according to the following evaluation point criteria, and the softness of the hair and the finger passage of the hair were evaluated from the total value of the obtained evaluation points according to the following comprehensive evaluation criteria.

[Evaluation point criteria]
5 points; very good 4 points; good 3 points; normal 2 points; bad 1 point; very bad.
[Comprehensive evaluation criteria for test items]
Evaluation 5: Total score is 40 points or more Evaluation 4: Total score is 32 points or more and less than 40 points Evaluation 3: Total score is 24 points or more and less than 32 points Evaluation 2: Total score is 16 points or more and less than 24 points 1: Total score is less than 16 points

<Evaluation method of fading suppression effect of hair color>
(1) Preparation of hair bundles for evaluation Prepare the required number of Yaku hair bundles (about 1.0 g, manufactured by Matai Japan Co., Ltd.), and "Assort Aria CC-8 / BA (trade name)" manufactured by NICCA CHEMICAL CO., LTD. Assorted Aria COX-6.0 (trade name) ”was applied at a mass ratio of 1: 1 and 1.5 g was applied, and the hair was dyed by heating at 32 ° C. for 30 minutes. Then, it was washed with 10 mass% sodium laureth sulfate aqueous solution and dried, and the hair bundle for evaluation was prepared.
(2) Performance Evaluation Test of Rinse-off Treatment 1.5 g of the rinse-off treatments of Examples 1 to 22 and Comparative Examples 1 to 13 were applied to the evaluation hair bundle and left at 32 ° C. for 15 minutes. After that, the hair was rinsed with lukewarm water, and the hair cosmetics were washed off from the hair. After washing with water, the water was wiped off with a towel, and then dried with a hair dryer. Further, the hair was straightened while applying mechanical force and heat to the hair with a hair conditioning iron heated to about 180 ° C., and the effect of suppressing fading of the hair color after the initial treatment was evaluated.
(3) Performance evaluation test of leave-on treatment 0.05 g of leave-on treatment of Examples 23 to 34 and Comparative Examples 14 to 21 was applied to the evaluation hair bundle, and the hair was treated with a hair conditioning iron heated to about 180 ° C. The hair was straightened while applying mechanical force and heat, and the effect of suppressing hair color fading after the initial treatment was evaluated.
(4) Evaluation Criteria The evaluation was performed by measuring the lightness (L value) of the color of the hair bundle for evaluation before and after the use of the hair cosmetic. Specifically, the L value of the evaluation hair bundle treated with the hair cosmetic of the example or the comparative example was measured with a spectrocolorimeter (SD 7000, manufactured by Nippon Denshoku Kogyo Co., Ltd.), and the hair cosmetic was used. The difference from the L value of the hair bundle for evaluation before the hair color was evaluated according to the evaluation criteria shown below, and the fading suppressing effect of the hair color was evaluated.

[Evaluation criteria for test items]
Evaluation 5: L value difference is less than 3 Evaluation 4: L value difference is 3 or more and less than 6 Evaluation 3: L value difference is 6 or more and less than 9 Evaluation 2: L value difference is 9 or more and less than 12 Evaluation 1: L Value difference is 12 or more

From each of the above examples, it was confirmed that the cosmetic for hair of the present invention has an excellent effect of suppressing habit of hair, has good softness and finger passage even after repeated treatments, and has little fading of hair color. did it.

Claims (3)

It contains (A) carboxymethyl cysteine or a salt thereof, (B) a basic amino acid or a salt thereof, and (C) an organic alkaline agent, and the molar ratio of the component (B) to the component (A) mentioned above [(B) / (A). )] Is 1.02 to 10.0, and the pH is 6.5 to 9.5. The hair cosmetic according to claim 1, wherein the (B) basic amino acid or a salt thereof is lysine or a salt thereof. The hair cosmetic according to claim 1 or 2, wherein the (C) organic alkaline agent is an alkanolamine.