阅读说明：本技术 毛发增强剂 (Hair strengthening agent ) 是由 片冈沙织 小林孝聪 石森纲行 于 2020-03-23 设计创作，主要内容包括：提供通过涂抹于毛发,从而即使在冲洗后毛发增强效果也优异的毛发增强剂。作为其方法,是一种毛发增强剂,其特征在于,包含中性氨基酸和膨润土,且中性氨基酸:膨润土＝1000:1～0.3:1。(Disclosed is a hair-strengthening agent which is applied to hair and has excellent hair-strengthening effects even after rinsing. The hair-strengthening agent is characterized by comprising a neutral amino acid and bentonite, wherein the neutral amino acid is bentonite 1000: 1-0.3: 1.)

1. A hair strengthening agent is characterized by comprising neutral amino acid and bentonite, wherein the ratio of the neutral amino acid to the bentonite is 1000: 1-0.3: 1.

2. The hair tonic according to claim 1, wherein the neutral amino acid is 1 or 2 or more selected from glycine, alanine, and cystine.

3. The hair strengthening agent of claim 2, wherein the neutral amino acids are glycine, alanine and cystine.

4. A hair cosmetic comprising the hair growth enhancer according to any one of claims 1 to 3.

5. The hair cosmetic according to claim 4, comprising 0.1 to 10% by mass of a hair enhancer.

6. A hair treatment agent comprising the hair cosmetic according to claim 4 or 5.

7. The hair treatment agent according to claim 6, which is a hair bleach, a hair dye, or a permanent wave agent.

8. A hair cosmetic for wound care, which is the hair cosmetic according to claim 4 or 5 and is used for damaged hair.

9. The damage-care hair cosmetic according to claim 8, which is a hair treatment gel or a hair conditioner.

10. A hair cosmetic comprising an amino acid and bentonite.

11. A hair bleach, comprising a persulfate, an amino acid and a bentonite.

Technical Field

The present invention relates to a hair-strengthening agent, and more particularly to a hair-strengthening agent which is applied to hair and has an excellent hair-strengthening effect even after rinsing.

Background

When hair is treated with a bleaching agent, a hair dye, a permanent wave agent or the like, the color or the like of the hair can be changed, but the hair is damaged. One of the injuries is a phenomenon that hair becomes soft. If the hair becomes soft, it becomes difficult to style the hair, or split ends or broken hairs are easily formed.

Therefore, a hair-strengthening agent has been developed which can impart a hair-strengthening effect to damaged hair. For example, a hair-strengthening agent containing 1 or 2 or more kinds selected from citrulline and salts thereof as an active ingredient is known (patent document 1). However, the hair-strengthening effect of the hair-strengthening agent still has room for improvement.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2010-6724

Disclosure of Invention

Problems to be solved by the invention

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide a hair strengthening agent which is applied to damaged hair or undamaged hair and has an excellent hair strengthening effect even after rinsing.

Means for solving the problems

The present inventors have conducted intensive studies to solve the above problems, and as a result, have found that a hair strengthening agent which is excellent in hair strengthening effect after rinsing by applying to hair can be obtained by including a neutral amino acid and bentonite, and including 1000:1 to 0.3:1 of the neutral amino acid bentonite, and have completed the present invention.

Specifically, the hair tonic according to the present invention is characterized by comprising a neutral amino acid and bentonite, and the neutral amino acid bentonite is 1000:1 to 0.3: 1.

In the hair tonic, the neutral amino acid is preferably 1 or 2 or more selected from glycine, alanine, and cystine.

In the above hair tonic, the preferable neutral amino acids are glycine, alanine, and cystine.

The hair cosmetic composition according to the present invention is characterized by containing the hair growth enhancer.

The hair cosmetic composition preferably contains 0.1 to 10% by mass of a hair growth enhancer.

The hair treatment agent according to the present invention is characterized by containing the hair cosmetic.

Among the hair treatment agents, preferred are hair bleaches, hair dyes, and permanent wave agents.

The hair cosmetic for caring for damage according to the present invention is characterized by being used for damaged hair.

Among the above hair cosmetics for wound care, a hair treatment gel and a hair conditioner (ヘアウォーター) are preferable.

The hair cosmetic according to the present invention is characterized by containing an amino acid and bentonite.

The hair bleach according to the present invention is characterized by comprising a persulfate, an amino acid and bentonite.

ADVANTAGEOUS EFFECTS OF INVENTION

The hair strengthening agent comprises a neutral amino acid and bentonite, and the neutral amino acid bentonite is 1000: 1-0.3: 1, and can provide a hair strengthening agent which is applied to hair and has excellent hair strengthening effect even after rinsing.

Drawings

FIG. 1 is a graph showing the hair strength (kgf/mm) of hair treated with a hair bleach containing various amino acids²) The description of the drawings.

FIG. 2 is a graph showing the hair strength (kgf/mm) of hair treated with a hair bleach in which various amino acids and bentonite were blended²) The description of the drawings.

Detailed Description

The hair strengthening agent is characterized by comprising a neutral amino acid and bentonite, wherein the ratio of the neutral amino acid to the bentonite is 1000: 1-0.3: 1.

Neutral amino acids are amino acids that exhibit neutrality when dissolved in water, i.e., RCH (NH)₂) The substituent R in COOH is not an amino acid of any of a functional group exhibiting acidity and a functional group exhibiting basicity. The neutral amino acid used in the present invention is not particularly limited as long as it is such a neutral amino acid, and 1 kind or 2 or more kinds thereof may be used.

By using a neutral amino acid in combination with bentonite, a higher hair-strengthening effect can be obtained than when an acidic amino acid such as glutamic acid or a basic amino acid such as arginine is used.

Specific examples of the neutral amino acid include glycine, alanine, cystine, serine, cysteine, asparagine, glutamine, threonine, tyrosine, tryptophan, methionine, proline, phenylalanine, valine, leucine, and isoleucine. In addition, as the neutral amino acid, usually using L type amino acid, but can use D type, can be D type, L type mixture.

The neutral amino acid used in the present invention is preferably glycine, alanine, or cystine.

Bentonite is clay containing montmorillonite as a clay mineral as a main component, and swells when contacted with water, an organic solvent, or the like.

By mixing bentonite with a neutral amino acid at a specific ratio, a very high hair-strengthening effect can be obtained as compared with the case of using only a neutral amino acid or bentonite.

The mixing ratio of the neutral amino acid to the bentonite is 1000: 1-0.3: 1. Furthermore, the ratio is preferably 500:1 to 0.5: 1. If the blending ratio of the neutral amino acid is too large, the blending amount of the bentonite is too small, and the synergistic effect of combining the neutral amino acid and the bentonite is not easily felt. If the compounding ratio of bentonite is too large, the hair-strengthening effect is poor.

The method of mixing the neutral amino acid and bentonite is not particularly limited.

The hair tonic according to the present invention is solid and therefore difficult to apply directly to hair. Therefore, the hair tonic according to the present invention is preferably compounded in any formulation. The optional agent is preferably in the form of liquid, gel, paste, spray, or powder.

When the hair strengthening agent or the preparation containing the hair strengthening agent of the present invention is applied to hair, the hair strengthening agent has an excellent hair strengthening effect even after the hair is rinsed with water.

Therefore, the hair tonic according to the present invention is preferably blended in a hair cosmetic. The hair strengthening agent is preferably contained in an amount of 0.1 to 10% by mass based on the total amount of the hair cosmetic. If the amount of the compound is too small, the hair-strengthening effect may be difficult to feel. If the amount of the compound is too large, the function and usability of the preparation may be impaired.

The hair cosmetic according to the present invention is preferably a hair treatment agent or a hair cosmetic for wound care.

Examples of the hair treatment agent include a hair bleach, a hair dye, and a permanent wave agent.

When the present invention is used for a bleaching agent or a hair dye, the hair-strengthening agent may be blended with either one of the 1-component agent and the 2-component agent, or both of them.

When the present invention is used for a permanent wave agent, the hair strengthening agent may be mixed with only one of 1 agent and 2 agents, or may be mixed with both agents, but when it is mixed with only one of them, it is preferably mixed with 2 agents.

Examples of the hair cosmetic for wound care include a hair treatment gel, a hair conditioner, and the like.

In the hair cosmetic composition according to the present invention, components that can be blended with the hair cosmetic composition in general may be blended in a range that does not impair the effects of the present invention, in addition to the hair-strengthening agent as an essential component.

Examples of such components include cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, moisturizers, silicone compounds, organic acids and salts thereof, bactericides, ultraviolet absorbers, antioxidants, higher alcohols, hydrocarbons, ester oils, colorants, hair protectants, lubricating (emulsifying) agents, perfumes, solvents, fatty acids, viscosity modifiers, binders, film forming agents, and the like.

Examples

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. In the following examples, the compounding amounts are expressed in mass% unless otherwise specified.

First, hair used in the present invention and a method for evaluating hair strength are shown.

< Hair used in the present invention >

A bundle of hair of the same person (untreated hair) which had not been subjected to chemical treatment was used.

(untreated Hair)

The hair was washed with shampoo and then dried with a hair dryer to prepare untreated hair for the test.

(bleaching hair)

(1) Mixing bleaching agent 1:2 in proportion of 1:2 to obtain the final product.

(2) The treatment agent was applied to 1g of the hair.

(3) Left at 30 ℃ for 20 minutes.

(4) After washing with shampoo, the hair was dried with a hair dryer to prepare bleached hair for test.

< evaluation method of Hair Strength >

The following measurement was performed using a tensile tester, and the hair strength was obtained.

(1) The diameter of 1 hair at the measurement site of the tensile test was measured.

(2) The two ends of the part where the diameter of 1 hair was measured were fixed and left standing.

(3) In a standing state, the hair to be measured was immersed in water for 1 minute and 30 seconds to break the hydrogen bonds in the hair.

(4) In the state in water, the hair is stretched at a certain speed until it breaks (breaks).

(5) The tensile strength (N) was measured and analyzed together with the diameter value measured in (1).

(criteria for determination)

++: has good effect. The hair intensity of the samples was significantly high relative to the baseline value (significant difference p < 0.05).

+: has good effect. The hair strength of the samples was significantly high relative to the baseline value (significant difference p > 0.05).

-: no effect is produced. The hair strength of the sample was equal to or lower than the reference value.

The present inventors prepared hair bleaches shown in table 1 below by a conventional method and treated the hair used in the present invention (untreated hair) by the following treatment method. In addition, the amino acid used is any 1 of glycine, alanine, serine, cystine, glutamic acid, arginine and cysteine. In addition, the bleaching powder in table 1 used the formula described in table 2. The hair strength of the treated hair was evaluated based on the above evaluation method. The results are shown in fig. 1.

(bleaching agent treatment method)

(1) Mixing bleaching agent at a ratio of 1:2 to obtain the final product.

(2) The treatment agent was applied to 1g of hair.

(3) Left at 30 ℃ for 20 minutes.

(4) After washing with shampoo, drying was performed with a hair dryer.

TABLE 1

TABLE 2

Potassium persulfate	33.750	33.750
			Sodium metasilicate	9.000	9.000
Ammonium persulfate	33.750	33.750
			Talc	Balance of	Balance of
Ethylenediaminetetraacetic acid disodium salt	1.000	1.000
			Sodium persulfate	6.750	6.750
Sodium lauryl sulfate	1.000	1.000
			Sodium stearate	1.000	1.000
Perfume	Balance of	Balance of

As can be seen from fig. 1, when an amino acid is blended in the hair bleach, the hair bleach has a hair strengthening effect on bleached hair. It was found that the hair-strengthening effect was superior to that obtained by blending glutamic acid as an acidic amino acid and arginine as a basic amino acid with a neutral amino acid.

The present inventors prepared hair bleaches shown in table 3 below by a conventional method and treated the hair used in the present invention (untreated hair) by the above treatment method. In addition, the amino acid used is any 1 of glycine, alanine, cystine, glutamic acid and arginine. In addition, the bleaching powder in table 3 used the formula described in table 2. The hair strength of the treated hair was evaluated based on the above evaluation method. The results are shown in fig. 2.

TABLE 3

As can be seen from fig. 2, if half the amount of amino acid in the hair bleach blended with a neutral amino acid is replaced with bentonite, the hair-strengthening effect is surprisingly increased.

However, it is found that even when a half amount of amino acids in a hair bleach containing an acidic amino acid and a basic amino acid is replaced with bentonite, the hair strengthening effect is not substantially increased, and the latter hair strengthening effect is decreased.

Next, the present inventors treated the hair used in the present invention by the above treatment method using a hair bleach 1 agent shown in table 4 below (bleaching powder is a formula of table 2) and a hair bleach 2 agent shown in table 1 above. The hair strength of the treated hair was evaluated based on the evaluation method and the judgment criterion. The results are shown in table 4.

TABLE 4

As is clear from Table 4, when the neutral amino acid and bentonite were mixed in a ratio of 1:1, the hair-strengthening effect was significantly increased (examples 1-1 to 1-3). Further, it is understood that examples 1 to 4 comprising 3 neutral amino acids (alanine, cystine, glycine) and bentonite at 1:1 also had significantly increased hair-strengthening effects.

However, it was found that even when an acidic amino acid, a basic amino acid and bentonite were blended, no increase in hair-strengthening effect was observed (comparative examples 1 to 4 and 1 to 5).

Therefore, the hair tonic according to the present invention needs to contain a neutral amino acid and bentonite.

Next, the present inventors studied the mixing ratio and the mixing amount of the neutral amino acid and bentonite. The present inventors treated hair used in the present invention by the above treatment method using a hair bleach 1 shown in table 5 below (bleaching powder is a formula shown in table 2) and a hair bleach 2 shown in table 1 above. The hair strength of the treated hair was evaluated based on the evaluation method and the judgment criterion. The results are shown in table 5.

TABLE 5

As can be seen from table 5, the neutral amino acid and bentonite have hair-strengthening effects at a wide compounding ratio. However, it is clear that if the compounding ratio of bentonite is too much, the hair strengthening effect is slightly reduced.

Therefore, the mixing ratio of the neutral amino acid to the bentonite is 1000: 1-0.3: 1. In addition, the ratio is preferably 500: 1-0.5: 1.

Furthermore, it is understood from examples 2-7 to 2-9 that the blend amount of the neutral amino acid and bentonite in the hair bleach has a hair-strengthening effect in a wide range of blending amounts.

The present inventors have confirmed that hair strengthening effects are also exhibited in hair cosmetics other than hair bleaches.

The present inventors prepared hair cosmetics (hair dyes, permanent wave agents, hair treatment gels, hair conditioners) shown in tables 6 to 9 below by a conventional method, and treated the hair (untreated hair or bleached hair) used in the present invention by the following treatment method. The hair strength of the treated hair was evaluated based on the evaluation method and the judgment criterion. The results are shown in tables 6 to 9.

(Hair dye treatment method)

(1) Mixing the hair dye 1 agent and 2 agent at a ratio of 1:1, and making into treating agent.

(2) The treatment agent was applied to 1g of hair.

(3) Left at 30 ℃ for 20 minutes.

(4) After washing with shampoo, drying was performed with a hair dryer.

(permanent wave agent treatment method)

(1) 1 agent of 8g permanent wave agent is applied to 1g of hair.

(2) The mixture was left at 30 ℃ for 15 minutes.

(3) Rinse with water for 1 minute.

(4) 2 doses of 8g of permanent wave agent are applied to 1g of hair.

(5) The mixture was left at room temperature for 15 minutes.

(6) Rinse with water for 1 minute.

(7) Drying with a blower.

(treatment method of hairdressing gel)

(1) The hair was washed with water.

(2) 8g of hairdressing gel is smeared on every 1g of hair.

(3) After the water washing, drying was performed with a blower.

(Hair care water treatment method)

(1) The hair was washed with water.

(2) 8g of hair conditioner is smeared on every 1g of hair.

(3) After the water washing, drying was performed with a blower.

TABLE 6

TABLE 7

TABLE 8

TABLE 9

As can be seen from tables 6 to 9, the hair strengthening effect of the preparation prepared by mixing neutral amino acid and bentonite is remarkably improved in hair dyes, permanent wave agents, hairdressing gel and hair care water. This effect was confirmed not only for the damaged bleached hair but also for the untreated hair.

Examples of the formulation of the hair growth enhancer of the present invention are shown below. The present invention is not limited by these examples.

Formulation example 1: hair bleaching agent

Formulation example 2: hair dye

Formulation example 3: hair waving agent

Formulation example 4: hairdressing gel

Water (W)	Balance of
		Stearyl alcohol	7.00
Behenyl alcohol	7.00
		Stearyl trimethyl ammonium chloride	5.00
Phenoxyethanol	1.50
		Perfume	Proper amount of
Citric acid sodium salt	Proper amount of
		Cystine	1.25
Glycine	1.25
		Alanine	1.25
Bentonite clay	1.25
		Hydrogenated polyisobutenes	2
Myristic acid PPG-3 benzyl ether	2
		Aminopropyl dimethylpolysiloxane	2
Dimethylpolysiloxane	10
		Sorbitol	10
Arginine	1
		Betaine	1
Citric acid	1
		Solvent(s)	13
Emulsion stabilizer	1
		Hair conditioner	1.9
Emulsifier	1
		Absorbent agent	Proper amount of
Antioxidant agent	Proper amount of
		Total up to	100.00