KR20150008643A

KR20150008643A - Hair cosmetic composition containing 5,6-dihydroxyindole and prooxidant

Info

Publication number: KR20150008643A
Application number: KR20130082838A
Authority: KR
Inventors: 김기정; 강병하; 이존환
Original assignee: (주)아모레퍼시픽
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2015-01-23
Also published as: KR102050225B1

Abstract

The present invention relates to a hair cosmetic composition containing 5,6-dihydroxyindole and a prooxidant agent, wherein a melanin component is provided to hair damaged by coloring and heating so that the damage is alleviated. More specifically, the present invention relates to a hair cosmetic composition, for providing a melanin component to damaged hair, which comprises a first formulation containing 5,6-dihydroxyindole which is a melanin precursor and a second formulation containing a prooxidant agent for generating melanin of a high molecular weight by oxidizing the 5,6-dihydroxyindole.

Description

[0002] Hair cosmetic composition containing 5,6-dihydroxyindole and prooxidant, which contains 5,6-dihydroxyindole and an oxidation promoter,

The present invention relates to a cosmetic composition for hair containing 5,6-dihydroxyindole and an oxidation promoting agent for repairing damage by supplying a melanin component to hair damaged by dyeing and heat treatment, and more particularly, Dihydroxyindole which is a melanin precursor and an oxidation promoter capable of oxidizing the 5,6-dihydroxyindole to produce a high molecular weight melanin, To a cosmetic composition for hair.

Hair has the characteristic of being easily damaged from external environment. Recently, consumers perceive hair as a fashion, and hair dyeing and perming procedures are increasing, and hair is damaged by excessive use of hair dryer, a kind of lifestyle, and ultraviolet ray which is an environmental factor. As a result, the hair becomes dry, and at the same time, the characteristics such as gloss, softness, and smoothness of the hair are lowered, thereby increasing the complaints of consumers. In order to solve this problem, various attempts have been made through hair related products. However, it is mainly dependent on the surface of the hair, and is limited to external characteristics such as softness and smoothness. The research for this study has not been done so far.

In the past, protein and amino acid components have been used as repair agents for damaged hair. However, protein is hard to penetrate into hair cuticle layer due to its high molecular weight and amino acid component has a small molecular weight. When water is washed in the process of washing hair, It is difficult to expect the recovery effect of damaged hair.

Japanese Patent Laid-Open No. 2002-0255765

Accordingly, the present inventors have conducted research to provide a cosmetic composition for restoring damaged hair and preventing damage to hair. As a result, it has been found that a cosmetic composition containing 5,6-dihydroxyindole and a 5,6-dihydroxyindole Dihydroxyindole, which is a melanin precursor, can be secured by separating a binary agent containing an oxidation promoter capable of generating a high molecular weight melanin, thereby stably maintaining the melanin component in the damaged hair The damaged hair can be efficiently restored, and the present invention has been completed.

Accordingly, it is an object of the present invention to provide a cosmetic composition containing 5,6-dihydroxyindole and an oxidation promoter to prevent hair damage.

In order to accomplish the above object, the present invention provides a hair cosmetic composition containing 5,6-dihydroxyindole, which is a melanin precursor, and an oxidation promoting agent.

The cosmetic composition for hair according to the present invention is characterized in that it contains an antioxidant capable of oxidizing 1, 5,6-dihydroxyindole which is a melanin precursor and 5,6-dihydroxyindole to produce high molecular weight melanin The stability of the 5,6-dihydroxyindole was secured by separating the two agents. In addition, when used for damaged hair, 5,6-dihydroxyindole having a small molecular weight of 1 is penetrated into the hair to fill the damaged pores and oxidation is promoted by a pH agent having a pH of 8 or more. As a result, melanin having a high molecular weight is formed, You can recover damaged hair without coming out.

Fig. 1 is a graph showing tensile strength of hair measured.
FIG. 2 is a graph showing a change in brightness value in order to evaluate the penetration of melanin into hair.

The present invention relates to a method for oxidizing 5,6-dihydroxyindole containing 5,6-dihydroxyindole which is a melanin precursor and 5,6-dihydroxyindole for supplying melanin to damaged hair, The present invention relates to a hair cosmetic composition containing a disintegrant containing an accelerator.

During the storage of the hair cosmetic composition, the stability of the 5,6-dihydroxyindole is ensured by separating the first agent and the second agent into a separate container or a double container, and when the hair is used for damaged hair, And 5,6-dihydroxyindole having a small molecular weight penetrate into the hair to fill the damaged pores and promote the oxidation by the two agents having a pH of 8 or more to form melanin having a high molecular weight, The damaged hair can be restored without coming out again.

Hereinafter, the present invention will be described more specifically.

The 5,6-dihydroxyindole is contained for recovery of damaged hair and may be contained in an amount of 0.01 to 10% by weight, preferably 0.05 to 5% by weight, based on the total weight of the composition. When the amount of the 5,6-dihydroxyindole is less than 0.01% by weight, the effect of the component is insufficient. When the amount of the 5,6-dihydroxyindole is more than 10% by weight, And the like.

The oxidizing accelerator oxidizes the 5,6-dihydroxyindole to produce a high molecular weight melanin. It is usually used in a hair dye such as ammonia, monoethanolamine, aminomethylpropanol, isopropanolamine, sodium hydroxide, potassium hydroxide and the like May be used, and sodium hydroxide may be preferably used.

The reducing agent containing the oxidation promoter may be used in an alkali pH range of 8 to 12, particularly preferably in an alkaline pH range of 8 to 11. [ When the pH is less than 8, the cuticle of the hair is widened, the action of 5,6-dihydroxyindole efficiently penetrates into the hair is not easy, and the 5,6-dihydroxyindole is effectively oxidized It is not easy to make. If the pH range is more than 12, damage of the hair protein or skin irritation may occur.

The hair cosmetic composition may have a conventional formulation and may be formulated into, for example, a shampoo, a rinse, a hair treatment, a hair lotion, a hair serum or a hair essence. The cosmetic composition for hair of each of these formulations may contain various components to be blended in a conventional hair cosmetic composition according to the above-described various formulations or for a final purpose, and the kind and amount of these components can be easily selected by those skilled in the art have.

The hair cosmetic composition may be used as a shampoo composition. Depending on the type of the shampoo composition, a suitable ingredient may be added to the composition, and a surfactant, preservative, thickeners, viscosity regulators, pH adjusting agents, perfumes, dyes, hair conditioning agents and water may be added.

The surfactant may be an anionic surfactant or a zwitterionic surfactant, because it has better washing power and superior foaming power as compared to a nonionic / cationic surfactant. Specifically, the anionic surfactant may be selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate, ammonium laureth sulfate, and ammonium lauryl sulfate. But the present invention is not limited thereto, and the amphoteric surfactant may be cocamidopropyl betaine or cocamidopropyl hydroxy ketone. The surfactant may be contained in an amount of 5 to 50% by weight, and preferably 20 to 40% by weight based on the total weight of the composition. If the surfactant is contained in an amount of less than 5% by weight, the solubilizing effect and cleaning effect of the oil are insufficient. If the surfactant is contained in an amount exceeding 50% by weight, there is a problem of skin stability or shape.

The optional ingredients used in the compositions of the present invention are well known to those skilled in the art as conventional optional ingredients to maintain basic properties and quality. The optional ingredients include pearlizing agents, preservatives, viscosity adjusting agents, pH adjusting agents, perfumes, dyes, hair conditioning agents and the like.

As the pearlizing agent, glycol distearate, glycol monostearate, fatty acid and the like can be used. As the preservative, there may be used methyl p-hydroxybenzoate, propyl p-hydroxybenzoate, sodium benzoate, methyl chloroisothiazolinone, Methyl isothiazolinone, and the like, but is not limited thereto.

Examples of the viscosity modifier include amide-based nonionic surfactants such as cocamide, mica, cocamide, and sodium chloride. As the pH regulator, sodium phosphate, disodium phosphate, citric acid, sodium citrate and the like can be used have.

As the hair conditioning agent, a dimethicone base and a cationic polymer may be used alone or in combination of two or more.

Hereinafter, the present invention will be described in more detail with reference to Examples and Test Examples. However, it will be apparent to those skilled in the art that the present invention is not limited to these Examples and Test Examples, and can be applied to hair related products in general.

[Reference Example 1] Production of shampoo of Comparative Examples 1 to 3 and Examples

The shampoos of Examples and Comparative Examples were prepared in a conventional manner according to the composition shown in Table 1 below (unit: wt%). Sodium hydroxide was used as an oxidation promoter in the preparation, sodium laureth sulfate was used as a surfactant, and the production process was as follows.

Polyquaternium-10 was dispersed in purified water, and a surfactant, a repairing component for damaged hair (1 agent) and an alkalizing agent (2 agent) were added, and fragrance and sodium chloride were added to prepare a shampoo.

Ingredients Example Comparative Example 1 Comparative Example 2 Comparative Example 3 1 2 Polyquaternium-10 0.2 0.2 0.2 0.2 0.2 Sodium laureth sulfate 20 20 20 20 20 5,6-dihydroxyindole 0.2 - 0.1 - - Hydrolyzed wheat protein
[Below 1,000 Dalton] - - - 0.1 - Arginine - - - - 0.1 Sodium hydroxide - 0.5 0.25 - - Sodium chloride 0.8 0.8 0.8 0.8 0.8 incense 1.0 1.0 1.0 1.0 1.0 Purified water To 100 To 100 To 100 To 100 To 100

The hydrolyzed wheat protein and arginine, an amino acid component, are commonly known as damaged hair restorative materials, and their efficacy is compared with the present composition.

Comparative Examples 1 to 3 are used alone (3 g), but since the same amount is used at a ratio of 1: 1 in Example 1 (1.5 g) and 2 (1.5 g), the amount of 5,6- The sodium hydroxide in the dihydroxyindole and the quaternary agent is reduced in half by weight based on the total weight of the composition (3 g) when the same amount is mixed.

[Reference Example 2] Discoloration and treatment of hair

3 g of standard hair was evenly coated with a mixture of bleach powder and oxidizing agent (hydrogen peroxide), allowed to stand for 30 minutes, and washed with 8% sodium lauryl sulfate solution. The above procedure was repeated three times to discolor the hair. 3 g of the thus-obtained decolorized hair was repeatedly used for 30 minutes each for 1 minute with 3 g of the shampoos of Examples 1 and 2 and 1.5 g of the shampoo of Comparative Examples 1 to 3. The hair was dried for 24 hours at 30 ° C. and 40% After that, tensile strength evaluation and brightness of hair were evaluated.

[Test Example 1] Evaluation of tensile strength

In order to evaluate the effects of Comparative Examples 1 to 3 and Examples shown in Table 1 on the strength of hair, the tensile strength of the hair decolorized and treated was measured by the following method. 10 hair samples each having a thickness of 80 占 10 占 퐉 were taken from the treated hair of Comparative Examples 1 to 3 treated with Reference Example 2 and the hair treated by the example, and the hair was collected by a Rheometer (CR-500DX, manufactured by SUN Scientific CO. LTD., Japan), and then pulled at a rate of 20 mm / min to measure the magnitude of the force when the hair was broken. After repeating 5 or more times in the same manner, the obtained values were averaged to determine the strength of the hair. The results are shown in Table 2.

Decolorization Example Comparative Example 1 Comparative Example 2 Comparative Example 3 Tensile strength (g / cm ₂ ) 49.2 71.8 52.9 57.3 54.6

As can be seen from the results of Table 2 and FIG. 1, the hair treated with the example containing 5,6-dihydroxyindole and sodium hydroxide according to the present invention had a tensile strength higher than that of the hair treated with Comparative Examples 1 to 3 . It can also be seen that the hair treated in the Example is significantly higher than the tensile strength of the hair treated with Comparative Example 1 containing 5,6-dihydroxyindole and sodium hydroxide at the same time. Accordingly, it has been confirmed that the hair cosmetic composition prepared by treating the 5,6-dihydroxyindole and the oxidation promoter separately can increase the strength of the hair, and thus can repair damaged hair efficiently.

[Test Example 2] Evaluation of brightness of hair

In order to evaluate the penetration of melanin into the hair, the lightness values of the decolorizing hair before and after the treatment of Comparative Examples 1 to 3 and Example 1 described in Table 1 were measured using a colorimeter (Hunterlab Labscan EX). The results were compared using the change in brightness value ΔL * (initial L * value - L * value after treatment), and a larger ΔL * value indicates that the brightness of the hair became darker. Therefore, the larger the value of ΔL *, the more effective the hair penetration of the melanin component.

Example Comparative Example 1 Comparative Example 2 Comparative Example 3 DELTA L * 8.6 1.3 0.2 0.1

The results of Table 3 and FIG. 2 show that the hair treated with the examples containing 5,6-dihydroxyindole and sodium hydroxide according to the present invention exhibited a higher discoloration rate than the hair treated with Comparative Examples 1 to 3 It can be confirmed that the amount of change in brightness value is large. In addition, it can be seen that the hair treated in the Example is significantly larger in brightness value variation than the hair treated in Comparative Example 1 containing 5,6-dihydroxyindole and sodium hydroxide at the same time. Therefore, it has been confirmed that the hair cosmetic composition prepared by treating the 5,6-dihydroxyindole and the oxidation promoter separately can efficiently restore damaged hair by effectively penetrating the hair.

Claims

A cosmetic composition for hair comprising 5,6-dihydroxyindole and an oxidation promoter.

The cosmetic composition for hair according to claim 1, wherein the 5,6-dihydroxyindole and the oxidation promoter are separated into separate containers or double containers.

The cosmetic composition for hair according to claim 1, wherein the 5,6-dihydroxyindole is contained in an amount of 0.01 to 10% by weight based on the total weight of the composition.

The cosmetic composition for hair according to claim 1, wherein the oxidation promoter is an alkalizing agent.

The cosmetic composition for hair according to claim 1, wherein the composition is for restoring damaged hair.

The cosmetic composition for hair according to claim 1, wherein the composition is for preventing hair damage.