KR101510486B1 - Hair dye composition comprising catechin - Google Patents

Abstract

The present invention relates to a hair dye composition comprising a first agent containing a green tea catechin and a pH adjusting agent and a second agent containing a mordanting agent.

Since the hair dye composition of the present invention does not use oxidized synthetic dyes and hydrogen peroxide, it has excellent advantages in terms of dyeability and color persistence even when there is little skin irritation, hair damage, and allergy.

Green tea catechin, mordant, hair dye

Description

[0001] HAIR DYE COMPOSITION COMPRISING CATECHIN [0002]

The present invention relates to a hair dye composition.

The hair dye is classified into permanent hair dye, permanent hair dye, temporary hair dye, and other hair dye depending on how long the dye color lasts.

Permanent hair dye is generally called an "oxidative dye". The oxidative permanent hair dye has the advantage of excellent color sustainability because the dye penetrates into the hair and shows color by the oxidation polymerization reaction. However, the alkaline agent and hydrogen peroxide used in hair dye make hair protein damaged. Increasing the alkaline content to make the colors brighter results in brighter colors but also increases hair damage. Also, when the ammonia content is increased, there is a problem that the smell is increased. And oxidative dyes may cause allergic reactions to some people.

The semi-permanent hair dye is relatively large in size compared to the oxidative dye and can not penetrate deeper into the hair (to the layer of the hair).

The hair dyeing agent temporarily attaches pigment or pearl to the surface of the hair using a film forming agent, thereby temporarily imparting a coloring effect to the hair.

The mordant salt is an operation for treating a dyestuff with a drug which produces a colored compound which is insoluble (insoluble) when it is dyed with a dye (mordant dyestuff) having no dyeability It says. In other words, it refers to an operation of treating a dye that is not directly dyeable to the target dyed with an agent that completes dyeing by connecting it to the dyed material because of lack of affinity for the dyed material. This kind of hair dye is a useful hair dye for people who cause an allergic reaction to oxidized hair dye because they have no primary irritation or allergy to human body.

The present inventors have completed the present invention by confirming that catechin extracted from green tea is excellent in dyeability and color persistence.

Accordingly, an object of one embodiment of the present invention is to provide a hair dye composition containing green tea catechins.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and claims.

To achieve the above object, one embodiment of the present invention provides a hair dye composition comprising a first agent containing a green tea catechin and a pH adjusting agent and a second agent containing a mordanting agent.

Hereinafter, the present invention will be described in more detail.

The hair dye composition according to one embodiment of the present invention is free from skin irritation, hair damage, allergies and the like because it uses green tea catechin and does not use oxidation type synthetic dyes and hydrogen peroxide. It is also excellent in dyeability and color persistence.

Hereinafter, the present invention will be described in more detail.

The green tea catechin used in one embodiment of the present invention is a component derived from an extract of green tea. Green tea generally contains 10 to 15% catechin. Because of the low catechin content, it is disadvantageous in that when it is dyed with green tea, the dyeing power is lower than that of catechin alone. In addition, when green tea is used for dyeing, if green tea is used in order to improve the dyeing power, the formulation is not easy and the dyeing power is lowered due to other ingredients.

In one embodiment of the present invention, the green tea catechin may be contained in an amount of 0.01 to 99.0% by weight, preferably 0.1 to 50% by weight, more preferably 0.5 to 10% by weight based on the total weight of the first composition. If the amount is less than 0.01% by weight, the dyeing power is not effective. If the amount is more than 99.0% by weight, there may be a problem in making the composition convenient to use.

In one embodiment of the present invention, the pH adjusting agent may be contained in an amount of 0.01 to 30% by weight, preferably 0.1 to 20% by weight, more preferably 1 to 10% by weight based on the total weight of the first composition. If the amount is less than 0.01% by weight, the dyeing power is not effective. If the amount is more than 30% by weight, the pH is too high, and the dyeing ability is decreased.

In one embodiment of the present invention, the mordant may be contained in an amount of 0.1 to 10% by weight, preferably 1.0 to 7% by weight, based on the total weight of the second composition. If the amount is less than 0.1% by weight, the dyeing power is not effective. If the amount is more than 10% by weight, it is difficult to stabilize the formulation.

In one embodiment of the present invention, the first agent further contains a molybdic acid or an ester derivative thereof. The molybdic acid or its ester derivatives increase the penetration rate of the coloring agent into the hair and help to penetrate deeper.

The gallic acid or an ester derivative thereof may be contained in an amount of 0.01 to 10% by weight, preferably 0.1 to 5% by weight, more preferably 0.2 to 2% by weight, based on the total weight of the first composition. If the amount is less than 0.01% by weight, a sufficient dyeing effect can not be obtained. If the amount is more than 10% by weight, further improvement in color development power can not be expected.

In one embodiment of the present invention, the first agent may further contain at least one selected from the group consisting of a reducing agent and an antioxidant.

At least one selected from the group consisting of the reducing agent and the antioxidant may be contained in an amount of 0.01 to 30% by weight, preferably 0.1 to 10% by weight based on the total weight of the first composition. If the amount is less than 0.01% by weight, a sufficient dyeing effect can not be obtained. If the amount is more than 30% by weight, the reaction becomes too slow, and the dyeing effect decreases.

In one embodiment of the present invention, in addition to green tea catechins, natural dyes such as gallic acid, gallic acid esters, pyrogallol, rosewood, yellow whites, chrysanthemum, firefighting, fennel, cochinil, side, madder, safflower, , Duckweed, duckwood, and the like can be used. There is no particular limitation on the kind of ducks, and dyes derived from naturally occurring mordants can be used.

In one embodiment of the present invention, a pH adjusting agent is used for improving dyeability. Examples of the pH adjusting agent include L-arginine, monoethanolamine, triethanolamine, potassium hydroxide, sodium hydroxide, sodium carbonate sodium carbonate and aminomethyl propanol; phosphoric acid and its salts; lactic acid and its salts; glycolic acid and its salts; citric acid and its salts; Acetic acid, and the like. There is no particular limitation on the kind thereof, and a pH adjusting agent usually used in a hair dyeing agent can be used. In particular, L-arginine is one of the amino acids constituting proteins and is one of the constituents of hair. Therefore, when L-arginine is used, there is an advantage that not only the pH control effect but also the hair protecting effect can be obtained.

In one embodiment of the present invention, a reducing agent is used for improving the dyeability of the hair and stabilizing the iron salt. The reducing agent is not particularly limited as long as it is ordinarily used in the art, and examples thereof include sodium pyrophosphate, Sodium thiosulfate, thioglycolic acid, thio lactic acid, cysteine, and salts thereof.

In one embodiment of the present invention, an antioxidant may be used, and it is not particularly limited as long as it is ordinarily used in the art. For example, it may be at least one selected from the group consisting of ascorbic acid, erysorbic acid and salts thereof.

In addition, cationic surfactants, anionic surfactants, nonionic surfactants, and amphoteric surfactants can be used alone or as a mixture of higher alcohol, nonionic and anionic thickener for surfactants and surfactants for increasing purposes. And polyols such as propylene glycol, 1, 3-butyleneglycol, glycerin and the like, quaternary ammonium salts, cationic polymers, silicones, amino acids and proteins such as ethanol, isopropyl alcohol and benzyl alcohol, , And a known component such as a perfume can be blended.

Mordants used in one embodiment of the present invention include ferrous chloride, ferric chloride, ferrous sulfate, ferric sulfate, and salts thereof and hydrates thereof. Soluble metal salts such as synthetic mordants such as Al, Cu, Cr, Fe, Sn, and Ni can be used, and the kind thereof is not particularly limited, Anything you can use is available.

In one embodiment of the present invention, the content property may be formulated as a powder, a liquid, a cream, a lotion type or a gel in the case of the first agent. Particularly, in case of using a powder type, there is an advantage that oxidative discoloration of the green tea catechin can be prevented. In the case of the second agent, it can be formulated into liquid, cream, lotion or gel.

Hereinafter, the constitution and effects of the hair dye composition according to the present invention will be described with reference to Examples and Comparative Examples. In the examples and comparative examples, the first and second agents are used in cream form. However, the present invention is not limited to these examples and can be applied to various forms such as liquid, foam, lotion and the like.

[Manufacturing Example]

The green tea catechin used in the present invention was prepared using green tea / Thea sinensis Linnaeus, which is an evergreen tree belonging to Theaceae or a shrub. The green tea leaves were extracted with hot water at about 80 ° C., filtered, and the extract was separated into a column, concentrated, and spray dried to obtain green tea catechins. In the present invention, a catechin content of 70% is used, but the present invention is not limited thereto.

[Examples 1 to 4 and Comparative Example 1]

A powder type first agent and a liquid type second agent composition as shown in Table 1 below were prepared.

First composition (unit: wt%) 1 Example 1 Example 2 Example 3 Comparative Example 1 Green tea catechin 2.0 1.5 1.0 - Gallic acid - 0.5 1.0 2.0 L-arginine 0.1 0.1 0.1 0.1 Erysorbic acid 0.3 0.3 0.3 0.3 Hydroxyethyl cellulose 1.0 1.0 1.0 1.0 Monoethanolamine thioglyle
Cholsan 2.0 2.0 2.0 2.0 L-cysteine 1.0 1.0 1.0 1.0 Sodium hydroxide 1.0 1.0 1.0 1.0 Element 10.0 10.0 10.0 10.0 Purified water Suitable amount Suitable amount Suitable amount Suitable amount

 Second composition (unit: wt%) content Hydroxyethylcellulose 1.0 Ferrous sulfate 5.0 Sodium pyrophosphate 0.2 Erysorbic acid 0.2 Salicylic acid 0.3 Purified water Suitable amount

[Test Example 1] Evaluation of dyeability

In order to test the dyeability, the compositions shown in the above Examples and Comparative Examples in Table 1 were applied to standard hair of 23 cm evenly twice the weight of the hair, left to stand for 20 minutes, And allowed to stand for 20 minutes. Standard hair included black hair with 20-30% white hair. After the application and leaving time was completed, the shampoo solution was used to wash the flowing water for 1 minute using a shampoo solution, and then dried using a hair drier. The color of the dried hair was measured using a color difference meter (model: Hunterlab Labscan XE). The results were compared using the L ^* value after dyeing measured by the colorimeter. The L ^* value is a value indicating the lightness. The larger the L ^* value, the brighter the color. Therefore, the smaller the L ^* value, the darker the color is expressed, which means that the dyeability is excellent. The results are shown in Table 3.

Example 1 Example 2 Example 3 Comparative Example 1 L ^* 15.83 13.75 14.53. 16.86

As shown in Table 3, it was confirmed that the dyability of Examples 1 to 3 using catechin alone or in combination with gallic acid and catechin was superior to Comparative Example 1 using only gallic acid. Especially, it was confirmed that dyeability was better when gallic acid and catechin were used together.

[Test Example 2] Evaluation of color persistence

The hair dyed in Test Example 1 was put in a shampoo solution and shaken at a speed of 200 rpm for 30 minutes using a shaker, rinsed for 1 minute in flowing water, and dried with a hair dryer. This procedure was repeated three times, and then the color persistence was evaluated by using a colorimeter after drying, using the difference from the L ^* value in Test Example 1,? L ^* value. The smaller the value of ΔL ^* , the better the color persistence. The results are shown in Table 4 below.

Example 1 Example 2 Example 3 Comparative Example 3 DELTA L ^* 2.79 1.73 2.14 4.1

As shown in Table 4, it was confirmed that color durability of Examples 1 to 3 using catechin alone or in combination with gallic acid and catechin was superior to Comparative Example 1 using only gallic acid. Especially, it was confirmed that the color persistence is better when gallic acid and catechin are used together.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the scope of the present invention. Accordingly, the actual scope of the present invention will be defined by the appended claims and their equivalents.

Claims (12)

A green tea catechin, a gallic acid or a derivative thereof, and a second agent containing a pH controlling agent and a mordanting agent, wherein the green tea catechin based on the total weight of the first composition comprises 0.5 to 10% by weight, Wherein the derivative is contained in an amount of 0.1 to 5% by weight. delete The method according to claim 1, Based on the total weight of the first composition, 1.5% by weight of green tea catechin, 0.5% by weight of gallic acid or a derivative thereof and 0.01-30% by weight of a pH adjusting agent, To 10% by weight of the hair dye composition. The method according to claim 1, Wherein the gallic acid or derivative thereof is contained in an amount of 0.2 to 2% by weight based on the total weight of the first composition. The method according to claim 1, Wherein the first agent further comprises at least one member selected from the group consisting of a reducing agent and an antioxidant. 6. The method of claim 5, Wherein the at least one selected from the group consisting of the reducing agent and the antioxidant is contained in an amount of 0.01 to 30% by weight based on the total weight of the first composition. The method according to claim 1, Wherein the first agent is at least one natural dye selected from the group consisting of pyrogallol, logwood, yellow whites, phlox, firefighting, cochineal, side, madder, safflower, gilt, gardenia, ≪ / RTI > The method according to claim 1, The pH adjusting agent is at least one selected from the group consisting of L-arginine, monoethanolamine, triethanolamine, potassium hydroxide, sodium hydroxide, sodium carbonate, aminomethyl propanol, phosphoric acid, lactic acid, glycolic acid, citric acid and acetic acid . 6. The method of claim 5, Wherein the reducing agent is at least one selected from the group consisting of sodium pyrosulfite, sodium sulfite, thioglycolic acid, thio lactic acid, cysteine, and salts thereof. 6. The method of claim 5, Wherein the antioxidant is at least one selected from the group consisting of ascorbic acid, erythorbic acid and salts thereof. The method according to claim 1, The mordants may be selected from the group consisting of ferrous chloride, ferric chloride, ferrous sulfate or ferric sulfate ferments and their hydrates; Soluble metal salts of Al, Cu, Cr, Fe, Sn or Ni and salts thereof; lye; Iron; And alum. ≪ RTI ID = 0.0 > 21. < / RTI > The method according to claim 1, Wherein the first agent is formulated into a powder, a liquid, a cream, a lotion or a gel, and the second agent is formulated into a liquid, a cream, a lotion or a gel.