KR100576596B1 - Hairdye - Google Patents

Abstract

An oxidative hair dye comprising a first agent containing an oxidizing dye, and a second agent containing an oxidizing agent, the first agent comprising (A) monoethanolamine and / or monoisopropanolamine; (B) at least one substance selected from the group consisting of cysteine, homocysteine, N-acetylcysteine and salts thereof; And (C) ascorbic acid and / or salts thereof. The hair dye has excellent dye stability in the formulation, there is no odor due to the alkalizing agent in use, it is excellent in texture after dyeing and color fixing is also excellent.

Oxidizing hair dye, oxidizing agent, alkalizing agent

Description

Hair dye {HAIRDYE}

The present invention relates to a hair dye, more specifically a hair dye having excellent dye stability in the formulation, no odor by alkalinizing agent in use, excellent texture after dyeing, and fixing of color.

The hair dye has a lasting effect and the hair dye has a bleaching effect, so that the hair can be dyed with a lighter color tone than the original hair. Therefore, as the hair dye, an oxidative hair dye has been particularly widely used. Oxidative hair dyes include single-agent hair dyes mixed with water in use, and multi-agent hair dyes. Among them, a bi-agent type hair dye comprising a first agent comprising an oxidizing dye and an alkalizing agent and a second agent comprising an oxidizing agent has been mainly used.

The alkalizing agent used as the first agent generates oxygen by decomposing the oxidant used as the second agent, thereby decomposing melanin in the hair and bleaching the hair, while the oxidizing dye used as the first agent is caused by the oxidizing agent in the hair. Polymerizes by oxidation to dye hair. As the alkalizing agent, ammonia has been widely used because ammonia is volatile and does not remain in the hair. However, ammonia has a unique odor and some defects that irritate mucous membranes such as the eye.

In addition, although the alkalizing agent also has several effects of bloating the epidermis of the hair surface and infiltrating the dye into the hair to improve the hair dyeing effect, the alkalizing agent damages the hair and the keratin protein on the hair surface causes the alkalizing agent. Since it is easily decomposed by, there are some problems that adversely affect the hair feel after dyeing.

Further, as described above, the oxidative hair dye dyes hair by polymerizing the oxidative dye used as the first agent by oxidation with the oxidizing agent used as the second agent. Thus, reducing agents have generally been used to ensure that the oxidative dye used as the first agent does not react before mixing the first agent with the second agent. However, the inhibition of oxidation of the oxidizing dye, depending on the type of reducing agent, is insufficient, resulting in some problems of undesirably coloring the substrate prior to use by polymerizing the dye during storage of the formulation.

It is an object of the present invention to provide a hair dye having good dye stability in the formulation, no odor due to alkalizing agent in use, good texture after dyeing, and good fixation of color.

Disclosure of the Invention

According to the invention, the first agent comprises (A) monoethanolamine and / or monoisopropanolamine; (B) at least one substance selected from the group consisting of cysteine, homocysteine, N-acetylcysteine and salts thereof; And (C) ascorbic acid and / or salts thereof, an oxidative hair dye comprising a first agent containing an oxidative dye, and a second agent containing an oxidant.

Best Mode for Carrying Out the Invention

As mentioned above, the hair dye of the present invention is an oxidative hair dye comprising a first agent containing an oxidative dye, and a second agent containing an oxidant.

The first agent is an essential component (A) monoethanolamine and / or monoisopropanolamine; (B) at least one substance selected from the group consisting of cysteine, homocysteine, N-acetylcysteine and salts thereof; And (C) ascorbic acid and / or salts thereof. As described above, since the alkalizing agent is combined with two or more kinds of reducing agents in the present invention, it has excellent stability of the dye in the formulation, there is no odor caused by the alkalizing agent in use, excellent texture after dyeing, and color fixing Excellent hair dyes are provided.

Essential components of the first agent used in the present invention are the above-mentioned component (A), namely monoethanolamine and / or monoisopropanolamine.

Monoethanolamine and monoisopropanolamine are added to the first agent in the form of an aqueous solution, making the system alkaline and swelling the hair to accelerate the penetration of the dye into the hair. In addition, when monoethanolamine and monoisopropanolamine are mixed with a second agent including hydrogen peroxide, there are many advantages such as improving the bleaching of hair by accelerating the decomposition of hydrogen peroxide. In addition, since monoethanolamine and monoisopropanolamine do not have a bad smell etc. which ammonia has, it is preferable to use them. Among them, monoisopropanolamine is preferable.

The content of component (A) in the first agent is preferably 0.1 to 10% by weight, more preferably 0.3 to 6% by weight. The reason is that when the content is less than 0.1% by weight, its function as an alkalizing agent is likely to be insufficient, and when the content is more than 10% by weight, skin irritation and hair damage are likely to occur.

In addition to the alkalizing agents described above, the first agent of the hair dye of the present invention comprises two kinds of reducing agents, namely component (B) and component (C).

As the first reducing agent, ie component (B), at least one member selected from the group consisting of cysteine, homocysteine, N-acetylcysteine and salts thereof is used.

The second reducing agent, component (C), is ascorbic acid and / or salts thereof.

Since the two kinds of reducing agents are used in combination, the coloring of the oxidative dye can be effectively suppressed, the coloring time of the oxidizing dye can be controlled during the dyeing, to prevent the reoxidation of the dye precursor remaining in the hair, etc. Action.

The content of component (B) in the first agent is preferably 0.05 to 0.9% by weight, more preferably 0.3 to 0.5% by weight. The reason is that, when the content is less than 0.05% by weight, the antioxidant effect is likely to be insufficient, and when the content is more than 0.9% by weight, it takes a lot of time for coloring during dyeing.

The content of component (C) in the first agent is preferably 0.05 to 0.9% by weight, more preferably 0.3 to 0.5% by weight. The reason is that, when the content is less than 0.05% by weight, the antioxidant effect is likely to be insufficient, and when the content is more than 0.9% by weight, it takes a lot of time for coloring during dyeing.

The total content of component (B) and component (C) in the first agent is preferably 0.1 to 1% by weight. The reason is that when the total content is less than 0.1% by weight, the antioxidant effect is likely to be insufficient, and when the total content is more than 1% by weight, the time required for coloring during dyeing is likely to be too long.

In order to maintain the stability of the dye and to achieve sufficient fixation of the color, it is preferable that the alkalizing agent, i.e., the component (A) described above, is blended with two kinds of reducing agents, namely, the component (B) and the component (C) described above in a specific ratio. Do.

Specifically, the ratio of the content of component (A) to the total content of component (B) and component (C) described above, i.e., the ratio of {(A): [(B) + (C)]}, is preferred. Preferably from 0.5: 1 to 30: 1, more preferably from 1: 1 to 10: 1. The reason is that when the amount of component (A) is less than 0.5 part by weight based on 1 part by weight of [(B) + (C)], the dyeing strength is likely to be insufficient, and when the amount exceeds 30 parts by weight, the skin This is because irritation and hair damage are likely to occur.

Oxidized dye added to the first agent according to the present invention means a dye used for an oxidative hair dye such as an oxidized dye precursor or coupler.

Oxidation dyes that can be used in the present invention are not limited to those specified, for example, oxidized dye precursors such as phenylenediamine, toluylenediamine, N-phenylphenylenediamine, aminophenol, aminonitrophenol, diphenylamine , Diaminophenylamine and diaminopyridine; And couplers such as resorcin, m-aminophenol, m-phenylenediamine, catechol and pyrogallol. The content of the oxidizing dye in the first agent is usually preferably about 0.01 to 10% by weight.

Examples of the oxidizing agent added to the second agent according to the present invention include hydrogen peroxide, carbamoyl peroxide, peracid, alkali metal hydrobromide, oxidoreductase such as double gun oxidoreductase, and the like.

In addition to the components described above, the hair dye of the present invention may further include the following components within a range that does not impair the desired effect according to the present invention.

In some cases, surfactants (eg polyoxyethylene alkyl ethers such as polyoxyethylene cetyl ether and polyoxyethylene stearyl ether), oil components (eg higher alcohols such as cetyl alcohol, stearyl alcohol And oleyl alcohols; silicones such as dimethyl polysiloxanes; hydrocarbon oils such as liquid paraffin), thickeners (eg water soluble polymers such as carboxyvinyl polymers, hydroxyethyl cellulose, guar gum and xanthan gum), humectants (eg , Polyhydric alcohols such as glycerol, 1,3-butylene glycol and polyethylene glycol), animal or plant extracts, fragrances and the like may be appropriately added to the first agent.

Water may also be included in the first agent. As water, purified water, ion-exchange water, tap water, etc. are mentioned, for example. The content of water in the first agent can be appropriately adjusted to obtain the desired viscosity.

In addition, in some cases, stabilizers such as hydrogen peroxide, surfactants, oil components, acids, pH adjusters, perfumes, and the like may be appropriately added to the second agent.

The hair dye of the present invention can be used in various forms such as lotions, creams, pastes, gels, aerosols and aerosol foams.

When the hair dye of the present invention is used, the first agent is suitably mixed with the second agent just before the hair dyeing treatment, and the mixture is applied to the hair.

The invention will be explained in more detail based on the following examples which do not limit the invention.

Examples 1 to 3, and Comparative Examples 1 to 3

In order to obtain a composition, the first agent of the hair dye was prepared by mixing the components listed in Table 1 in a conventional manner.

In addition, a second agent of the hair dye was prepared in a conventional manner according to the formula below.

<Prescription about second agent of hair dye>

35% Aqueous hydrogen peroxide 16.5% by weight

Purified water 83.5 wt%

Next, the following physical properties were evaluated using the 1st agent and the 2nd agent of the hair dye obtained. The results are shown in Table 1.

(1) stability of dye

The aluminum tube was filled with the first agent of the hair dye and stored at 40 ° C. for 30 days. Thereafter, the contents were pressed from an aluminum tube. After visually observing the degree of coloring of the dye, it was evaluated according to the following evaluation criteria:

: 염료의 착색이 인지되지 않음.

: Coloring of dye is not recognized.

(Triangle | delta): The coloring of dye is recognized slightly.

 X: Coloring of dye is recognized.

(2) odor and texture

The first agent of the hair dye was mixed in the same volume as the second agent of the hair dye and the mixture was evenly applied to the white hair bundle. Thereafter, the hair was kept at 30 ° C. for 20 minutes and then sufficiently washed. The malodor of the hair dye, and the feel of the hair bundle after dyeing were evaluated at this stage according to the following criteria:

<Evaluation Criteria for Odor>

: 악취가 거의 느껴지지 않음.

: Almost no smell.

(Triangle | delta): A bad smell is felt a little.

 ×: Odor is strongly felt.

<Evaluation criteria for feel>

: 염색 전의 모발 다발과 비교하여 차이가 없음.

: No difference compared to hair bundle before dyeing.

(Triangle | delta): It deteriorates rather compared with the hair bundle before dyeing.

 X: It worsens clearly compared with the hair bundle before dyeing.

(3) color fixation

The first agent of the hair dye was mixed in the same volume as the second agent of the hair dye, and the resulting mixture was evenly applied to the bundle of wool and then washed thoroughly. The bundle of wool was soaked in 10% water soluble sodium lauryl sulfate and sonicated at 40 ° C. for 10 minutes. Fixation of color was evaluated according to the following evaluation criteria. As a comparative control, a wool bundle before sonication was used.

<Evaluation Criteria>

: 인접 비교의 비교 대조군과 비교하여 염색성에서 차이가 없음.

: No difference in stainability compared to comparison control of adjacent comparison.

(Triangle | delta): There is no difference in dyeability compared with the comparative control of the comparison between the two.

 X: There is a slight difference in dyeability compared with the comparative control of the comparison between the two.

Neighbor comparison is a method of comparing two samples side by side directly, and a gap comparison is a method of comparing two samples individually at different times.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Composition of the first agent of the hair dye (% by weight) Monoisopropanolamine 0.6 5.0 6.0 0.5 3.0 - 28% aqueous ammonia - - - - - 5.0 L-cysteine hydrochloride 0.3 0.5 0.4 0.1 - - Sodium L-ascorbate 0.3 0.3 0.4 - 0.3 - Paraphenylenediamine 1.0 1.0 1.0 1.0 1.0 1.0 Metaaminophenol 0.2 0.2 0.2 0.2 0.2 0.2 Resorcin 0.5 0.5 0.5 0.5 0.5 0.5 POE (20) cetyl ether 5.0 5.0 5.0 5.0 5.0 5.0 Cetyl alcohol 5.0 5.0 5.0 5.0 5.0 5.0 Oleyl alcohol 5.0 5.0 5.0 5.0 5.0 5.0 Purified water Bal. Bal. Bal. Bal. Bal. Bal. Properties Dye stability

× × × stink

Texture

Color fixation

× △ × (Note) POE: Abbreviation of polyoxyethylene The numbers in parentheses mean the number of moles of added polyoxyethylene.

It is shown in Table 1 that the hair dyes of Examples 1 to 3 according to the present invention comprising the above-mentioned components (A) to (C) are odorless and show excellent effects in all of the stability, texture and color fixing of the dye. This can be seen from the result.

Example 4

The first agent of the emulsion oxidative hair dye was prepared in a conventional manner according to the formula below.

                                     (weight%)

Paraphenylenediamine0.5

Resorcin 0.2

Paraaminophenol 0.1

Metaaminophenol 0.2

L-Cysteine Hydrochloride 0.3

Sodium L-ascorbate 0.5

Sodium POE (3) Lauryl Sulfate 5.0

Cetyl Alcohol 5.0

Monoisopropanolamine 1.0

Spices 0.1

Purified Water Bal.

The resulting first agent was mixed in a volume equivalent to a second agent having the same composition as used in Example 1, and the mixture was applied to the bleached hair bundle. Thereafter, the hair was kept at 30 ° C. for 20 minutes, then sufficiently washed and dried. As a result, the hair was dyed brown.

Example 5

The first agent of the emulsion oxidative hair dye was prepared in a conventional manner according to the formula below.

                                     (weight%)

Paraphenylenediamine 0.1

Paraaminophenol 0.4

Metaaminophenol 0.1

5-aminoorthocresol 0.4

L-Cysteine Hydrochloride 0.3

Sodium L-ascorbate 0.3

POE (20) cetyl ether 8.0

Cetyl Alcohol 5.0

Monoisopropanolamine 0.6

Spices 0.1

Purified Water Bal.

The resulting first agent was mixed in a volume equivalent to a second agent having the same composition as used in Example 1, and the mixture was applied to the bleached hair bundle. Thereafter, the hair was kept at 30 ° C. for 20 minutes, then sufficiently washed and dried. As a result, the hair was dyed orange.

The hair dye of the present invention shows excellent stability of the dye in the formulation, there is no odor due to the alkalizing agent in use, excellent texture after hair dyeing, and color fixing is also excellent. Therefore, the hair dye of the present invention can be suitably used when dyeing hair.

Claims (5)

An oxidative hair dye comprising a first agent containing an oxidizing dye and a second agent containing an oxidizing agent, the first agent being (A) monoethanolamine, monoisopropanolamine, or monoethanolamine and monoisopropanolamine; (B) at least one substance selected from the group consisting of cysteine, homocysteine, N-acetylcysteine and salts thereof; And (C) ascorbic acid, salts thereof, or ascorbic acid and salts thereof. The hair dye according to claim 1, wherein the component (A) is monoisopropanolamine. The hair dye according to claim 1 or 2, wherein the content of component (A) is 0.1 to 10% by weight. The hair dye according to claim 1 or 2, wherein the total content of component (B) and component (C) is 0.1 to 1% by weight. The method according to claim 1 or 2, wherein the ratio of the content of the component (A) to the total content of the component (B) and the component (C) {(A): [(B) + (C)]} Hair dye having a value of 0.5: 1 to 30: 1.