Composition for hair coloring

Abstract

The present invention relates to a hair coloring composition; a hair coloring method using the composition; a hair coloring shampoo containing the composition; and a hair coloring method using the hair coloring shampoo. The hair coloring composition according to the present invention allows for gray hair coverage by coloring the hair brown, dark brown, or black using an air oxidation dye and a color-enhancing agent consisting of a sulfonic acid amino compound and / or a water-soluble alkali builder, without the use of an oxidizing agent.

Description

Technical Field

[0001] The present invention relates to a composition for hair coloring rings that can enhance the coloring efficiency of air-oxidizing dyes that self-oxidize in air to produce color without using an oxidizing agent.

Background Art

[0002] Hair dyes for dyeing hair are classified into oxidative hair dyes to which oxidative dyes are applied and non-oxidative hair dyes to which direct dyes, pigments, etc. are applied. Oxidative hair dyes contain both an oxidizing agent such as hydrogen peroxide and an alkaline agent as well as oxidative dyes. When the alkaline agent opens the cuticle layer of the hair, the oxidative dye penetrates inside, and then, after being oxidized by hydrogen peroxide, polymerizes to show color. By polymerizing the dye inside the hair, little detachment occurs by washing, and it is semi-permanent while having the advantage of excellent coloring. However, the oxidizing agent and alkaline agent used together not only cause damage to the hair but also have high skin irritation and cannot be separated from safety problems. On the other hand, many of the direct dyes and pigments of non-oxidative hair dyes are adsorbed on the surface of the hair to show color. Therefore, although the irritation is relatively low, they not only have a very low coloring power compared to oxidative hair dyes but also have the limitation of being easily desorbed by washing.

[0003] Air-oxidizing dyes penetrate inside the hair and show color by self-oxidizing and polymerizing in air without an oxidizing agent. Therefore, air-oxidizing hair dyes that do not require an oxidizing agent have low hair damage and enable semi-permanent dyeing with high convenience.

[0004] Typical air-oxidizing dyes include 5,6-dihydroxyindole, 4-amino-m-cresol, 1,2,4-trihydroxybenzene, 2,4-diaminophenol, 2-methoxy-p-phenylenediamine, 3,4-dihydroxyaniline, etc. In particular, 5,6-dihydroxyindole is known as an intermediate substance in the melanin synthesis mechanism in the body, and many one-component air-oxidizing hair dye compositions containing this have been developed [Patent Document 1].

[0005] However, there is a problem in that it does not have the same color development power as conventional two-part oxidative hair dyes that use an oxidizing agent directly, and various methods are being tried to solve this problem.

[0006] The oxidation of the dye can be promoted by separately constructing one component containing 5,6-dihydroxyindole and the other containing an alkaline agent [Patent Document 2], or by including a metal catalyst in the composition [Patent Documents 3 and 4], or by including an enzyme such as laccase or tyrosinase that has the ability to oxidize indole derivatives in the composition [Patent Document 5]. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2007-326810 [Patent Document 2] Korean Registered Patent Publication No. 10-2050225 [Patent Document 3] U.S. Patent No. 5609650 [Patent Document 4] European Patent No. 0697210 [Patent Document 5] Japanese Patent Publication No. 2002-25576 [Overview of the project] [Problems that the invention aims to solve]

[0008] Against this backdrop, the inventors continued their research to develop a composition that would color hair using air-oxidation dyes without the need for an oxidizing agent. As a result, they confirmed that when using a composition containing a color-enhancing agent selected from the group consisting of sulfonic acid amino compounds having both a sulfonic acid group and an amine group, their salts, and water-soluble alkali builders, the oxidation mechanism of air-oxidation dyes that penetrate into the hair or are adsorbed onto the hair surface is promoted, thereby darkening the hair color and completing the present invention. [Means for solving the problem]

[0009] Accordingly, the object of the present invention is to provide a hair coloring composition comprising an air oxidation dye; and a color enhancer selected from the group consisting of sulfonic acid amino compounds, their salts, and water-soluble alkali builders.

[0010] Another objective of the present invention is to provide a hair coloring method that includes the step of applying the hair coloring composition to the hair.

[0011] Furthermore, the present invention also has another objective: to provide a hair coloring shampoo containing the aforementioned hair coloring composition.

[0012] Furthermore, the present invention also has another objective: to provide a hair coloring method that includes the step of washing the hair with the hair coloring shampoo. [Effects of the Invention]

[0013] The hair coloring composition according to the present invention makes it possible to cover gray hair by coloring the hair brown, dark brown, or black using an air oxidation dye and a sulfonic acid amino compound (or its salt) and / or a water-soluble alkali builder as a color enhancer, without using an oxidizing agent. [Modes for carrying out the invention]

[0014] This can be explained in more detail as follows.

[0015] As one embodiment for achieving the above objective, the present invention provides a hair coloring composition comprising an air oxidation dye; and a color enhancer selected from the group consisting of sulfonic acid amino compounds, salts thereof, and water-soluble alkali builders.

[0016] The hair coloring mechanism in the present invention means that a composition containing a dye compound adsorbs on the surface of the hair or penetrates through the CMC (Cell Membrane Complex) between some cuticle layers, and a new color is expressed on the surface and inside of the hair. Specifically, it includes blackening the hair, darkening the hair color from a light color to a dark color, and preventing the whitening of the hair (including covering gray hair).

[0017] This corresponding mechanism is different from existing common oxidative dyeing. The mechanism of existing hair dyeing is that the ammonia component of the hair dye swells the hair or raises the cuticle on the hair surface, and when the pigment precursor penetrates into the raised hair, an oxidizing agent such as hydrogen peroxide decolorizes the melanin in the hair and reacts with the pigment precursor to dye the hair.

[0018] On the other hand, a composition containing an air oxidation dye according to the present invention; and a color intensifier selected from the group consisting of a sulfonic acid amino compound, its salt, and a water-soluble alkali builder; after the air oxidation dye mainly adsorbs on the surface of the hair or penetrates through some CMC layers, an oxidation reaction occurs over time only by reacting with oxygen in the air without a separate oxidizing agent by the color intensifier, and the color of the hair is developed into a brown, dark brown or black-based color.

[0019] In the present invention, it was confirmed that a composition containing various sulfonic acid amino compounds and / or water-soluble alkali builders has excellent hair coloring power.

[0020] The hair coloring composition according to the present invention is characterized by not containing an oxidizing agent and can color the hair without damaging the hair. The oxidizing agent means an oxidizing agent artificially contained in the composition or an oxidizing agent commonly used in the industry, for example, hydrogen peroxide or an urea type oxide, but is not limited thereto.

[0021] As an example, the hair coloring composition according to the present invention is preferably of a single-agent type.

[0022] The hair coloring composition according to the present invention can include those for browning, blackening or preventing whitening of hair.

[0023] In addition, the hair coloring composition can enhance the hair coloring effect or sustain the color development, and can include those for enhancing hair coloring or sustaining color development.

[0024] In the present invention, after the oxidative dye adsorbs on the surface of the hair or penetrates into a part of the interior, it exhibits color development by reacting with oxygen in the air without artificially adding an oxidizing agent.

[0025] In the present invention, a color development enhancer component may be additionally used to strengthen the color developing power of the color developing composition of the present invention.

[0026] The aforementioned air-oxidizing dyes include, specifically, 5,6-dihydroxyindoline, its salt, 5,6-dihydroxyindole, 5,6-dihydroxyindoline-2-carboxylic acid, 5,6-dihydroxyindole-2-carboxylic acid, methyl 5,6-dihydroxyindole-2-carboxylic acid, ethyl 5,6-dihydroxyindole-2-carboxylic acid, N-methyl-5,6-dihydroxyindole, N-methyl-5,6-dihydroxyindole-2-carboxylic acid, N-ethyl-5,6-dihydroxyindole-2-carboxylic acid, N-acetyl-5,6-dihydroxyindole, N-acetyl-5,6-dihydroxyindole-2-carboxylic acid, 5-acetoxy-6-hydroxyindole, 5-acetoxy-6-hydroxyindole-2-carboxylic acid, 5,6-Dihydroxyindoline-2-carboxylate methyl, 5,6-Dihydroxyindoline-2-carboxylate ethyl, N-Methyl-5,6-Dihydroxyindoline, N-Methyl-5,6-Dihydroxyindoline-2-carboxylic acid, N-Ethyl-5,6-Dihydroxyindoline, N-Ethyl-5,6-Dihydroxyindoline-2-carboxylic acid, N-Acetyl-5,6-Dihydroxyindoline, N-Acetyl-5,6-Dihydroxyindoline-2-carboxylic acid, 5-Acetoxy-6-Hydroxyindoline, 5-Acetoxy-6-Hydroxyindoline-2-carboxylic acid, 4-Amino-m-Cresol, 1,2,4-Trihydroxybenzene, 1,3,5-Triethylhydroxybenzene, Tris(2-Hydroxyethyl)Isocyanurate, Protocatechuic Examples of such dyes include, but are not limited to, aldehydes, gallic acid, tannic acid, anthocyanins, catechins, and plant polyphenols. Preferably, the air-oxidizing dye may be 5,6-dihydroxyindoline or a salt thereof.

[0027] The hair coloring composition may contain 0.001 to 5% by weight of air-oxidized dyes based on 100% by weight of the total composition, specifically 0.01 to 4% by weight, 0.01 to 3% by weight, or 0.01 to 2% by weight, but is not limited thereto. Air-oxidized dyes exhibit better color development within the above ranges.

[0028] In the present invention, air-oxidation dyes may include sulfonic acid amino compounds (or their salts) and / or water-soluble alkali builders as color enhancers to promote oxidation and improve hair color development without the use of an oxidizing agent.

[0029] In the hair coloring composition of the present invention, the sulfonic acid amino compound is a compound represented by the following chemical formula 1:

[0030] [ka]

[0031] In the above chemical formula 1, R is a linear or branched saturated or unsaturated hydrocarbon having 2 to 10 carbon atoms.

[0032] The aforementioned sulfonic acid amino compound is preferably one or more selected from the group consisting of taurine, 3-aminopropanesulfonic acid, and aminomethanesulfonic acid.

[0033] The aforementioned water-soluble alkali builder may be one or more selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium sulfate, sodium metasilicate, sodium alkalisilicate, sodium neutralsilicate, sodium phosphate, sodium tripolyphosphate, potassium phosphate, sodium pyrophosphate, sodium borate, and aluminosilicate.

[0034] Furthermore, the hair coloring composition may contain a color enhancer in an amount of 0.001 to 10% by weight based on 100% by weight of the total composition. Specifically, it may contain 0.005 to 8% by weight, 0.005 to 7% by weight, or 0.01 to 6% by weight, but is not limited thereto. The color enhancer exhibits a better color development effect within the above range.

[0035] The aforementioned hair coloring composition may, but is not limited to, be in the form of a shampoo, hair conditioner, hair treatment, hair lotion, hair gel, hair pack, hair cream, or hair essence.

[0036] The color enhancer contained in the hair coloring composition of the present invention acts as a buffer, helping to maintain the specific alkaline conditions under which the oxidation reaction of the air-oxidized dye takes place. As a result, it is expected that the color will develop on the hair through oxidative polymerization of the air-oxidized dye even during the washing process, which involves dilution with a large amount of water.

[0037] Another embodiment of the present invention provides a hair coloring method that includes the step of applying the hair coloring composition to the hair.

[0038] The above method may further include a step of applying the hair coloring composition to the hair and leaving it for 1 to 30 minutes, but preferably, even leaving it for a very short time of 1 to 10 minutes, more preferably 1 to 5 minutes, can cause the hair to develop a brown, dark brown, or black color. At this time, the application method is not particularly limited, and methods such as immersing the hair in the hair coloring composition or spraying the hair coloring composition onto the hair can be used.

[0039] Another embodiment of the present invention provides a hair coloring shampoo containing the hair coloring composition.

[0040] The aforementioned color-developing shampoo may be a regular shampoo composition to which the aforementioned hair coloring composition has been added. The amount of hair coloring composition added is not particularly limited, but the hair coloring composition may be added in an amount of 0.1 to 15% by weight or 0.5 to 15% by weight based on the total weight of the hair coloring shampoo.

[0041] In yet another aspect of the present invention, the hair coloring shampoo is characterized by being sulfate-free.

[0042] The use of sulfate-based surfactants in the aforementioned hair coloring shampoo may inhibit the adsorption and penetration of air-oxidized dyes into the hair. In a preferred embodiment, the hair coloring shampoo may additionally contain a non-sulfate-based surfactant in addition to the hair coloring composition.

[0043] Sulfate-based surfactants have high cleansing power but a drawback in that they have a low ability to deliver dye to the hair. In contrast, non-sulfate-based surfactants leave a larger amount of dye in the hair, resulting in even higher color development. While non-sulfate-based surfactants themselves do not promote the oxidation of dyes, they play a role in enhancing the ability to deliver dye to the hair, thereby improving color development.

[0044] Preferably, the non-sulfate surfactant may be present in the hair coloring composition in amounts of 10 to 500 parts by weight, 15 to 450 parts by weight, 20 to 400 parts by weight, 25 to 350 parts by weight, 30 to 300 parts by weight, 35 to 250 parts by weight, 40 to 200 parts by weight, 45 to 150 parts by weight, or 50 to 100 parts by weight per 1 part by weight of the air-oxidizing dye.

[0045] The aforementioned non-sulfate surfactant can be used without particular limitation as long as it is commonly used in the industry. For example, non-sulfate cationic surfactants, non-sulfate anionic surfactants, non-sulfate nonionic surfactants, non-sulfate amphoteric surfactants, or mixtures thereof can be appropriately selected and used from among the non-sulfate surfactants disclosed in the industry to achieve the effects of the present invention.

[0046] More specifically, the non-sulfate anionic surfactant may be one or more selected from the group consisting of disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, sodium cocoyl isethionate, sodium lauroyl methyl isethionate, sodium methyl cocoyl taurate, sodium C14-16 olefin sulfonate, sodium lauroyl sacocinate, sodium cocoyl alaninate, disodium cocoyl glutamate, sodium cocoyl glutamate, and potassium cocoyl glycinate, but is not limited thereto. The non-sulfate cationic surfactant may be one or more selected from the group consisting of behentrimonium chloride, cetrimonium chloride, steartrimonium chloride, dicetyldimonium chloride, distearyldimonium chloride, cocamidopropyl dimethylamine, stearamidopropyl dimethylamine, and behenamidopropyl dimethylamine, but is not limited thereto. The non-sulfate nonionic surfactant may be one or more selected from the group consisting of lauryl glucoside, (caprylyl / capryl) glucoside, coco glucoside, cocoyl methyl glucamide, (lauroyl / myristoyl) methyl glucamide, (capryloyl / caproyl) methyl glucamide, cocamide MEA, and cocamide methyl MEA, but is not limited thereto. The non-sulfate amphoteric surfactant may be one or more selected from the group consisting of lauryl hydroxysultaine, cocamidopropyl hydroxysultaine, cocobetaine, cocamidopropyl betaine, lauramidopropyl betaine, disodium cocoampodipropionate, and disodium cocoampodiacetate, but is not limited thereto.

[0047] Furthermore, the hair coloring shampoo may, but is not limited to, contain one or more additional ingredients selected from the group consisting of direct dyes, pH adjusters, swelling agents, buffers, preservatives, fragrances, humectants, viscosity modifiers, aliphatic alcohols, and vitamins, in addition to non-sulfate surfactants.

[0048] The direct dyes may be further included to further enhance their color development. Examples of direct dyes include, but are not limited to, Basic Blue 99, Basic Blue 16, Basic Blue 75, Basic Brown 16, Basic Brown 17, Basic Red 2, Basic Red 51, Basic Red 76, Basic Yellow 31, Basic Yellow 28, Basic Yellow 87, Basic Yellow 57, and Basic Black 2, HC Blue 2, HC Blue 16, HC Yellow 1, HC Yellow 2, HC Red 1, HC Red 3, HC Red 7, HC Red 8, HC Red 10, HC Red 11, HC Red 13, HC Red 16, HC Violet 2, HC Yellow 2, HC Yellow 5, HC Yellow 6, HC Yellow 7, HC Yellow 9, HC Yellow 12, Violet 401, Red 205, Yellow 403, Orange 205, Orange 201, Red 227, Blue 1, Blue 2, Blue 205, Yellow 4, Yellow 5, Black 401, Dispersed Violet 1, and Dispersed Black 9.

[0049] The pH adjusting agent is for adjusting the pH of the aqueous dye composition and can be used without particular limitation as long as it is commonly used in the industry, and one or more can be selected from sodium hydroxide, potassium hydroxide, triethanolamine, monoethanolamine, citric acid, and sodium citrate.

[0050] The aforementioned swelling agent may be any that is commonly used in the industry, and may be one or more selected from urea, thiourea, urea peroxide, polyoxymethylene urea, hydroxyethyl urea, ammonia, and their salts.

[0051] The buffering agent may be any one commonly used in the industry, and may be one or more selected from salicylic acid, sodium salicylate, lactic acid, and sodium lactate.

[0052] The aforementioned preservative may be any preservative commonly used in the industry, and may be one or more selected from methylparaben, propylparaben, phenoxyethanol, methyl p-Hydroxybenzoate, and ethyl p-Hydroxybenzoate. The aforementioned fragrance may be any fragrance commonly used in the industry, and may be selected from natural or artificial fragrances.

[0053] The aforementioned humectants can be used without particular limitation as long as they are commonly used in the industry, and commonly used ingredients including glycols such as polyethylene glycol and oils may be used.

[0054] The viscosity modifier can be any one that is commonly used in the industry, and may be one or more selected from poly stearate and sodium carboxymethyl cellulose, etc. The aliphatic alcohol can be any one that is commonly used in the industry, and may be one or more aliphatic alcohols having 16 to 22 carbon atoms, such as cetyl alcohol, stearyl alcohol, or behenyl alcohol, and the vitamin may be used to nourish the hair.

[0055] On the other hand, the hair coloring shampoo according to the present invention may contain water in addition to the aforementioned components, and the water may be purified water such as ion-exchanged water or distilled water. Furthermore, the amount of water is not particularly limited, but it is sufficient as long as it is enough to sufficiently dissolve or disperse the aforementioned components. By adding the hair coloring composition to a commonly used shampoo composition in this way to produce a hair coloring shampoo, a shampoo is provided that allows users to color their hair a darker color while shampooing every day.

[0056] When using the hair coloring shampoo according to the present invention, the air-oxidation dye is adsorbed onto the hair during the daily shampooing process, causing the hair to develop color. This prevents the hair from fading, which is the most common occurrence during the shampooing process. Furthermore, using the hair coloring shampoo eliminates the need for existing coloring treatments that take several tens of minutes or more, and also eliminates the need for periodic additional treatments due to hair growth, greatly improving convenience. It also allows for the development of a deep hair color in a short time while minimizing hair damage.

[0057] In yet another aspect of the present invention, a hair coloring method is provided which includes the step of washing the hair with the hair coloring shampoo.

[0058] The step of washing the hair may be performed for 1 to 10 minutes, 1 to 5 minutes, or 1 to 3 minutes, but is not limited to these durations. [Examples]

[0059] The present invention will be described in more detail below through the examples. These examples are solely for the purpose of illustrating the present invention in more detail, and it will be obvious to those with ordinary skill in the art that the scope of the present invention is not limited by these examples, as is the essence of the invention.

[0060] The raw materials used in this experiment were purchased from our usual raw material suppliers.

[0061] Comparative Examples 1-5 and Examples 1 and 2: Confirmation of the effect of the color enhancer

[0062] [Experimental Method]

[0063] The yak hair used for the experiment was prepared by washing it with a 15% Sodium Laureth Sulfate (SLES) solution, equivalent to 10% of the weight of the hair, and then drying it with a hairdryer. The initial color values ​​(L0*, a0*, b0*) of the hair prepared as described above were measured before dyeing using a colorimeter (Agera Spectrophotometer, HunterLab, light source D65 / 10).

[0064] Comparative Examples 1-5 and Examples 1 and 2 were prepared by containing the air oxidation dye (dihydroxyindoline hydrobromide) and the color enhancers (taurine, 3-aminopropanesulfonic acid) in the compositional ratios shown in Table 1.

[0065] Unlike color enhancers that have both sulfonic acid groups and amine groups and play a role in assisting oxidation, isethionic acid containing only one sulfonic acid group and ethanolamine containing only one amine group were also prepared and evaluated using the composition ratios of Comparative Examples 4 and 5. The hydroxyl groups contained in these structures have pKa values ​​at the 15-20 level and are not ionized in ordinary aqueous solutions.

[0066] A small amount of diluted hydrogen chloride or sodium hydroxide solution was added to each composition to adjust the pH to 8.8.

[0067] The procedure was carried out in the same manner: yak hair was supported in 20 ml of the composition at 25°C for 5 minutes, SLES 15% solution was applied in an amount equal to 10% of the weight of the hair, lathered and washed for 30 seconds, and then rinsed with running water at 35-38°C for 30 seconds.

[0068] After wiping off excess water with a tissue and completely drying with a hairdryer, the color difference meter values ​​(L1*, a1*, b1*) were measured, and the color change (ΔE) value was calculated relative to the yak hair color difference meter values ​​(L0*, a0*, b0*) before dyeing.

[0069] L*: Indicates brightness and darkness; a higher value indicates greater brightness.

[0070] a*: Green to red; the higher the value, the stronger the redness.

[0071] b*: Blue to yellow; the higher the value, the stronger the yellow tint.

[0072] L0*, a0*, b0*: Before dyeing

[0073] L1*, a1*, b1*: After dyeing

[0074]

number

[0075] [Table 1]

[0076] As shown in Table 1 above, when the air oxidation dye was applied alone (Comparative Example 1), the ΔE value was 25.00, while in Example 1, which included an additional 5% by weight of taurine, the ΔE value increased to 40.79, a 63.16% increase. Furthermore, it was confirmed that 3-aminopropanesulfonic acid (Example 2), a compound with a structure similar to taurine, also had an enhanced color development effect when included simultaneously with the air oxidation dye.

[0077] Through Comparative Examples 2 and 3, it was confirmed that the components of the oxidation accelerator in question themselves did not have a color-developing effect, thus confirming that the high ΔE values ​​in Examples 1 and 2 were due to the oxidative color-developing effect of the air-oxidized dye.

[0078] The color enhancers in Examples 1 and 2 form a buffer under specific alkaline conditions where oxidative color development of air-oxidized dyes begins, thereby maintaining relatively stable pH conditions even during the washing process where excess water is diluted, and improving the color development persistence of the air-oxidized dyes.

[0079] Even with isethionic acid, which has only sulfonic acid groups, and ethanolamine, which has only amine groups, excluding hydroxyl groups with high pKa values ​​that do not ionize in ordinary aqueous solutions, no color-enhancing effect of air-oxidation dyes has been confirmed (Comparative Examples 4 and 5).

[0080] Manufacturing Comparison Examples 1-3 and Manufacturing Examples 1-4: Confirmation of the effect of surfactants

[0081] [Experimental Method]

[0082] The yak hair used for the experiment was prepared by washing it with a 15% sodium laureth sulfate (SLES) solution, which was equivalent to 10% of the weight of the yak hair, and then drying it with a hairdryer.

[0083] As described above, the initial color values ​​(L0*, a0*, b0*) of the prepared traces before dyeing were measured in advance using a colorimeter (Agera Spectrophotometer, HunterLab, light source D65 / 10).

[0084] Comparative Examples 1-3 and Examples 1-4 were prepared to contain the following compositional ratios of air-oxidation dye (dihydroxyindoline hydrobromide) and surfactant.

[0085] Subsequently, the color change (ΔE) value was calculated using the same method as described above.

[0086] [Table 2]

[0087] As shown in Table 2, since the role of surfactants is to cleanse substances attached to the surface of the hair, it is generally very difficult to leave air-oxidation dyes in the hair. In particular, typical sulfate surfactants have a high HLB (hydrophilic-lipophilic balance) value, which gives them high hydrophilicity. Therefore, they have a high affinity for air-oxidation dyes dissolved in water and interact strongly with them, which is expected to further inhibit the process by which the dyes are adsorbed on the hair or penetrate into the inside of the hair.

[0088] In fact, in manufacturing comparative examples 2 and 3, where sulfate surfactants were applied, the color development was significantly reduced compared to manufacturing comparative example 1.

[0089] In contrast, despite being the same anionic surfactant, the non-sulfate surfactants used in Production Examples 1-4 increased the efficiency of air-oxidation dye penetration into the hair, promoting or at least maintaining color development.

[0090] Examples 3-8 and Comparative Examples 6-14: Confirmation of the effects of color-developing shampoo compositions

[0091] [Experimental Method]

[0092] Comparative Examples 6-14 and Examples 3-8 were prepared by including air-oxidation dyes (dihydroxyindoline hydrobromide, 4-amino-m-cresol, 1,2,4-trihydroxybenzene), taurine, baking soda, and soda ash in the following compositional ratios. Each of these was then used to dye prepared yak hair by washing it once. For washing, the yak hair was soaked in lukewarm water, then the prepared Comparative Example or Example was applied in an amount equivalent to 50% of the yak hair's weight, lathered and washed for 1 minute, left at room temperature for 5 minutes, and then rinsed with lukewarm water for 1 minute. Excess water was wiped off with a tissue, and after being completely dried with a hairdryer, the color change (ΔE) value was measured in the same manner as described above.

[0093] [Table 3]

[0094] [Table 4]

[0095] As shown in Tables 3 and 4, it was confirmed that the color development values ​​were generally significantly higher in Examples 3-8, which use a non-sulfate surfactant formulation and contain taurine and / or sodium bicarbonate together, compared to shampoo formulations produced with air oxidation dyes and sulfate-based surfactants (Comparative Examples 6 and 7).

[0096] In particular, in Example 8, where baking soda was further added to the composition of Example 3, which contains taurine along with the air oxidation dye, the color development value was even higher.

[0097] Baking soda and soda ash, used as alkali builders in detergents, appear to exhibit a synergistic effect in buffering together with taurine.

[0098] Furthermore, the color development effect was confirmed when other air-oxidation dyes were applied (Comparative Example 11 and Examples 6 and 7).

Claims

1. Air oxidation dyes; and One or more color enhancers selected from the group consisting of sulfonic acid amino compounds represented by the following chemical formula 1, their salts, and water-soluble alkali builders; Hair coloring compositions including: 【Chemistry 1】 In the above chemical formula 1, R is a linear or branched saturated or unsaturated hydrocarbon having 2 to 10 carbon atoms.

2. The aforementioned air-oxidation dyes are 5,6-dihydroxyindoline, its salt, 5,6-dihydroxyindole, 5,6-dihydroxyindoline-2-carboxylic acid, 5,6-dihydroxyindole-2-carboxylic acid, methyl 5,6-dihydroxyindole-2-carboxylic acid, ethyl 5,6-dihydroxyindole-2-carboxylic acid, N-methyl-5,6-dihydroxyindole, N-methyl-5,6-dihydroxyindole-2-carboxylic acid, N-ethyl-5,6-dihydroxyindole-2-carboxylic acid, N-acetyl-5,6-dihydroxyindole, N-acetyl-5,6-dihydroxyindole-2-carboxylic acid, 5-acetoxy-6-hydroxyindole, 5-acetoxy-6-hydroxyindole-2-carboxylic acid, 5,6- Methyl dihydroxyindoline-2-carboxylate, ethyl 5,6-dihydroxyindoline-2-carboxylate, N-methyl-5,6-dihydroxyindoline, N-methyl-5,6-dihydroxyindoline-2-carboxylic acid, N-ethyl-5,6-dihydroxyindoline, N-ethyl-5,6-dihydroxyindoline-2-carboxylic acid, N-acetyl-5,6-dihydroxyindoline, N-acetyl-5,6-dihydroxyindoline-2-carboxylic acid, 5-acetoxy-6-hydroxyindoline, 5-acetoxy-6-hydroxyindoline-2-carboxylic acid, 4-amino-m-cresol, 1,2,4-trihydroxybenzene, 1,3,5-triethylhydroxybenzene, tris(2-hydroxyethyl)isocyanurate, protocatechuic The hair coloring composition according to claim 1, comprising one or more selected from the group consisting of aldehyde, gallic acid, tannic acid, anthocyanins, catechins, and plant polyphenols.

3. The hair coloring composition according to claim 1, wherein the air oxidation dye is present in an amount of 0.001 to 5% by weight based on 100% by weight of the total composition.

4. The hair coloring composition according to claim 1, wherein the sulfonic acid amino compound is one or more selected from the group consisting of taurine, 3-aminopropanesulfonic acid, and aminomethanesulfonic acid.

5. The hair coloring composition according to claim 1, wherein the color enhancer is present in an amount of 0.001 to 10% by weight based on 100% by weight of the total composition.

6. The hair coloring composition according to claim 1, wherein the water-soluble alkali builder is one or more selected from the group consisting of sodium carbonate, sodium bicarbonate, sodium sulfate, sodium metasilicate, sodium alkali silicate, sodium neutral silicate, sodium phosphate, sodium tripolyphosphate, potassium phosphate, sodium pyrophosphate, sodium borate, and aluminosilicate.

7. The hair coloring composition according to claim 1, wherein the composition is in one dosage form.

8. The hair coloring composition according to claim 1, wherein the hair coloring includes a component for browning, blackening, or preventing whitening of the hair.

9. The hair coloring composition according to claim 1, wherein the hair coloring composition does not contain an oxidizing agent.

10. The hair coloring composition according to claim 1, wherein the hair coloring composition is in the form of a shampoo, hair conditioner, hair treatment, hair lotion, hair gel, hair pack, hair cream, or hair essence.

11. A hair coloring method comprising the step of applying the hair coloring composition described in claim 1 to the hair.

12. The hair coloring method according to claim 11, further comprising the step of applying the hair coloring composition to the hair and leaving it for 1 to 30 minutes.

13. A hair coloring shampoo comprising the hair coloring composition described in claim 1.

14. The hair coloring shampoo according to claim 13, further comprising a non-sulfate surfactant.

15. The hair coloring shampoo according to claim 14, wherein the non-sulfate surfactant is one or more selected from the group consisting of non-sulfate anionic surfactants, non-sulfate amphoteric surfactants, non-sulfate cationic surfactants, and non-sulfate nonionic surfactants.

16. The hair coloring shampoo according to claim 13, wherein the hair coloring shampoo is sulfate-free.

17. The hair coloring shampoo according to claim 14, wherein the non-sulfate surfactant is contained in an amount of 10 to 500 parts by weight per 1 part by weight of the air-oxidizing dye.

18. A hair coloring method comprising the step of washing the hair with the hair coloring shampoo described in claim 13.

19. The hair coloring method according to claim 18, wherein the step of washing the hair is performed for 1 to 5 minutes.

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