KR20120132094A - Foam-type hair dye - Google Patents

Abstract

PURPOSE: A foam type hair dye is provided to completely dissolve dye, to enable uniform hair dyeing, and to relieve skin and scalp irritation. CONSTITUTION: A foam type hair dye contains a first agent containing a solvent, dye and amphoteric surfactant for enhancing dye solubility; and a second agent containing hydrogen peroxide. The dye is toluene diamine sulfate or nitro phenylene diamine. The amphoteric surfactant is cocoamido propyl betain or lauryl betain. The weight ratio of the dye and surfactant is 1:1-5. The solvent is purified water, ion water, or ethanol.

Description

Foam hair dye {FOAM-TYPE HAIR DYE}

The present invention relates to a foam type hair dye.

Among hair dyes for dyeing hair, oxidative hair dyes are the most common permanent hair dyes and are called organic synthetic hair dyes or amino hair dyes. Currently, about 60,000 pigments are used. Oxidative hair dyes can be divided into the first agent and the second agent. The main component of the first agent is an alkali agent, which plays a role in opening the epidermis, and hydrogen peroxide, the main component of the second agent, serves to decolorize and color. The first agent contains an aromatic amino compound represented by paraphenylenediamine, which is the main raw material of the oxidative hair dye, which catalyzes the pigmentation reaction and promotes the reaction with melanin to decolorize well. And an alkaline pH range of pH 9-11. In addition, the first agent may further include an oxidizing dye precursor, a dye for coloring, an alkali reducing agent such as a coupler and a monoethanolamine, an antioxidant for controlling oxidation of a dye in storage, a thickener, a pH buffer, a surfactant, a cationic polymer, and the like. Hair conditioning agents, solvents, and the like.

The second agent includes a foaming agent for use as a hydrogen peroxide and foaming agent, which decomposes the melanin of the hair to brighten the color of the hair and promotes the oxidation reaction of the dye, and has an acidity of pH 2.5-3.5. Stored in the pH range of the zone.

Foam hair dyes, including foaming agents in oxidation hair dyes, are generally applied to the hair by mixing the first agent and the second agent just before application to the hair, and included in the first agent when ammonia swells and softens the cuticle. The dye molecules pass through the cuticle, and hydrogen peroxide decomposes the melanin pigment in the hair in the cortex, thereby decolorizing the hair and brightening the background color of the hair to make it more vivid. These foam hair dyes can dye hair relatively completely and have a long lasting hair dye effect.

However, the above foam type hair dye has a problem in that the amount of some dyes necessary for producing the dyeing effect exceeds the solubility at room temperature of the solvent, thereby not sufficiently exhibiting the dyeing effect. In particular, in the case of the foaming hair dye, unlike the general cream hair dyeing agent, such a problem is serious because the amount of dye is usually increased more than twice to increase the dyeing power.

In addition, the conventional foaming hair dye has a problem that the dyeing hair having a color desired by the user is not expressed or uniform dyeing is not made even if the dye is made by using a substitute dye.

It is an object of the present invention to provide a foaming hair dye having a high solubility of dyes so that a user can express a desired color.

An object of the present invention is to provide a foaming hair dye that can be dyed in a uniform color throughout the hair.

The present invention includes a first agent comprising a solvent, a dye contained in excess of the solubility at room temperature in the solvent and an amphoteric surfactant for increasing the solubility of the stomach dye; And a second agent comprising hydrogen peroxide, wherein the dye in the first agent is not precipitated but is completely dissolved to provide a foaming hair dye.

The present invention provides a foaming hair dye wherein the dye is at least one diamine organic dye selected from the group consisting of toluene diamine sulfate and nitro phenylene diamine.

The present invention provides a foaming hair dye wherein the amphoteric surfactant is at least one betaine-based surfactant selected from the group consisting of cocoamido propyl betain and lauryl betain.

The present invention provides a foaming hair dye in which the weight ratio of the stomach dye to the amphoteric surfactant is 1: 1-5.

The present invention is the above, the dye contained in excess of the solubility at room temperature to the solvent is toluene diamine sulfate contained in 0.6 to 5% by weight of the first agent and the amphoteric surfactant is 3 to 3 of the first agent It provides a foaming hair dye which is 10% by weight of cocoamido propyl betain (Cocoamido propyl betain).

The present invention comprises the steps of preparing a dispersion of 50 to 90 ℃ containing a solvent; Adding at least one diamine organic dye selected from the group consisting of toluene diamine sulfate and nitro phenylene diamine to a dispersion at or above solubility at room temperature; And adding at least one betaine-based surfactant selected from the group consisting of cocoamido propyl betain and lauryl betain to the dispersion such that the dispersion is free of precipitate at room temperature. It provides a method for producing a foam hair dye.

In the present invention, the diamine-based organic dye is toluene diamine sulfate contained in 0.6 to 5% by weight in the dispersion and the betaine-based surfactant is cocoaido propyl betain (Cocoamido propyl betain) contained in 3 to 10% by weight of the dispersion It provides a method for producing a type hair dye.

Foam hair dye of the present invention may contain a dye more than its solubility necessary to express the hair color desired by the user.

Foam hair dye of the present invention can implement a superior color.

The foaming hair dye of the present invention is particularly useful when harmful dyes such as paraphenylenediamine are difficult to be used by regulation, so that dyes having low solubility should be used.

Foam hair dye of the present invention is a uniform mixture of dyes can be uniformly dyed hair as a whole.

Amphoteric surfactants of the present invention increase the solubility of the dye while minimizing hair damage and scalp irritation after dyeing.

Figure 1a shows a first agent of a foaming hair dye comprising cocamidopropyl betaine, an amphoteric surfactant according to the present invention.
FIG. 1B shows the first agent of the foaming hair dye which does not contain the amphoteric surfactant cocamidopropyl betaine.

The present invention relates to a foam hair dye, and more particularly, to a solvent, a dye included in excess of solubility in the solvent, and a first agent comprising an amphoteric surfactant to increase the solubility of the dye. By dissolving the above dye in the first agent completely without dissolution, it is possible to exert sufficient dyeing effect, make uniform dyeing all over the hair, and relieve scalp and skin irritation effect by using relatively safe dye. Genie relates to a foam type hair dye.

Hereinafter, the present invention will be described in detail.

The solvent included in the foaming hair dye of the present invention is not particularly limited as long as it can dissolve a dye to be described later, and may be commonly used. Purified water, ionized water or ethanol, propyl alcohol, isopropyl alcohol, propylene glycol, hexylene Glycol or dimethylglycol may be used and the like may be used to account for the remaining content except for the other components constituting the first agent.

The dye included in the foaming hair dye of the present invention is a diamine organic dye, p-phenylenediamine, m-phenylenediamine, o-phenylenediamine, p-nitro-o-phenylenediamine, n-phenyl-p -Phenylenediamine, 4-epoxy-m-phenylenediamine, toluene diamine sulfate, nitro phenylene diamine and the like can be used, more preferably at least one selected from the group consisting of toluene diamine sulfate and nitro phenylene diamine It is preferable to use dyes. When the dye is used in combination with the amphoteric surfactant included in the present invention to be described later, the solubility of the dye contained in the solvent is increased to prevent the dye from depositing at room temperature where the hair dye is applied to the hair. Accordingly, the dye can be sufficiently applied to the hair to form a dyed hair having a desired color sense as well as to perform dyeing with a short time while having the same dyeing effect.

Toluene diamine sulphate is more specifically toluene-2,5-diamine sulphate. It is a substitute for para-phenylene diamine (PPD), a strong alkaline dye that irritates skin and conjunctiva due to its high irritation and toxicity.It has the advantage of excellent pigmentation effect without damaging the scalp. Mainly used as a dye to express blackish brown. Toluene-2.5 diamine sulphate has a large molecular structure, so that it is difficult to color, but by using an amphoteric surfactant, which will be described later, toluene-2,5 diamine sulphate particles can be drawn into the hair to enhance dyeing effect.

Nitro phenylene diamine is more specifically 4-Nitro-o-Phenylendiamine. It is a dye that expresses brown color when dyed and is mixed with various dyes to realize various hair colors. It is a kind of basic dye.

The content of toluene diamine sulfate according to the present invention may be included in the amount of 0.6% to 5% by weight of the first agent when the solvent is purified water or ionized water, preferably 1 to 3% by weight. If the content is less than 1% by weight it is difficult to achieve the expected dyeing effect, if the content exceeds 5% by weight may not be included as the normal content of the other components may not be properly hair dye effect.

In addition, the content of nitro phenylene diamine according to the present invention may be included in 0.05 to 1% by weight of the first agent, preferably 0.06 to 0.08% by weight based on when the solvent is purified water or ionic water. If the content is less than 0.05% by weight, it is difficult to show the expected dyeing effect, and when it exceeds 1% by weight, color coordination with other included dye components may not be properly achieved, and thus the desired dyeing hair may not be expressed.

In general, surfactants used in hair dyes are cationic surfactants, anionic surfactants, amphoteric surfactants, nonionic surfactants and surfactants thereof, and the surfactants included in the foaming hair dye of the present invention are both Among the surfactants, it is preferable to use a betaine-based surfactant, an imidazoline-based surfactant, or a mixture thereof. As the betaine-based surfactant, it is preferable to use cocoamido propyl betain, lauryl betain or a mixture thereof, and more preferably cocoamidopropyl betaine.

Cocoamidopropyl betaine is an amphoteric surfactant extracted from natural coconut, and when the cocoamidopropyl betaine is added to the solvent constituting the first agent, it is a diamine organic dye according to the present invention, p-phenylenediamine, m- With phenylenediamine, o-phenylenediamine, p-nitro-o-phenylenediamine, n-phenyl-p-phenylenediamine, 4-epoxy-m-phenylenediamine sulfate, toluene diamine sulfate and nitro phenylene diamine Reaction with one or more dyes selected from the group consisting of to increase the solubility at room temperature (25 ℃) to these solvents, so that the dyeing required during hair dyeing is completely dissolved in the solvent without precipitation, the user wants a sense of color Make sure that it is sufficiently expressed and that uniform dyed hair is formed. In addition, since it also serves as a conditioning agent to keep the hair texture healthy, hair damage after dyeing can be minimized.

The amount of the amphoteric surfactant according to the present invention may be included in 3 to 10% by weight of the first agent, preferably 5 to 7% by weight. If it is less than 3% by weight solubility of the dye is very low can not expect a distinct dyeing effect, if it exceeds 10% by weight excessive dye may interfere with the absorption of the hair dye of the hair due to the use of the hair dye can be lowered in the above range It is preferable to use.

In the present invention, as the diamine organic dye, p-phenylenediamine, m-phenylenediamine, o-phenylenediamine, p-nitro-o-phenylenediamine, n-phenyl-p-phenylenediamine, sulfuric acid The at least one dye and the amphoteric surfactant selected from the group consisting of 4-epoxy-m-phenylenediamine, toluene diamine sulfate and nitro phenylene diamine preferably have a mixing ratio of 1: 1-5 in weight ratio, more preferably. Preferably 1: 1.1-1.3. This is because the necessary dissolution of the dye in the above range occurs properly, and other components to be included are included in the normal content so that the hair dye effect can be properly performed.

Foam hair dye of the present invention includes an anionic surfactant as a foaming agent, and those commonly used in the art can be used without limitation. For example, carboxylate compounds, higher alcohols, higher alkyl ethers, sulfate ester salt compounds sulphated olefins, sulfate compounds containing alkylbenzenesulfonates, phosphate compounds phosphorylated with higher alcohols or higher alcohols, such as monoisopropanol ammonium Ammonium salts neutralized with triethanolamine and the like. More specifically, sodium lauryl sulfate, sodium lauryl ether sulfate, linear alkylbenzene sulfonate, monoisopropanol ammonium lauryl ether sulfate, monoalkyl phosphate, acyl isionate, alkyl glyceryl ether sulfonate, acyl glutamate, acyl It is preferably one or a mixture of two or more selected from the group consisting of taurate and fatty acid metal salts, but is not limited thereto.

The amount of the above foaming agent may be 0.01 to 30% by weight relative to the total weight of the hair dye, and preferably 15 to 25% by weight. If the content is less than 0.01% by weight, the effect on the formulation as a foaming hair dye is very small. If it exceeds 30% by weight, it is preferable to use it in the above range because it does not form properly by inhibiting the oxidation polymerization reaction of the dye.

Foam type hair dye comprising the foaming agent of the present invention is dyed in a fine foam to promote the oxidation of the oxidizing agent and to allow hair dyeing in a short time, and the hair dye to reach the hair root by the delicate foam without dyeing Ensure uniform dyeing. In addition, the hair dye does not flow down due to the delicate foam, which improves the spreadability of the hair dye.

In general, an oxidative hair dye such as the foamed hair dye of the present invention contains a conventional oxidized dye precursor and a coupler, and preferably oxidizes a first agent comprising two or more oxidized dye precursors and a coupler, and an oxidizing precursor dye. And a two-component kit of a second agent containing an oxidizing agent for

As the oxidized dye precursor and coupler, most of the known oxidized dye precursors and couplers can be used. The kind of the oxide dye precursor is not particularly limited, but o-aminophenol, p-phenylenediamine, p-phenylenediamine hydrochloride, toluene-2,5-diamine, p-phenylenediamine sulfate, p sulfate Methylaminophenol, sulfuric acid o-aminophenol, p-aminophenol sulfate, toluene-2,5-diamine sulfate or p-phenylenediamine sulfate, and the like, and the like. The content of the oxidized dye precursor is preferably 1 to 5% by weight based on the total weight of the hair dye composition, and more preferably 1 to 3% by weight.

As the coupler, 2-methyl-5-hydroxyethyl aminophenol, p-amino-o-cresol, m-aminophenol, 2,4-diaminophenoxyethanol hydrochloride, m-phenylenediamine hydrochloride, m -Phenylenediamine, α-naphthol, resorcinol or 2-methylrisinosinol and the like can be used and the type and combination are not limited. It can be used in admixture with gastric oxidant precursors to give the hair a variety of shades.

The foaming hair dye of the present invention may further include direct dyes which are commonly used within the scope of not impairing the object of the present invention. Such direct dyes include aryanol dyes and p-nitro-o-phenyl. Rendiamine, nitro-p-phenylenediamine, 2-amino-4nitrophenol, 2-amino-5-nitrophenol, nitro-p-phenylenediamine hydrochloride, heptamic acid or other vegetable dyes, and the like can be used. have.

Moreover, the component normally used for a hair dye can be used for the 1st agent of the foam type hair dye of this invention within the range which does not impair the effect of this invention. For example, water-soluble moisturizers, antioxidants, metal sequestrants, alkali agents, thickeners, fragrances, conditioning agents and solvents may be used.

As the water-soluble moisturizer that can be used in the present invention, any one or two or more of them may be used in the group consisting of glycol ethers such as propylene glycol, hexylene glycol and diethyl glycol. The usable content may be 0.01 to 10% by weight relative to the total weight of the hair dye composition, and more preferably 0.5 to 5% by weight.

In addition, the above antioxidant is not particularly limited as long as it can be commonly used in hair dyes, and examples thereof include butylhydroxyanisole, dibutylhydroxytoluene, tertiarybutylhydroquinone or tocopherols. The silver hair dye composition may be 0.01 to 8% by weight based on the total weight, more preferably 0.5 to 3% by weight.

The metal blocking agent is not particularly limited as long as it can be conventionally used for the hair dye, and examples thereof include EDTA, disodium ID, tetrasodium-ID, or pentasodium pentitate. The preferred content may be 0.01 to 5% by weight relative to the total weight of the hair dye composition, more preferably 0.05 to 1% by weight.

The alkali agent is not particularly limited as long as it is pH 6 or more and can be used for the hair dye, and examples thereof include sodium hydroxide, potassium hydroxide, ammonia water, monoethanolamine or aminomethylpropanol. It is more preferable that such alkali chemicals have a pH in the range of 6-12.

As the thickener, a higher alcohol having 12 to 22 carbon atoms may be used alone or in combination, a polymer thickener, a nonionic polymer, an anionic polymer, paraffin, or a hard flow isoparaffin may be used, and the preferred content is based on the total weight of the hair dye composition. It may be 0.01 to 5% by weight and more preferably 0.05 to 3% by weight.

As the conditioning agent, a cationic polymer, a quaternized ammonium salt, silicone, or the like may be used, and a preferable content may be 0.01 to 5 wt% with respect to the total weight of the hair dye composition, and more preferably 0.05 to 3 wt%.

On the other hand, the oxidizing agent contained in the second agent of the foam hair dye according to the present invention may be used at least one selected from hydrogen peroxide, urea peroxide, alkali metal bromate, ferricyanide, perborate or persulfate, which are commonly used. Although not limited thereto, it is preferable to use 20 to 40% of hydrogen peroxide.

In addition, components commonly used in hair dyes can be used in the second agent within a range that does not impair the effects of the present invention. For example, paraffin, a light fatty acid alcohol such as hard isoparaffin, a higher fatty acid ester emulsion, a stabilizer such as phenacetin, a metal blocking agent such as disodium ethane, a pH adjuster such as phosphoric acid, and the like may be contained.

Method for producing a foam type hair dye according to the present invention comprises the steps of (1) preparing a hydrophilic mixture by heating a hydrophilic mixture, such as solvents, antioxidants and metal sequestrants to 50 to 90 ℃ by dispersing with a homogenizer; (2) adding and mixing the dye, oxide dye precursor, and dye including the coupler of claim 1 to the hydrophilic mixture; (3) dispersing and adding a lipophilic mixture such as a stabilizer, a hair softener, and a hair nutrient to the hydrophilic mixture to which the dye is added by a homogenizer while maintaining 50 to 90 ° C; And (4) beta which increases the solubility of at least one dye selected from the group consisting of diamine sulfate and nitro phenylene diamine contained in excess of solubility at room temperature in any one of steps (1) to (3). And adding a phosphorus amphoteric surfactant.

The manufacturing process of the foam type hair dye including the amphoteric surfactant which increases the solubility of the diamine organic dye of the present invention is as follows. First, the process of preparing a hydrophilic mixture as a hair dye base liquid is performed. The hair dye base solution preparation process first forms a homogeneous mixture containing a solvent, an antioxidant, and a metal blocking agent, and then includes a dye. Thus, water and antioxidants such as ammonium thioglycolate, solvents such as ethanol, and metal sequestrants such as disodium ethane in the container at 50 to 90 ° C. were used for 10 minutes to 30 minutes. Stir for minutes. Stirring here and after may be applied, for example, at a speed of 20 to 40 rpm.

Then, to the hydrophilic mixture, one or more dyes and oxide dye precursors and couplers selected from the group consisting of diamine organic dyes, for example, toluene diamine sulfate and nitro phenylene diamine, to increase the solubility in the present foaming hair dye, Stir for 5-15 minutes.

Subsequently, the hydrophilic mixture to which the dye is added is kept at 50 to 90 ° C., and lipophilic agents such as stabilizers such as glyceryl stearate and hair softeners such as dimethicone and hair nutrients such as hydrolyzed keratin Add the material and stir for 10-30 minutes.

Betaine-based amphoteric to increase the solubility of at least one diamine organic dye selected from the group consisting of diamine sulfate and nitro phenylene diamine in excess of solubility at room temperature in any one of the steps of preparing the foam type hair dye. Surfactants, such as cocoamido propyl betaine and lauryl betaine, are added to at least one selected from the group consisting of foaming hair dyes.

A method of using the foam hair dye according to the present invention is briefly described as follows. When the first agent of the foam hair dye of the present invention and the oxidant which is the second agent containing 28% concentration of hydrogen peroxide are mixed into the container and stirred slowly, foaming occurs naturally. Gently apply the generated bubbles to the hair, leave for 7 to 15 minutes, and then rinse with normal shampoo and water.

The present invention will be described in more detail by the following examples and experimental examples. However, the following Examples and Experimental Examples are only to help understanding of the present invention, and the scope of the present invention is not limited by the following Examples and Experimental Examples.

Examples and Comparative Examples

Soluble to water (TDS is 1.2, NPDA is 0.1) by containing 1.8% and 0.4% by weight of the dyes toluene-2,5-diaminesulfate (TDS) and 4-nitro-O-phenylenediamine (NPDA) Or less) to prepare a first agent of the foam type hair dye of Examples and Comparative Examples of Table 1 to be included in excess.

          Ingredient Name (wt%)     Example     Comparative example        Sodium Lauree Sulfate      25.0     25.0        Cocamidopropyl Betaine      5.0      -        Toluene-2,5-diaminesulfate      1.8     1.8        o-aminophenol      0.8     0.8        m-aminophenol      0.2     0.2        4-amino-2 hydroxytoluene      0.03     0.03        4-nitro-O-phenylenediamine      0.4     0.4        Potassium hydroxide      1.8     1.8        Ethanolamine      4.0     4.0        Lauric Acid      5.0     5.0        Mystic Acid      5.0     5.0        Hydrolyzed Collagen      2.0     2.0        Hydrolyzed keratin      1.0     1.0        Dimethicone      1.0     1.0        Ammonium thioglycolate      0.8     0.8        Disodium iodide      0.1     0.1        Combination incense      0.4     0.4        Purified water      Balance     Balance        system      100     100

After preparing the first agents of the Examples and Comparative Examples at room temperature (25 ℃) for a certain time it was confirmed whether toluene-2,5-diamine sulfate and 4-nitro-O-phenylenediamine precipitated.

As a result, as shown in FIG. 1A, the two dyes were not precipitated in the case of the example, whereas in the comparative example, the precipitation of these two dyes was sunk as in FIG. 1B.

That is, the embodiment containing 5% by weight of amphoteric surfactant, cocamidopropyl betaine to increase the solubility of the dye, unlike the comparative example can be dissolved only about 0.548g at room temperature based on the purified water (45g) as a solvent Toluene-2,5-diamine sulfate was dissolved in an amount of more than three times its solubility, and 4-nitro-O-phenylenediamine in which only about 0.045 g was dissolved was dissolved in an amount of nearly 10 times its solubility. It became.

Experimental Example

The dyeability and hair damage of the foamed hair dyes in which the first agents prepared in Examples and Comparative Examples were respectively mixed with the second agent of Table 2 were evaluated in the following manner.

         Ingredients    Content (% by weight)        Cetearyl alcohol       3.0        Hard Flow Isoparaffin       1.0        paraffin       1.5        Polyoxyethylene lauryl ether       0.5        Polyoxyethylene stearyl ether       0.5        Phenacetin       0.05        Tetrasodium IDT       0.25        Phosphoric Acid       0.17        Hydrogen peroxide (28%)       15.0        Purified water       Balance        system       100

<Dyeing evaluation>

100 g of each of the foam hair dyes prepared in this test example was taken and evenly applied to 15 cm long human hair. After the coating was left for 30 minutes, it was washed for 2 minutes in running water using a shampoo solution and dried using a hair dryer. The dried hair was measured for color using a colorimeter (hunter model Labscan XE). The color difference measurement was recorded after the average of three repeated measurements for each hair and the results are shown in Table 3 below.

     division     Example     Comparative example    Intended brightness value Brightness (L ^* ) 12.41 15.83 13

Hair dyes according to the embodiment, as shown in Table 3, the L ^* value of the hair dye according to almost the same compared to the value 13, while the intended dyeing simulated brightness example toluene-2,5-diamine sulfate, and 4-nitro-phenylene -O- The diamine did not dissolve sufficiently and showed 15.83, which is much larger than the reference L ^* value.

<Hair damage evaluation>

The hair that evaluated the dyeability above was compared to 10 professional panelists according to the following criteria. The result was confirmed that the Example is excellent as shown in Table 4.

      division    Example    Comparative example Hair texture      ◎     △

◎: very soft, ○: soft, Δ: normal, Ｘ: rough.

Claims (12)

A first agent comprising a solvent, a dye contained in excess of the solubility at room temperature in the solvent, and an amphoteric surfactant for increasing the solubility of the dye; And a second agent comprising hydrogen peroxide,
In the first agent, the dye is a foaming hair dye that does not precipitate but is completely dissolved.
The foam hair dye of claim 1, wherein the dye is at least one diamine organic dye selected from the group consisting of toluene diamine sulfate and nitro phenylene diamine.
The anti-foaming hair dye according to claim 1, wherein the amphoteric surfactant is at least one betaine-based surfactant selected from the group consisting of cocoamido propyl betain and lauryl betain.
The foaming hair dye of claim 1, wherein a weight ratio of the dye to the amphoteric surfactant is 1: 1-5.
The method of claim 1, wherein the room temperature is 25-30 ℃ foam type hair dye.
The foam hair dye of claim 1, wherein the solvent is purified water, ionized water or ethanol.
The method of claim 1, wherein the dye contained in excess of the solubility at room temperature to the solvent is toluene diamine sulfate contained in 0.6 to 5% by weight of the first agent and the amphoteric surfactant is 3 to 3 in the first agent 10 wt% Cocoamido propyl betain (Cocoamido propyl betain) is a foaming hair dye.
The foam hair dye of claim 1, further comprising an anionic surfactant.
Preparing a dispersion of 50 to 90 ° C. containing a solvent;
Adding at least one diamine organic dye selected from the group consisting of toluene diamine sulfate and nitro phenylene diamine to the dispersion at or above solubility at room temperature; And
Adding at least one betaine-based surfactant selected from the group consisting of cocoamido propyl betain and lauryl betain to the dispersion such that the dispersion is free of precipitate at room temperature
Method of producing a foam hair dye comprising a.
The method according to claim 9, wherein the dispersion of 50 to 90 ℃ containing the solvent is a method of producing a foam hair dye in which an antioxidant and a metal blocking agent is dissolved in a solvent.
The method of claim 9, wherein the weight ratio of the dye to the amphoteric surfactant is 1: 1-5.
The method of claim 9, wherein the diamine-based organic dye is toluene diamine sulfate contained in 0.6 to 5% by weight in the dispersion and the betaine-based surfactant is 3 to 10% by weight of cocoamido propyl betaine (Cocoamido propyl) betain) foaming hair dye manufacturing method.

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