JP2017109951A - Hair dye - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a non-oxidative hair dye capable of adjusting the hair after dyeing to the natural hair color and giving a finish with natural color tones while having an excellent hair dyeing effect and a white hair concealing effect.SOLUTION: There is provided a hair dye which is constituted by comprising at least a first agent, a second agent and a third agent, wherein the first agent contains at least one selected from the group consisting of gallic acid, tannic acid and a derivative thereof, the second agent contains an iron salt, the third agent contains salicylic acid and a derivative thereof and the third agent is applied to the hair after the first agent and the second agent.SELECTED DRAWING: None

Description

  The present invention relates to a non-oxidative hair dye and a hair dyeing method using the same.

  The permanent hair dye is a hair dye that gives a permanent dyeing result to the hair. As a permanent hair dye, conventionally, a first agent containing an oxidative dye such as paraphenylenediamine and an alkali agent and a second agent containing an oxidant such as hydrogen peroxide are used in combination. Hair dyes are generally widely used. However, the oxidized hair dye may damage the hair due to the action of the alkaline agent and the hydrogen peroxide solution. Some oxidative dyes can also cause strong allergic reactions.

  In recent years, various types of non-oxidative hair dyes have been proposed in order to solve problems that may occur in such oxidized hair dyes. For example, the reaction of polyhydric phenols with metal salts. Hair dyes for hair dyeing are known (see Patent Documents 1 to 7). A photobleaching comprising a combination of a first agent containing a substance that develops color by reacting with iron, such as tannic acid, gallic acid and derivatives thereof, and a second agent containing an iron salt. A non-oxidative hair dye having a preventive effect has also been proposed (Patent Document 8). Furthermore, the hair dye consisting of a first agent containing a color former that reacts with metal ions and a second agent containing a metal salt is selected from the group consisting of HC dyes, basic dyes and direct dyes. A hair dye containing a dye has been proposed (Patent Document 9).

Japanese Patent Publication No. 48-31902 JP-A-53-52633 JP-A-55-154912 JP-A-62-33113 JP-A 64-90117 Japanese Patent Laid-Open No. 4-164017 JP-A-5-170629 JP 2011-126845 A JP 2013-95734 A

  However, all of the conventional non-oxidative hair dyes disclosed in the above-mentioned patent documents require a long time for hair dyeing or repeated hair dyeing. The color tone and white hair combing effect were not always satisfactory. In particular, when tannic acid, gallic acid and their derivatives are combined with iron salts, increasing the tint to sufficiently dye white hair tends to increase the bluish color of the hair after dyeing. It was difficult to give a fine finish.

  An object of the present invention is to provide a non-oxidative hair dye capable of adjusting the hair after dyeing to a natural hair color and giving a natural color finish while having an excellent hair dyeing effect and a gray hair combing effect. Is to provide.

The inventors of the present invention have studied in detail to solve the above problems, and have completed the present invention. That is, the present invention includes the following preferred embodiments.
[1] A hair dye comprising at least a first agent, a second agent and a third agent,
The first agent includes at least one selected from the group consisting of gallic acid, tannic acid, and derivatives thereof,
The second agent contains an iron salt,
The third agent includes at least one selected from salicylic acid and derivatives thereof,
A hair dye wherein the third agent is applied to the hair after the first and second agents.
[2] The hair dye according to [1], further including a fourth agent containing an iron salt.
[3] The hair dye according to [1] or [2], including applying the third agent after applying the first agent and the second agent to the hair in this order or simultaneously. Hair dyeing method.

  According to the present invention, a non-oxidative hair dye capable of adjusting the hair after dyeing to a natural hair color and giving a natural color finish while having an excellent hair dyeing effect and a gray hair combing effect. Can be provided.

  Hereinafter, embodiments of the present invention will be described in detail. Note that the scope of the present invention is not limited to the embodiment described here, and various modifications can be made without departing from the spirit of the present invention.

  The hair dye of the present invention comprises at least a first agent, a second agent, and a third agent. The first agent contained in the hair dye of the present invention contains at least one selected from the group consisting of gallic acid, tannic acid, and derivatives thereof. Gallic acid, tannic acid and their derivatives are components that react with iron to develop color. In the hair dye of the present invention, gallic acid, tannic acid and / or their derivatives contained in the first agent during hair dyeing And the iron salt contained in the second agent react to produce a hair dyeing effect.

  Examples of tannic acid include hydrolyzed tannin and condensed tannin. Examples of the hydrolyzable tannin include tannin obtained from pentaploid, gallic, smack, cod, chestnut, mylobaran, oak, dividi, algarovia, geno shoko and the like. Examples of the condensed tannin include tannin obtained from Gambia, Gebracho, Mimosa, Mangrove, Hemlock, Spruce, Burma Katchi, Oak Bark, and Astringent Astringent.

  Examples of gallic acid derivatives include alkyl esters of gallic acid. Examples of the alkyl ester of gallic acid include esters of gallic acid and linear or branched alkyl having 1 to 10 carbon atoms, preferably 2 to 5 carbon atoms. Examples of such alkyl esters include ethyl gallate, propyl gallate, and isoamyl gallate. Gallic acid or a derivative thereof may be chemically synthesized by a known method or may be isolated from a plant. What further added chemical synthesis to what was isolated from the plant may be used. Moreover, you may use the extract obtained from the plant containing a gallic acid or its derivative (s) as it is. For example, gallic acid derived from leguminous plant cod, gallic acid derived from pentaploid occurring in urchinaceae, or extracts containing them. In addition, derivatives obtained by chemically esterifying those gallic acids can also be used.

  These gallic acid, tannic acid and their derivatives may be used alone or in combination of two or more. Since the hair dyeing effect and the gray hair combing effect can be further enhanced by including gallic acid, the first agent preferably includes gallic acid.

  The content of at least one selected from the group consisting of gallic acid, tannic acid and derivatives thereof in the first agent is preferably 0.1 to 10% by mass with respect to the total amount of the first agent, More preferably, it is 0.5-6 mass%. When multiple types of gallic acid, tannic acid and derivatives thereof are included, the total amount is preferably within the above range. When the content of at least one selected from the group consisting of gallic acid, tannic acid and derivatives thereof is within the above range, a good hair dyeing effect and a gray hair combing effect can be obtained.

  In the present invention, the first agent is at least one selected from the group consisting of gallic acid, tannic acid, and derivatives thereof, and at least one organic compound that develops color by reacting with iron and / or the organic It may contain at least one plant extract containing the compound. Such organic compounds and plant extracts include, for example, pentaploid, pyrogallol, logwood, hematein, catechol, salicylic acid and its derivatives, phthalic acid, eugenol, isoeugenol, nicotinamide, dehydroacetic acid, pyridoxine, ellagic acid, Kojic acid, maltol, ferulic acid, hinokitiol, turmeric extract, curcumin, ougon extract, onion extract, quercetin, rutin, hesperetin, hesperidin, raw coffee bean extract, caffeic acid, chlorogenic acid, tea extract, catechin, epicatechin, chicon extract, Perilla extract, perilla extract, grape leaf extract, butto extract, enocyanin, laccaic acid, lac, cochineal, carminic acid, elderberry, red cabbage, purple potato, tamarind, cucumber Mention may be made of down, Apigeninijin, Ruteorinijin and the like. Among these, salicylic acid and its derivatives are preferable as the organic compound and the plant extract from the viewpoint of enhancing the hair dyeing effect.

  In addition to at least one selected from the group consisting of the gallic acid, tannic acid and derivatives thereof, the first agent contains at least one organic compound that develops color by reacting with iron and / or the organic compound When at least one kind of plant extract is included, the content thereof is preferably 0.1 to 5% by mass, more preferably 0.2 to 3% by mass with respect to the total amount of the first agent. .

  The first agent in the hair dye of the present invention may contain urea. When the first agent contains urea, the content is preferably 1% by mass or more, more preferably 3% by mass or more based on the total amount of the first agent. When the first agent contains 1% by mass or more of urea, a hair dye having a higher hair coloring effect and a gray hair combing effect can be obtained. The upper limit of the urea content is preferably 20% by mass or less, and more preferably 10% by mass or less, from the viewpoint of the stability of the first agent.

  In the hair dye of the present invention, the pH of the first agent is preferably 6 to 10, more preferably 7 to 9, from the viewpoint of the hair dyeing effect and the stability of the agent.

  The 2nd agent contained in the hair dye of this invention contains an iron salt. The iron salt reacts with at least one selected from the group consisting of gallic acid, tannic acid and derivatives thereof contained in the first agent to develop a color and fix the pigment on the hair.

  Examples of iron salts include ferrous sulfate, ferrous chloride, ferrous acetate, ferrous phosphate, ferrous oxalate, ferric sulfate, ferric chloride, and ferric acetate. Can be mentioned. From the viewpoint of the hair dyeing effect, the second agent contains at least one iron salt selected from the group consisting of ferrous sulfate, ferrous chloride, ferrous acetate, ferric sulfate and ferric chloride. Preferably, it contains at least one iron salt selected from the group consisting of ferrous sulfate, ferrous chloride and ferrous acetate. These iron salts may be used individually by 1 type, and may be used in combination of multiple types.

  The content of the iron salt in the second agent may be appropriately determined within the range where the effects of the present invention are exerted, but preferably 0 based on the total amount of the second agent from the viewpoint of the stability of the agent and the hair dyeing effect. It is 5-10 mass%, More preferably, it is 1-6 mass%.

  In the hair dye of the present invention, the pH of the second agent is preferably 2 to 6, more preferably 3 to 5, from the viewpoint of the hair dyeing effect and the stability of the agent.

  The third agent contained in the hair dye of the present invention contains at least one selected from salicylic acid and derivatives thereof. When the third agent contains at least one selected from salicylic acid and derivatives thereof, a high whitening effect can be obtained. In addition, the conventional non-oxidative hair dye tends to have a strong bluish hair after dyeing, and includes at least one selected from salicylic acid and its derivatives after the first agent and the second agent. By using the third agent, the color tone of the hair after dyeing can be adjusted to a natural color tone with reduced bluishness.

  Examples of salicylic acid derivatives include esters and salts of salicylic acid. Examples of the salt of salicylic acid include an alkali metal salt of salicylic acid, and specifically sodium salicylate. Examples of the ester of salicylic acid include linear or branched alkyl esters or phenyl esters having 1 to 10 carbon atoms, and specific examples include octyl salicylate, phenyl salicylate, and methyl salicylate. Among them, salicylic acid and sodium salicylate are preferable because a high gray hair combing effect can be obtained. When the first agent contained in the hair dye of the present invention contains one selected from salicylic acid and its derivatives, at least one selected from salicylic acid and its derivatives contained in the third agent is It may be the same as or different from salicylic acid and its derivatives.

  The content of at least one selected from salicylic acid and derivatives thereof in the third agent is preferably 0.1 to 3% by mass, more preferably 0.2 to 2.5% by mass, based on the total amount of the third agent. %. By including at least one selected from salicylic acid and derivatives thereof in the above range, a high graying effect and a natural color tone with reduced bluish color can be achieved.

  The third agent contained in the hair dye of the present invention is an oil agent from the viewpoint of stably blending at least one selected from salicylic acid and derivatives thereof into the third agent and enhancing the hair dyeing effect and the hair removal effect. It is preferable to contain. Examples of the oil agent include ester oils, hydrocarbon oils, silicone oils, animal and vegetable oils, higher alcohols that are liquid at room temperature, and higher fatty acids that are liquid at room temperature. From the viewpoint of the stability of the third agent, the oil agent preferably contains at least one selected from the group consisting of hydrocarbon oils, ester oils, higher alcohols that are liquid at room temperature, and silicone oils, It is more preferable to contain at least one selected from the group consisting of ester oils. From the viewpoint of stably blending at least one selected from salicylic acid and derivatives thereof into the third agent, it is more preferable to contain a hydrocarbon oil. Examples of the hydrocarbon oil include liquid paraffin, dioctylcyclohexane, α-olefin oligomer, light isoparaffin, light liquid isoparaffin, squalane, polybutene, and liquid isoparaffin.

  When the third agent contains an oil agent, the content of the oil agent is preferably 1% by mass or more, more preferably 3% by mass or more based on the total amount of the third agent from the viewpoint of the stability of the preparation. . Moreover, from a viewpoint of usability, Preferably it is 30 mass% or less, More preferably, it is 15 mass% or less.

  Furthermore, the third agent in the hair dye of the present invention may contain urea. When the third agent contains urea, the content thereof is preferably 1% by mass or more, more preferably 3% by mass or more based on the total amount of the third agent. When the first agent contains 1% by mass or more of urea, a hair dye having a higher hair coloring effect and a gray hair combing effect can be obtained. The upper limit of the urea content is preferably 20% by mass or less, and more preferably 10% by mass or less, from the viewpoint of the stability of the first agent.

  In the hair dye of the present invention, the pH of the third agent is preferably 6 to 10, more preferably 7 to 9, from the viewpoint of the hair dyeing effect and the stability of the agent.

  The hair dye of the present invention may further include a fourth agent containing an iron salt in addition to the first agent, the second agent, and the third agent. In addition to the first agent, the second agent and the third agent, by including a fourth agent containing an iron salt, compared with a hair dye consisting of only the first agent, the second agent and the third agent, It becomes a hair dye which can obtain a higher hair dyeing effect and a white hair combing effect and can give a natural color tone with reduced bluishness. In the hair dye of the present invention, the fourth agent is preferably used after the third agent or simultaneously with the third agent.

  Examples of the iron salt contained in the fourth agent include the same as those exemplified as the iron salt in the second agent. One type of iron salt may be used alone, or a plurality of types may be used in combination. May be. Further, the content of the iron salt in the fourth agent may be appropriately determined within the range where the effects of the present invention are exerted, but is preferably based on the total amount of the fourth agent from the viewpoint of the stability of the agent and the hair dyeing effect. Is 0.5 to 10% by mass, more preferably 1 to 6% by mass.

  In the hair dye of the present invention, the pH of the fourth agent is preferably 2 to 6, more preferably 3 to 5, from the viewpoint of the hair dyeing effect and the stability of the agent.

  In the hair dye of the present invention, the fourth agent may be the same agent as the second agent, for example, an agent different from the second agent in the type and amount of iron salt, other components, etc. Also good.

  In the hair dye of the present invention, the first agent, the second agent, the third agent, and the fourth agent, in addition to the above-described essential components and optional components, respectively, other components commonly used in hair dyes, You may include in the quantity in the range with the effect of this invention. Examples of such components include bases, surfactants, fats and oils, solvents, thickeners, organic acids, preservatives, antioxidants, pH adjusters, wetting agents, fragrances, metal odor masking agents, Colorants, UV absorbers, hair restoration agents, anti-dandruff agents, antibacterial agents, softeners, moisturizers, active oxygen removers, antioxidants, antimicrobial agents, silicones, minerals, hydrolyzed proteins, peptides, amino acids, etc. Can be mentioned.

  Examples of the base include higher alcohols, hydrocarbons, fatty acid esters, vegetable oils, fatty acids and the like. In particular, from the viewpoint of the stability of the preparation, the first agent and the third agent preferably contain a higher alcohol, and at least one higher agent selected from the group consisting of cetostearyl alcohol, cetyl alcohol, stearyl alcohol and behenyl alcohol. It is more preferable to contain alcohol. The higher alcohol content in the first agent and the third agent is preferably 1% by mass or more, more preferably 3%, based on the total amount of the first agent or the third agent, from the viewpoint of the stability of the preparation. It is at least mass%. Moreover, from a viewpoint of usability, Preferably it is 20 mass% or less, More preferably, it is 10 mass% or less.

  Examples of the surfactant include an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and a cationic surfactant. Examples of the nonionic surfactant include polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene alkyl ether, glycerin fatty acid ester, polyglycerin fatty acid ester, polyethylene glycol fatty acid ester, and alkyl glucoside. Examples of the anionic surfactant include polyoxyethylene alkyl ether phosphate and salts thereof, N-acyl amino acid salts, alkyl ether carboxylates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, sulfonates, and the like. Can be mentioned. Examples of the cationic surfactant include alkyl ammonium salts. Examples of amphoteric surfactants include alkylamidopropylbetaine.

  In particular, in the hair dye of the present invention, from the viewpoint of the stability of the preparation, the first agent and the third agent preferably contain at least one nonionic surfactant, and contain polyoxyethylene alkyl ether. More preferably. In that case, the content of the nonionic surfactant is preferably 0.1 to 10% by mass, more preferably 1 to 7% by mass, based on the total amount of the first agent or the third agent. .

  Examples of the antioxidant include ascorbic acid and derivatives thereof, sodium sulfite and the like.

  Examples of the pH adjuster include citric acid, phosphoric acid, ammonia, ammonium hydrogen carbonate, ammonium carbonate, potassium hydroxide, sodium hydroxide, monoethanolamine, isopropanolamine, ammonium phosphate, diammonium monohydrogen phosphate, citric acid. Examples thereof include sodium acid, ammonium citrate, potassium phosphate, and sodium phosphate.

  Examples of the wetting agent include 1,3-butylene glycol, propylene glycol, glycerin, sorbitol, sodium pyrrolidonecarboxylate, amino acid, vegetable oil, and the like.

  Examples of the thickener include xanthan gum, polyethylene glycol, hydroxyethyl cellulose and the like.

  Examples of the solvent include water, ethanol, isopropyl alcohol, 1,3-butylene glycol, 1,2-pentanediol, 2-methyl-2,4-pentanediol, glycerin, diglycerin, propylene glycol, dipropylene glycol, Examples thereof include benzyl alcohol.

  The dosage form of the first agent, the second agent, the third agent, and the fourth agent contained in the hair dye of the present invention is not particularly limited. For example, cream, liquid, gel, emulsion, spray, aerosol It can be made into a dosage form such as a mold. All agents may be in the same dosage form or may be in different dosage forms. From the viewpoint of usability and stability, the first agent and the third agent are preferably creams or gels. From the viewpoint of usability, the second agent and the fourth agent are preferably creams or gels.

  The preparation method of the 1st agent, the 2nd agent, the 3rd agent, and the 4th agent contained in the hair dye of this invention is not specifically limited, It can manufacture by a normal method.

Hair coloring can be performed by applying the first agent, the second agent and the third agent contained in the hair dye of the present invention, and, if included, the fourth agent to the hair.
The hair dye of the present invention is prepared by first applying a first agent containing gallic acid, tannic acid or a derivative thereof and a second agent containing an iron salt to hair, and then selecting at least selected from salicylic acid and derivatives thereof. By applying the 3rd agent containing 1 type, while showing the high hair dyeing effect and the white hair combing effect, the natural color tone which suppressed blueness can be given to the hair after hair dyeing. As a method of applying the first agent and the second agent to the hair, for example, (i) First, apply the first agent to the hair, leave it for a certain period of time, and then apply the second agent without washing away the first agent And (ii) a method in which the first agent and the second agent are simultaneously applied to the hair and left to stand for a certain time, and (iii) a mixture of the first agent and the second agent. Examples include a method of applying the composition to hair and leaving it for a certain period of time. From the viewpoint of the hair coloring effect, the method (i) is preferred as a method of applying the first agent and the second agent to the hair.

  In the present invention, the use ratio of the first agent and the second agent is preferably a first agent: second agent = 1: 0.5-1: 2 in terms of mass ratio, more preferably from the viewpoint of usability. First agent: second agent = 1: 0.8 to 1: 1.2, more preferably 1: 1.

  The first agent and the second agent are applied by the method as described above, and the third agent is applied to the hair. The third agent can be applied without washing away the first agent and / or the second agent. However, since the hair dyeing effect and the gray hair combing effect are enhanced, the first agent and / or before the third agent is applied. Alternatively, it is preferable to wash away the second agent. After applying the third agent, the hair can be dyed by leaving it for a certain period of time. In addition, washing | cleaning of each agent may be performed using a shampoo, and may be performed only by running water.

  When the hair dye of the present invention contains the fourth agent, (iv) after applying the third agent, leave it for a certain period of time, apply the fourth agent without washing away the third agent, and then leave it for a certain period of time. (V) A method in which the third agent and the fourth agent are simultaneously applied to the hair, and the agent is washed after standing for a certain period of time, and (vi) a mixture of the third agent and the fourth agent. For example, the composition may be applied to the hair and allowed to stand for a certain period of time before the agent is washed away. From the viewpoint of the hair dyeing effect, the method (i) is preferred as a method of applying the third agent and the fourth agent to the hair.

  The standing time after applying to the hair is appropriately adjusted depending on the amount applied to the hair, the desired degree of dyeing, and the like. In any of the above methods, the standing time after applying to hair may be, for example, 1 to 60 minutes, preferably 5 to 40 minutes, with each agent applied.

  The amount of the first agent, the second agent, the third agent, and the fourth agent applied to the hair is appropriately adjusted depending on the amount and length of the hair, the desired degree of dyeing, and the like. From the viewpoint of usability, each agent is preferably about 30 to 70 g, more preferably about 40 to 60 g, with respect to hair having a length of about 20 cm. In one aspect of the present invention, 50 g of the first agent, the second agent, the third agent, and the fourth agent may be applied to hair having a length of about 20 cm. From the viewpoint of burden on the hair and human body, the temperature at the time of application to the hair is preferably preferably 15 to 45 ° C.

  Hereinafter, the present invention will be described more specifically with reference to examples. The scope of the present invention is not limited to the contents of the following examples.

1. Preparation of formulations containing gallic acid, tannic acid or derivatives thereof According to the composition shown in Table 1, formulations of Formulation Examples 1 to 3 and 12 were prepared as follows.
(1) Preparation of preparations of Formulation Examples 1 to 3 Liquid paraffin, cetostearyl alcohol and polyoxyethylene cetostearyl ether 30EO were mixed and dissolved by heating sufficiently as oil phase components. As the aqueous phase component, components other than the oil phase component excluding potassium hydroxide and urea were mixed and sufficiently dissolved by heating. Subsequently, the water phase component was added to the oil phase component heated and dissolved while stirring to emulsify. The obtained emulsion was cooled, and potassium hydroxide in an amount to adjust the pH to 8 and urea dissolved in water were added to obtain each preparation of Prescription Examples 1 to 3.

(2) Preparation of formulation of formulation example 12 A formulation of formulation example 12 was prepared in the same manner as formulation example 1 of (1) above, except that urea was not added.

2. Preparation of preparation containing salicylic acid or benzophenone compound having derivative thereof According to the formulation shown in Table 2, preparations of formulation examples 4 to 11 were prepared as follows.
As the oil phase component, liquid paraffin, cetostearyl alcohol and polyoxyethylene cetostearyl ether 30EO were mixed and sufficiently heated and dissolved. As the aqueous phase component, components other than the oil phase component excluding potassium hydroxide and urea were mixed and sufficiently dissolved by heating. Subsequently, the water phase component was added to the oil phase component heated and dissolved while stirring to emulsify. The obtained emulsion was cooled, and urea dissolved in an amount of potassium hydroxide and water having a pH of 8 was added to obtain each preparation of Prescription Examples 4 to 11.

3. Preparation of preparation containing iron salt According to the prescription shown in Table 3, preparations of prescription examples A to C were prepared as follows.
(1) Preparation of Formulation Examples A and B Preparations As aqueous phase components, ferrous sulfate or ferrous chloride was added to purified water at room temperature, and further, ascorbic acid was added and mixed. As the oil phase component, cetostearyl alcohol and polyoxyethylene cetostearyl ether were mixed and sufficiently dissolved by heating. Subsequently, the water phase component was added to the oil phase component with emulsification and emulsification to obtain the preparations of Formulation Examples A and B. Each of the obtained formulations had a pH of about 3.
(2) Preparation of formulation of formulation example C Ferrous sulfate or ferrous chloride was added to purified water at room temperature, and further ascorbic acid was added and dissolved by stirring to obtain the formulation of formulation example C. Each of the obtained formulations had a pH of about 3.

4). Hair dye evaluation According to the hair dye formulation shown in Table 4, the hair dyes of Examples 1 to 16 and Comparative Examples 1 to 6 in which the combinations of the preparation examples 1 to 12 and the preparations A to C were changed were as follows. According to the method, the hair dyeing effect, the gray hair combing effect, and the color tone after dyeing were evaluated.

(1) Evaluation of hair dyeing effect and color tone 2 g of the first agent was applied to 1 g of shampooed and rinsed hair bundles (white hair rate: 100%) and allowed to stand at 30 ° C. and 65% relative humidity for 15 minutes. Next, 2 g of the second agent was applied and left again at 30 ° C. and 65% relative humidity for 15 minutes. Thereafter, the hair bundle was shampooed and rinsed, and dried with a dryer. Thereafter, 2 g of the third agent was applied and allowed to stand for 15 minutes at 30 ° C. and 65% relative humidity. Next, 2 g of the fourth agent was applied and left again at 30 ° C. and 65% relative humidity for 15 minutes. Thereafter, the hair bundle was shampooed and rinsed, and dried with a dryer.
In Example 12 not containing the fourth agent, the third agent was allowed to stand in the treatment method, and then the hair bundle was shampooed and rinsed, dried with a dryer, and evaluated. Similarly, in Comparative Examples 2, 5 and 6 not containing the third agent and the fourth agent, the second agent was allowed to stand, and then the hair bundle was shampooed and rinsed, dried with a dryer, and evaluated.

  Using the dried hair bundle, the hair dyeing effect and the color tone of the hair after hair dyeing were evaluated as follows.

(Hair dyeing effect)
According to the criteria shown below, the hair dyeing effect was evaluated with the naked eye by five professional panelists. In addition, when the evaluation of 5 panelists was divided into two, the evaluation of the larger one was adopted, and when it was divided into 3 or more, the evaluation was repeated until the evaluation of 5 persons matched or divided into two. .
Evaluation criteria for hair dyeing effect A: Densely dyed hair.
○: Hair was clearly dyed.
Δ: Slightly dyed.
X: Hair was not dyed.

(Color tone)
According to the criteria shown below, the color (strength of red tea) was evaluated with the naked eye by five professional panelists. In addition, when evaluation of five panelists was divided into two or three or more, it evaluated in the same manner as described above. By feeling the red tea taste, the bluish color developed by the reaction of gallic acid, tannic acid or their derivatives and iron salts can be relieved, so that the natural color tone with a reduced bluish appearance is obtained.
Evaluation criteria for hair color tone ◎: Feel red tea ◯: Feel red tea slightly △: Do not feel red tea very much ×: No red tea

(2) Evaluation of white hair combing effect 4 g of the first agent was applied to 2 g of a shampooed and rinsed hair bundle (white hair rate 20%) and left for 15 minutes at 30 ° C. and 65% relative humidity. Next, 4 g of the second agent was applied and left again at 30 ° C. and 65% relative humidity for 15 minutes. Thereafter, the hair bundle was shampooed and rinsed, and dried with a dryer. Thereafter, 2 g of the third agent was applied and allowed to stand for 15 minutes at 30 ° C. and 65% relative humidity. Next, 2 g of the fourth agent was applied and left again at 30 ° C. and 65% relative humidity for 15 minutes. Thereafter, the hair bundle was shampooed and rinsed, and dried with a dryer.
In Example 12 not containing the fourth agent, the third agent was allowed to stand in the treatment method, and then the hair bundle was shampooed and rinsed, dried with a dryer, and evaluated. Similarly, in Comparative Examples 2, 5 and 6 not containing the third agent and the fourth agent, the second agent was allowed to stand, and then the hair bundle was shampooed and rinsed, dried with a dryer, and evaluated.

  Using the dried hair bundle, the gray hair combing effect was evaluated as follows.

(White hair combing effect)
According to the following criteria, the effect of gray hair combing was evaluated with the naked eye by five professional panelists. In addition, when evaluation of five panelists was divided into two or three or more, it evaluated in the same manner as described above.
Evaluation criteria for white hair combing effect ◎: Gray hair is inconspicuous ○: White hair is slightly conspicuous △: White hair is conspicuous ×: White hair is not dyed

  The first agent contains gallic acid, tannic acid or a derivative thereof, the second agent contains an iron salt, the third agent contains salicylic acid or a derivative thereof, and after the first agent and the second agent It was confirmed that the hair dye of the present invention to which the third agent is applied has a high hair dyeing effect and white hair combing effect, and gives a natural color tone with reduced bluishness to the hair after dyeing. Moreover, in the hair dye containing the 4th agent containing iron salt, compared with the hair dye which consists only of the 1st agent, the 2nd agent, and the 3rd agent, in the hair dyeing effect, the white hair combing effect, and the color tone of hair. It was excellent. On the other hand, in the case where the agent containing salicylic acid or a derivative thereof was not applied after the agent containing gallic acid and the agent containing iron salt (Comparative Examples 1 and 2), the hair after dyeing had no red tea taste, An unnatural color with a strong bluish appearance. This tendency was the same in the hair dye (Comparative Example 3) in which the agent containing sodium salicylate was applied before the agent containing gallic acid. Moreover, when the agent containing gallic acid, tannic acid or derivatives thereof was not applied (Comparative Examples 4 and 5), the effect of whitening hair was low, and sufficient effect was not obtained in color tone. Further, a hair dye that contains gallic acid and sodium salicylate in one agent (first agent) and does not apply an agent containing salicylic acid or a derivative thereof after the first agent and the second agent containing the iron salt (comparison) Even in Example 6), a sufficient effect on the color tone was not obtained.

Claims (3)

A hair dye comprising at least a first agent, a second agent and a third agent,
The first agent includes at least one selected from the group consisting of gallic acid, tannic acid, and derivatives thereof,
The second agent contains an iron salt,
The third agent includes at least one selected from salicylic acid and derivatives thereof,
A hair dye wherein the third agent is applied to the hair after the first and second agents.   The hair dye according to claim 1, further comprising a fourth agent containing an iron salt.   The hair dyeing method using the hair dye according to claim 1 or 2, comprising applying the third agent after applying the first agent and the second agent to the hair in this order or simultaneously.