Acidic Dye毛料Composition

Abstract

To provide an acidic hair dye composition that is well absorbed to white hair and has high fastness against a permanent.SOLUTION: An acidic hair dye composition contains an acidic dye containing at least one acidic dye A selected from A1: yellow 406, A2: red 104 (1) and A3: violet 401. The acidic dye includes at least one combination selected from a combination (I) of A1 and A3, a combination (II) of A2 and B9: green 201, and a combination (III) of B4: orange 205 and B8: black 401. In the case of containing the combination (I), the mass ratio between A1 and A3 (A1: A3) is 1: 5-1: 1. In the case of containing the combination (II), the mass ratio between A2 and B9 (A2: B9) is 8: 3-9: 1. In the case of containing the combination (III), the mass ratio between B4 and B8 (B4: B8) is 1: 2-9: 1. Relative to 100 mass% of the total amount of the acidic dye, the ratio of the acidic dye A is 60 mass% or more.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to an acidic hair dye composition. [Background technology]

[0002] Acid hair dye is a one-component coloring agent that is also called hair manicure or acid color. Since acid hair dye does not contain oxidizing agents such as hydrogen peroxide, it is common to dye hair with acid hair dye without bleaching it.

[0003] Hair dyed with acidic hair dyes has the problem that the dye gradually flows out of the hair due to sweat, shampooing, and chemical treatments such as permanent waving, causing the color to fade in as little as a few weeks.

[0004] For example, Patent Document 1 discloses a hair dye composition that contains a specific acid dye in a specific content or ratio, thereby improving the dye fastness and dyeing the hair in a color that looks natural and beautiful even under various lighting conditions.

[0005] Patent Document 2 discloses an acidic hair dye composition that contains a specific acidic dye, an acid, and an aromatic alcohol, thereby improving the dye fastness of hair and reducing discoloration of washing liquid and sweat during hair washing. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2011-157290 A [Patent Document 2] JP 2004-18505 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, in the technology of Patent Document 1, when dyeing gray hair with an acidic hair dye, black hair and gray hair are dyed in different colors, and the gray hair appears undyed, which is a phenomenon known as gray hair floating. In particular, in the dyeing process of hair that contains a mixture of black hair and gray hair, the gray hair does not blend well, and the quality is not satisfactory. In the technique of Patent Document 2, color fading occurs due to permanent wave treatment, and therefore the color fastness is not of satisfactory quality.

[0008] In view of the above, an object of the present invention is to provide an acidic hair dye composition that blends well with gray hair and has high fastness to permanent wave treatment. [Means for solving the problem]

[0009] The present inventors have conducted extensive research to solve the above problems, and as a result have found that an acidic hair dye composition having the following composition can solve the above problems, thereby completing the present invention. The present invention relates to, for example, the following [1] to [8].

[0010] [1] The present invention relates to a composition comprising an acid dye containing at least one acid dye A selected from the group consisting of (A1) Yellow No. 406, (A2) Red No. 104 (1), and (A3) Violet No. 401, and the acid dye includes at least one combination selected from the group consisting of a combination (I) of (A1) Yellow No. 406 and (A3) Violet No. 401, a combination (II) of (A2) Red No. 104 (1) and (B9) Green No. 201, and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401, and the composition includes the combination (I): 1) An acidic hair dye composition in which the mass ratio ((A1):(A3)) of Yellow No. 406 to (A3) Purple No. 401 is 1:5 to 1:1, and when the combination (II) is included, the mass ratio ((A2):(B9)) of (A2) Red No. 104(1) to (B9) Green No. 201 is 8:3 to 9:1, and when the combination (III) is included, the mass ratio ((B4):(B8)) of (B4) Orange No. 205 to (B8) Black No. 401 is 1:2 to 9:1, and when the total amount of the acid dyes is taken as 100% by mass, the proportion of the acid dye A is 60% by mass or more.

[0011] [2] The acidic hair dye composition according to [1], wherein the acidic dyes include a combination (I) of (A1) Yellow No. 406 and (A3) Purple No. 401 and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401, and when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more.

[0012] [3] The acidic hair dye composition according to [1], wherein the acidic dyes include a combination (II) of (A2) Red 104 (1) and (B9) Green 201 and a combination (III) of (B4) Orange 205 and (B8) Black 401, and when the total mass of (A2) Red 104 (1) and (B9) Green 201 ((A2) + (B9)) is 100 parts by mass, the total mass of (B4) Orange 205 and (B8) Black 401 ((B4) + (B8)) is 10 parts by mass or more.

[0013] [4] The acidic hair dye composition according to [1], wherein the acidic dyes include a combination (I) of (A1) Yellow No. 406 and (A3) Purple No. 401, a combination (II) of (A2) Red No. 104 (1) and (B9) Green No. 201, and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401.

[0014] [5] The acidic hair dye composition according to [1], wherein the acidic dyes include a combination (I) of (A1) Yellow No. 406 and (A3) Purple No. 401, a combination (II) of (A2) Red No. 104 (1) and (B9) Green No. 201, and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401, and when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more.

[0015] [6] The acidic hair dye composition according to [1], wherein the acidic dyes include a combination (I) of (A1) Yellow No. 406 and (A3) Purple No. 401, a combination (II) of (A2) Red No. 104(1) and (B9) Green No. 201, and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401, and when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more.

[0016] [7] The acidic hair dye composition according to any one of [1] to [6], wherein the acidic dye comprises the acidic dye A and the acidic dye B, and the acidic dye B is at least one selected from the group consisting of (B1) Yellow No. 203, (B2) Yellow No. 403(1), (B3) Yellow No. 407, (B4) Orange No. 205, (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230(1), (B8) Black No. 401, and (B9) Green No. 201.

[0017] [8] The acidic hair dye composition according to any one of [1] to [7], which is used for dyeing gray hair. Effect of the Invention

[0018] According to the present invention, it is possible to provide an acidic hair dye composition which blends well with gray hair and has high fastness to permanent wave treatment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Next, the acidic hair dye composition of the present invention will be specifically described. <Acidic hair dye composition> The acid hair dye composition of the present invention contains an acid dye including at least one acid dye A selected from the group consisting of (A1) Yellow No. 406, (A2) Red No. 104(1) and (A3) Purple No. 401, and the acid dye includes at least one combination selected from the group consisting of a combination (I) of (A1) Yellow No. 406 and (A3) Purple No. 401, a combination (II) of (A2) Red No. 104(1) and (B9) Green No. 201, and a combination (III) of (B4) Orange No. 205 and (B8) Black No. 401. When the acid hair dye composition contains the combination (I), the acid hair dye composition of the present invention includes at least one combination selected from the group consisting of a combination (I) of (A1) Yellow No. 406 and (A 3) The mass ratio of (A1):(A3) to Purple No. 401 is 1:5 to 1:1, and when the combination (II) is included, the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) is 8:3 to 9:1, and when the combination (III) is included, the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is 1:2 to 9:1, and when the total amount of the acid dyes is taken as 100% by mass, the proportion of Acid Dye A is 60% by mass or more, preferably 63% by mass or more and 98% by mass or less, and more preferably 63% by mass or more and 83% by mass or less.

[0020] If the proportion of acid dye A is less than 60% by mass, the coloring in the thioglycolic acid permanent wave first agent solution tends to be dark, and the fastness in the permanent wave treatment using the thioglycolic acid permanent wave first agent solution may also be reduced, which is undesirable. In addition, if the coloring in the thioglycolic acid permanent wave first agent solution tends to be dark, it may give the practitioner the impression that the hair has faded, which is also undesirable.

[0021] In the present invention, acid dye A refers to an acid dye in the group consisting of (A1) Yellow No. 406, (A2) Red No. 104 (1) and (A3) Purple No. 401. In the present invention, Acid Dye B refers to an Acid Dye of the group consisting of (B1) Yellow No. 203, (B2) Yellow No. 403(1), (B3) Yellow No. 407, (B4) Orange No. 205, (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230(1), (B8) Black No. 401, and (B9) Green No. 201.

[0022] In the acid dyes of the present invention, the combination of (A1) Yellow No. 406 and (A3) Purple No. 401 is referred to as Combination (I), the combination of (A2) Red No. 104(1) and (B9) Green No. 201 is referred to as Combination (II), and the combination of (B4) Orange No. 205 and (B8) Black No. 401 is referred to as Combination (III).

[0023] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes combination (I), the mass ratio of (A1) Yellow No. 406 to (A3) Purple No. 401 ((A1):(A3)) is 1:5 to 1:1, which tends to blend well with gray hair, dye gray hair more strongly, and may cause less coloring in a thioglycolic acid solution, and therefore preferably ((A1):(A3)) is 2:3 to 1:2.

[0024] If the ratio ((A1):(A3)) is less than 1:5, that is, if the content ratio of (A3) is high, the purple color will become stronger and the saturation will become too high, which may result in an unnatural finish and poor compatibility with gray hair, and this is not preferred.

[0025] If the ratio ((A1):(A3)) is greater than 1:1, that is, if the content ratio of (A1) is high, the yellow color becomes stronger and the saturation becomes too high, which is undesirable as it may result in an unnatural finish and poor compatibility with gray hair.

[0026] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes a combination (II), the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) is 8:3 to 9:1, which tends to blend well with gray hair and dye gray hair more strongly, and therefore, preferably, ((A2):(B9)) is 3:1 to 6:1.

[0027] If the ratio of ((A2):(B9)) is less than 8:3, that is, if the content ratio of (B9) is high, the green color becomes stronger and the saturation becomes too high, which may result in an unnatural finish and poor compatibility with gray hair, and is therefore undesirable.

[0028] If the ratio ((A2):(B9)) is greater than 9:1, that is, if the content ratio of (A2) is high, the red color will become stronger and the saturation will increase too much, resulting in an unnatural finish and poor compatibility with gray hair, which is undesirable.

[0029] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes a combination (III), the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is 1:2 to 9:1, which is particularly excellent in compatibility with gray hair and tends to dye gray hair more strongly, and therefore, preferably ((B4):(B8)) is 2:3 to 5:1.

[0030] If the ratio ((B4):(B8)) is less than 1:2, that is, if the content ratio of (B8) is high, the blue color will become stronger and the saturation will increase too much, resulting in an unnatural finish and poor compatibility with gray hair, which is undesirable.

[0031] If the ratio ((B4):(B8)) is greater than 9:1, that is, if the content ratio of (B4) is high, the orange color becomes stronger and the saturation increases too much, which may result in an unnatural finish and poor compatibility with gray hair, and is therefore undesirable.

[0032] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes combination (I) and combination (III), the mass ratio of (A1) Yellow No. 406 to (A3) Purple No. 401 ((A1):(A3)) is preferably 2:3 to 1:2, and the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is preferably 2:3 to 5:1.

[0033] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes combination (II) and combination (III), the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) is preferably 3:1 to 6:1, and the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is preferably 2:3 to 5:1.

[0034] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A. When the acid dye includes combination (I) and combination (II), the mass ratio of (A1) Yellow No. 406 to (A3) Purple No. 401 ((A1):(A3)) is preferably 2:3 to 1:2, and the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) is preferably 3:1 to 6:1.

[0035] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combination (I), combination (II), and combination (III), the mass ratio of (A1) Yellow No. 406 to (A3) Purple No. 401 ((A1):(A3)) is preferably 2:3 to 1:2, the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) is preferably 3:1 to 6:1, and the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is preferably 2:3 to 5:1.

[0036] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combination (I) and combination (III), when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is preferably 10 parts by mass or more, and because this tends to blend well with gray hair and dye gray hair more strongly, it is more preferably 20 parts by mass or more and 500 parts by mass or less, and even more preferably 20 parts by mass or more and 65 parts by mass or less.

[0037] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combination (II) and combination (III), when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is preferably 10 parts by mass or more, and since this tends to blend well with gray hair, it is more preferably 20 parts by mass or more and 500 parts by mass or less, and even more preferably 20 parts by mass or more and 220 parts by mass or less.

[0038] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combination (I), combination (II), and combination (III), when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is preferably 10 parts by mass or more, more preferably 20 parts by mass or more and 500 parts by mass or less.

[0039] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combination (I), combination (II), and combination (III), when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is preferably 10 parts by mass or more, more preferably 20 parts by mass or more and 500 parts by mass or less.

[0040] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and when the acid dye includes combinations (I), (II), and (III), when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is , preferably 10 parts by mass or more, more preferably 20 parts by mass or more and 500 parts by mass or less, and when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is taken as 100 parts by mass, the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is preferably 10 parts by mass or more, more preferably 20 parts by mass or more and 500 parts by mass or less.

[0041] The acidic hair dye composition of the present invention contains at least one acid dye including an acid dye A, and the acid dye preferably includes combination (I) and combination (III), and further includes at least one selected from the group consisting of (A2) Red No. 104 (1), (B1) Yellow No. 203, (B2) Yellow No. 403 (1), (B3) Yellow No. 407, (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230 (1), and (B9) Green No. 201.

[0042] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, and more preferably, the acid dye includes combination (I) and combination (III) and further includes (A2) Red No. 104 (1). By including the acid dye includes combination (I) and combination (III) and further includes (A2) Red No. 104 (1), the hair dye composition is less likely to stain the thioglycolic acid solution and is less likely to give the impression to the hair that it has faded, which is preferable.

[0043] The acid hair dye composition of the present invention contains an acid dye including at least one type of Acid Dye A, and the acid dye includes the Acid Dye A and Acid Dye B, and it is preferable that the Acid Dye B is at least one type selected from the group consisting of (B1) Yellow No. 203, (B2) Yellow No. 403(1), (B3) Yellow No. 407, (B4) Orange No. 205, (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230(1), (B8) Black No. 401, and (B9) Green No. 201.

[0044] It is more preferable that the acid dye B is at least one selected from the group consisting of (B4) Orange No. 205, (B8) Black No. 401, and (B9) Green No. 201. From the viewpoint of reducing coloration of the thioglycolic acid permanent wave first agent solution, it is more preferable that the acid dye B is at least one selected from the group consisting of (B1) Yellow No. 203, (B3) Yellow No. 407, and (B4) Orange No. 205, and it is even more preferable that the acid dye B is (B4) Orange No. 205.

[0045] From the viewpoint of high fastness in permanent wave treatment using a thioglycolic acid permanent wave first agent solution, it is preferable that the acid dye B is at least one selected from the group consisting of (B2) Yellow No. 403(1), (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230(1), (B8) Black No. 401, and (B9) Green No. 201, and it is even more preferable that the acid dye B is at least one selected from the group consisting of (B8) Black No. 401 and (B9) Green No. 201.

[0046] The acid hair dye composition of the present invention contains at least one acid dye including an acid dye A, the acid dye including the acid dye A and an acid dye B, and the acid dye B is preferably at least one selected from the group consisting of (B1) Yellow No. 203, (B2) Yellow No. 403 (1), (B3) Yellow No. 407, (B4) Orange No. 205, (B5) Red No. 106, (B6) Red No. 227, (B7) Red No. 230 (1), (B8) Black No. 401, and (B9) Green No. 201. When the total amount of the acid dyes is taken as 100% by mass, the proportion of the acid dye A is 60% by mass or more, and the proportion of the acid dye B is preferably 2% by mass or more and 40% by mass or less.

[0047] [Acid dye] In the present invention, the acid dye refers to an acid dye in the tar dyes described in the Ministerial Ordinance (Ministry of Health and Welfare Ordinance No. 30 of 1966) that specifies tar dyes that can be used in medicines, etc. The acid dye can be applied to hair together with a penetrating agent or the like to dye the hair.

[0048] The acidic hair dye composition of the present invention may contain an acidic dye other than Acid Dye A and Acid Dye B, an HC dye, and a basic dye, as long as the effects of the present invention are not impaired. Examples of acidic dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 105 (1), Red No. 201, Red No. 213, Red No. 230 (2), Red No. 231, Red No. 232, Red No. 401, Red No. 502, Red No. 503, Red No. 504, Red No. 506, Orange No. 207, Orange No. 402, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 402, Blue No. 1, Blue No. 2, Examples of the HC dyes include Blue No. 202, Blue No. 203, Blue No. 205, Green No. 205, Green No. 401, Green No. 402, and Brown No. 201. Examples of the HC dyes include HC Blue 2, HC Blue 6, HC Blue 7, HC Blue 8, HC Orange 1, HC Orange 2, HC Orange 3, HC Red 1, HC Red 3, HC Red 7, HC Red 10, HC Red 13, HC Red 14, HC Purple 1, HC Purple 2, HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, 1-amino-2-methyl Examples of the basic dyes include red No. 213, red No. 214, basic blue 7, basic blue 9, basic blue 26, basic blue 75, basic blue 99, basic red 2, basic red 22, basic red 51, basic red 76, basic yellow 57, basic yellow 87, basic orange 31, basic brown 16, basic brown 17, basic purple 3, basic purple 4, and basic purple 14. Among these, acid dyes and HC dyes are preferred because they are dyed with acid.

[0049] [Natural colorants and other ingredients] The acidic hair dye composition of the present invention may contain a natural colorant, if necessary, within a range that does not impair the effects of the present invention. As the natural colorant, those that have been used for food and cosmetics for a long time are preferable from the viewpoint of safety and color tone, and for example, natural colorants described in the Cosmetic Raw Material Standards, Cosmetic Type Approval Standards I to V, Quasi-drug Raw Material Standards, and Food Additives Official Standards can be used.

[0050] Specific examples of natural pigments that are preferred include gardenia pigment, turmeric pigment, annatto pigment, copper chlorophyll, paprika pigment, and lac pigment. The natural dyes may be used alone or in combination of two or more kinds, and an acid dye may be used in combination with one or more natural dyes.

[0051] The acidic hair dye composition of the present invention may contain other components as necessary within the scope of not impairing the effects of the present invention. Examples of other components include oily components (hydrocarbons, oils and fats, waxes, higher alcohols, higher fatty acids, esters), thickeners, penetrating agents, moisturizing agents, surfactants (anionic surfactants, cationic surfactants, nonionic surfactants, amphoteric surfactants), silicones, chelating agents, antioxidants, stabilizers, pH adjusters, protective agents, solvents, anti-inflammatory agents, fragrances, preservatives, UV absorbers, propellants, plant extracts, herbal extracts, vitamins, and resins.

[0052] As other components, specifically, benzyl alcohol as a penetrant, ethanol and water as a solvent, and the above-mentioned acidic components, preferably lactic acid (e.g., 90% lactic acid) and sodium lactate as a pH adjuster, can be used. In addition, it is preferable to use ion-exchanged water as water. The other components can be used alone or in combination of two or more.

[0053] <Production of acidic hair dye composition> The acidic hair dye composition of the present invention can be produced by, for example, stirring, mixing, heating, dissolving, dispersing, or the like in a known manner, except that each of the above-mentioned components is used in the amounts described above, and the production method is not particularly limited.

[0054] [pH] The pH of the acidic hair dye composition of the present invention is preferably 2.0 to 5.0, more preferably 2.0 to 3.5.

[0055] [Dosage form] The formulation of the acidic hair dye composition of the present invention is not particularly limited, but may be, for example, a milk, cream, gel, lotion, liquid, or foam. Of these, the cream or gel formulation is preferred. The acidic hair dye composition of the present invention can also be used as a spray composition by using it together with a propellant.

[0056] [Application] The acidic hair dye composition of the present invention can be applied or sprayed onto hair. When applying to hair, an appropriate amount can be applied with a comb or brush. After application to hair, it is preferable to heat the hair at 20 to 50°C, preferably 45°C, for 1 to 20 minutes, if necessary.

[0057] The acidic hair dye composition of the present invention is preferably used for dyeing gray hair. The acidic hair dye composition of the present invention can be applied to the entire hair, and can also be used for dyeing a specific part of the hair, for example, a gray hair part.

[0058] The acidic hair dye composition of the present invention is preferably used for dyeing all or part of gray hair. Generally, when a portion of hair is gray, specifically when the proportion of gray hair in the total hair is 30% to 50%, even if dyeing treatment is performed, black hair and gray hair will not be dyed the same color, so the gray hair may appear to be undyed, and a phenomenon known as gray hair floating may occur.

[0059] The acidic hair dye composition of the present invention does not cause gray hair to stand out and blends well with gray hair, so it is preferably used on hair in which the proportion of gray hair in the total hair is 30% to 50%. The acidic hair dye composition of the present invention can be applied or sprayed onto hair to perform a dyeing treatment, and then the dyed hair can be subjected to a permanent wave treatment.

[0060] When hair dyed with the acidic hair dye composition of the present invention is subjected to a permanent wave treatment, the permanent wave treatment is preferably a permanent wave treatment using thioglycolic acid or cysteamine. EXAMPLES

[0061] The present invention will now be described in more detail with reference to examples, but the present invention is not limited to these.

[0062] [Examples 1 to 42, Comparative Examples 1 to 34] In the examples and comparative examples, the commercially available products shown in Table 1 were used.

[0063] [Table 1]

[0064] The numerical values ​​of the formulations in Tables 2 to 11 represent the mass % of each component when the acidic hair dye composition is taken as 100 mass %, and are expressed as values ​​converted into pure contents.

[0065] [Hair dye test] The components were mixed according to the formulation shown in Table 2 to prepare a base for an acidic hair dye composition.

[0066] [Table 2]

[0067] Acidic dyes having formulations shown in Tables 6 to 11 were mixed with this base to produce acidic hair dye compositions, which were used as samples.

[0068] [Hair bundle] (Hair bundle 1) 10cm human hair 30% mix hair bundle (BM-MIX-A made by Bealux) 1g (Hair bundle 2) 10cm human hair 50% mix hair bundle (BM-MIX-K50-A, manufactured by Bealux) 1g (Hair bundle 3) 10cm human gray hair bundle (BM-WA, manufactured by Beaulax) 1g Each sample was applied to the above three types of hair bundles and a hair dyeing test was performed.

[0069] [Hair dye test] 2 g of the sample was applied to one dry hair bundle with a brush. It was then left at 45°C for 15 minutes and dyed (dyeing treatment). The dyed hair bundle was washed with a 10% aqueous solution of Alscope DA-330S (Toho Chemical Industry Co., Ltd.) and then dried. After drying, hair bundle 1 was evaluated for compatibility with gray hair under evaluation item 1, and hair bundle 2 was evaluated for evaluation item 2. Hair bundle 3 was evaluated for dyeing of gray hair under evaluation item 3. After the above evaluation, the hair bundle 3 used in evaluation item 3 was used to carry out a fastness test by treating it with three types of permanent wave No. 1 solution.

[0070] [Robustness test] The formula for the thioglycolic acid permanent wave first agent solution is shown in Table 3, the formula for the cysteamine permanent wave first agent solution is shown in Table 4, and the formula for the permanent wave second agent solution is shown in Table 5.

[0071] [Table 3]

[0072] [Table 4]

[0073] [Table 5]

[0074] One hair bundle from hair bundle 3 used in evaluation item 3 was immersed in 10 mL of thioglycolic acid permanent wave agent 1 solution or cysteamine permanent wave agent 1 solution. After immersion for 15 minutes at 25°C, the hair bundle was removed. After removing the hair bundle, the coloring in the thioglycolic acid permanent wave agent 1 solution or cysteamine permanent wave agent 1 solution was visually evaluated.

[0075] Before the hair bundle was immersed in the thioglycolic acid permanent wave No. 1 solution and the cysteamine permanent wave No. 1 solution, both were colorless and transparent. The hair bundle taken out after immersion was washed with tap water for 30 seconds, towel-dried, and then immersed in 10 ml of permanent wave agent 2 solution. After immersion for 15 minutes at 25°C, the hair bundle was taken out, washed with a 10% aqueous solution of Alscope DA-330S (Toho Chemical Industry Co., Ltd.), and dried with a dryer (permanent wave treatment). This permanent wave treated hair bundle was visually compared with the hair bundle 3 used in evaluation item 3 that had not been permanent wave treated, and fastness was evaluated in evaluation items 5 and 7.

[0076] In addition, coloring of the hair after permanent wave treatment with thioglycolic acid permanent wave first agent solution or cysteamine permanent wave first agent solution was evaluated in evaluation items 4 and 6.

[0077] [Evaluation method] A sensory evaluation was performed by 10 expert panelists (hairdressers) one at a time according to the evaluation criteria described for each item (1) to (7).

[0078] The average of the 10 reviewers' ratings for each item was calculated and evaluated as follows: ◎: The average rating of 10 expert panelists (hairdressers) is between 3 and 4 points. ○: The average rating score of 10 professional panelists (hairdressers) is 2.5 points or more but less than 3 points. △: The average rating score of 10 professional panelists (hairdressers) is 2 or more and less than 2.5 points. ×: The average evaluation score of 10 professional panelists (hairdressers) is 1 point or more but less than 2 points.

[0079] [Evaluation items and evaluation criteria] (1) Gray hair blending with 30% gray hair (hair bundle 1) The dyed hair bundle was visually evaluated under sunlight for its compatibility with gray hair. 4 points: Blends well with gray hair 3 points: Fairly good at blending in with gray hair 2 points: Gray hair doesn't blend in well 1 point: Gray hair does not blend well and looks out of place

[0080] (2) Gray hair blending with 50% gray hair (hair bundle 2) The dyed hair bundle was visually evaluated under sunlight for its compatibility with gray hair. 4 points: Blends well with gray hair 3 points: Fairly good at blending in with gray hair 2 points: Gray hair doesn't blend in well 1 point: Gray hair does not blend well and looks out of place

[0081] (3) Dyeing of gray hair bundle (hair bundle 3) The dyed hair strands were visually evaluated for dyeing intensity under sunlight. 4 points: Strong dyeing of gray hair 3 points: Gray hair dyed somewhat strongly 2 points: Gray hair is not dyed very well 1 point: Gray hair is not dyed well

[0082] (4) Coloring of thioglycolic acid permanent wave 1st agent solution The color intensity of the thioglycolic acid permanent wave first agent solution after permanent wave treatment using the first agent solution was evaluated visually under sunlight. 4 points: Almost no coloring 3 points: slightly colored 2 points: Slightly darkly colored 1 point: Darkly colored

[0083] (5) Durability during permanent waving using thioglycolic acid permanent wave 1st agent solution Hair strands that had been permanently waved using thioglycolic acid were compared with hair strands that had not been permanently waved (unpermed hair strands) under sunlight and visually evaluated. 4 points: No discoloration or fading, high durability 3 points: Almost no discoloration or fading, and somewhat high durability 2 points: Slight discoloration and fading, and somewhat poor durability 1 point: Significant discoloration and fading, poor fastness

[0084] (6) Coloring of Cysteamine Permanent Wave Solution 1 The color intensity of the cysteamine permanent wave No. 1 solution after permanent wave treatment using the solution was evaluated visually under sunlight. 4 points: Almost no coloring 3 points: slightly colored 2 points: Slightly darkly colored 1 point: Darkly colored

[0085] (7) Durability during permanent wave treatment using cysteamine permanent wave 1st agent solution Hair tresses that had been permanently waved using cysteamine were compared with hair tresses that had not been permanently waved (unpermed hair tresses) under sunlight and visually evaluated. 4 points: No discoloration or fading, high durability 3 points: Almost no discoloration or fading, and somewhat high durability 2 points: Slight discoloration and fading, and somewhat poor durability 1 point: Significant discoloration and fading, poor fastness

[0086] [Table 6]

[0087] [Table 7]

[0088] [Table 8]

[0089] [Table 9]

[0090] [Table 10]

[0091] [Table 11]

[0092] All of the dyeing methods of Examples 1 to 42 gave good results. It can be seen that the acidic hair dye composition of the present invention is an acidic hair dye composition that blends well with gray hair and has high fastness to permanent wave treatment.

[0093] The acidic hair dye compositions of Comparative Examples 1 to 24 did not contain at least one combination selected from the group consisting of combination (I), combination (II), and combination (III), and therefore tended to be poorly compatible with gray hair.

[0094] Comparative Examples 25 and 26 contained combination (I), but the mass ratio ((A1):(A3)) of (A1) Yellow No. 406 to (A3) Purple No. 401 was not within the range of 1:5 to 1:1, and therefore tended to be poorly compatible with gray hair.

[0095] Comparative Examples 27 and 28 contained combination (II), but the mass ratio of (A2) Red No. 104(1) to (B9) Green No. 201 ((A2):(B9)) was not within the range of 8:3 to 9:1, and therefore tended to be poorly compatible with gray hair.

[0096] Comparative Examples 29 and 30 contained combination (III), but the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) was not within the range of 1:2 to 9:1, and therefore tended to be poorly compatible with gray hair.

[0097] In the acidic hair dye compositions of Comparative Examples 31 to 33, when the total amount of the acidic dyes was taken as 100% by mass, the proportion of the acidic dye A was not 60% by mass or more, and therefore the fastness tended to be low in permanent wave treatment using a thioglycolic acid permanent wave first agent solution.

[0098] In the acidic hair dye composition of Comparative Example 34, when the total amount of acidic dyes was taken as 100% by mass, the proportion of the acidic dye A was not 60% by mass or more, so the coloring in the thioglycolic acid permanent wave first agent solution tended to be darker.

Claims

1. (A1) Yellow No. 406, (A2) Red No. 104 (1), and (A3) Purple No. 401; The acid dye is (A2) Combination of Red No. 104 (1) and (B9) Green No. 201 (II) Including, In the combination (II), the mass ratio of (A2) Red No. 104 (1) to (B9) Green No. 201 ((A2):(B9)) is 8:3 to 9:1; The acidic hair dye composition, wherein the proportion of the acidic dye A is 60% by mass or more when the total amount of the acidic dyes is 100% by mass.

2. The acid dye, (A2) Red No. 104 (1) and (B9) Green No. 201 (II) (B4) Orange No. 205 and (B8) Black No. 401 (III), 2. The acidic hair dye composition according to claim 1, wherein in the combination (III), the mass ratio of (B4) Orange No. 205 to (B8) Black No. 401 ((B4):(B8)) is 1:2 to 9:

1.

3. The acid dye is (A2) Red No. 104 (1) and (B9) Green No. 201 (II) (B4) Orange No. 205 and (B8) Black No. 401 (III), 3. The acidic hair dye composition according to claim 2, wherein the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is 100 parts by mass.

4. The acid dye is (A1) Yellow No. 406 and (A3) Purple No. 401 (I) (A2) Red No. 104 (1) and (B9) Green No. 201 (II) (B4) Orange No. 205 and (B8) Black No. 401 (III), In the combination (I), the mass ratio ((A1):(A3)) of (A1) Yellow No. 406 and (A3) Purple No. 401 is 1:5 to 1:

1. The acidic hair dye composition according to claim 2.

5. The acid dye is (A1) Yellow No. 406 and (A3) Purple No. 401 (I) (A2) Red No. 104 (1) and (B9) Green No. 201 (II) (B4) Orange No. 205 and (B8) Black No. 401 (III), 5. The acidic hair dye composition according to claim 4, wherein the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more when the total mass of (A1) Yellow No. 406 and (A3) Purple No. 401 ((A1)+(A3)) is 100 parts by mass.

6. The acid dye is (A1) Yellow No. 406 and (A3) Purple No. 401 (I) (A2) Red No. 104 (1) and (B9) Green No. 201 (II) (B4) Orange No. 205 and (B8) Black No. 401 (III), 5. The acidic hair dye composition according to claim 4, wherein the total mass of (B4) Orange No. 205 and (B8) Black No. 401 ((B4)+(B8)) is 10 parts by mass or more when the total mass of (A2) Red No. 104(1) and (B9) Green No. 201 ((A2)+(B9)) is 100 parts by mass.

7. The acidic hair dye composition according to any one of claims 1 to 6, which is used for dyeing gray hair.

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