Hair dye composition

Abstract

To provide a hair dye composition that can suppress changes in hue and tone before and after fading, irrespective of the level of hair damage.SOLUTION: A hair dye composition contains basic red 51 (component A) and basic violet 2 (component B). The mass ratio of the content of the component A to the total content of the components A and B is 0.35 or more and 0.90 or less.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair dye composition used for dyeing hair. [Background technology]

[0002] Hair dye compositions containing direct dyes are known as hair dye compositions that cause less damage to hair and scalp. In hair dye compositions containing direct dyes, it is difficult to achieve a desired color with a single direct dye, so two or more direct dyes are usually used.

[0003] Among direct dyes, basic dyes are convenient because they can dye hair without an oxidation reaction and have excellent dyeing properties. Patent Document 1 below discloses a hair dye composition containing a basic dye, which contains, as component (A), a triaminotriphenylmethane compound having a specific structure, and, as component (B), component (b1) which is at least one selected from Basic Blue 75, Basic Blue 124, and HC Blue 15, or component (b2) which is one selected from Basic Blue 99 and HC Blue 16. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-121956 Summary of the Invention [Problem to be solved by the invention]

[0005] Damaged areas of hair generally have a greater negative charge than undamaged areas. When dyeing hair with a basic dye, the basic dye, which has a positive charge, is more likely to bond to damaged areas of hair, which have a greater negative charge.

[0006] Hair dyed with a basic dye is prone to fading when washed repeatedly. Therefore, when multiple basic dyes are used, if the fading properties of the basic dyes differ significantly, the hue or tone of the hair will change significantly between immediately after dyeing and after repeated washing, i.e., before and after fading.

[0007] Furthermore, the dyeability of basic dyes and the persistence of basic dyes on hair vary depending on the level of hair damage. Hair with a higher level of damage has a greater negative charge, and therefore the higher the level of damage, the more likely the hue or tone of the hair changes before and after fading. In addition, when there are areas of hair with different levels of damage, the degree of fading of hue and tone differs between areas with a low level of damage and areas with a high level of damage, and the difference in hue or tone after fading between these areas also becomes greater.

[0008] Although the hair dye composition described in Patent Document 1 can reduce the change in hue and tone before and after fading to some extent, the effect is not sufficient.

[0009] An object of the present invention is to provide a hair dye composition that can reduce changes in hue and tone before and after fading, regardless of the level of damage to the hair. [Means for solving the problem]

[0010] The present invention provides a hair dye composition comprising the following component (A) and component (B), wherein the mass ratio of the content of component (A) to the total content of component (A) and component (B) is 0.35 or more and 0.90 or less:

[0011] Component (A): Basic Red 51 Component (B): Basic Purple 2

[0012] The hair dye composition of the present invention preferably contains the following component (C) and / or the following component (D).

[0013] Component (C): Basic Blue 124 Component (D): HC Blue 15 and / or Basic Blue 75

[0014] The hair dye composition of the present invention preferably contains the component (C) and the component (D).

[0015] In the hair dye composition of the present invention, the mass ratio of the content of the component (C) to the total content of the component (C) and the component (D) is preferably 0.55 or more and 0.85 or less.

[0016] In the hair dye composition of the present invention, the mass ratio of the content of the component (A) to the total content of the component (A) and the component (B) is preferably 0.40 or more.

[0017] The hair dye composition of the present invention preferably contains the component (C) and either does not contain or contains the component (D), the mass ratio of the content of the component (C) to the total content of the components (C) and (D) being greater than 0.85 and not more than 1.00, and the mass ratio of the content of the component (A) to the total content of the components (A) and (B) being not less than 0.60.

[0018] It is preferable that the hair dye composition of the present invention does not contain or contains component (C) and contains component (D), and that the mass ratio of the content of component (C) to the total content of components (C) and (D) is 0 or more and less than 0.55, and the mass ratio of the content of component (A) to the total content of components (A) and (B) is 0.60 or less.

[0019] In the hair dye composition of the present invention, it is preferable that the mass ratio of the total content of the component (A) and the component (B) to the total content of the component (C) and the component (D) is 0.30 or more and 3.00 or less.

[0020] The hair dye composition of the present invention preferably contains the following component (E).

[0021] Ingredient (E): Basic Brown 16 and / or Basic Yellow 87

[0022] The hair dye composition of the present invention contains the following component (C) and / or the following component (D), and it is preferable that the mass ratio of the content of component (E) to the total content of component (A), component (B), component (C), component (D), and component (E) is 0.15 or more and 0.75 or less.

[0023] Component (C): Basic Blue 124 Component (D): HC Blue 15 and / or Basic Blue 75

[0024] The present invention provides a hair dye composition comprising the following components (A), (C), and (D), and containing or not containing the following component (B), wherein the mass ratio of the content of component (A) to the total content of component (A) and component (B) is 0.35 or more:

[0025] Component (A): Basic Red 51 Component (B): Basic Purple 2 Component (C): Basic Blue 124 Component (D): HC Blue 15 and / or Basic Blue 75 [Effects of the Invention]

[0026] The hair dye composition of the present invention can reduce changes in hue and tone before and after fading, regardless of the level of damage to the hair. DETAILED DESCRIPTION OF THE INVENTION

[0027] The present invention will be described in detail below.

[0028] The hair dye composition of the present invention contains Basic Red 51 and Basic Purple 2.

[0029] In this specification, the above-mentioned "Basic Red 51" may be referred to as "component (A)."

[0030] In this specification, the above-mentioned "Basic Purple 2" may be referred to as "Component (B)."

[0031] Therefore, the hair dye composition of the present invention contains component (A) and component (B).

[0032] In the hair dye composition of the present invention, the mass ratio of the content of component (A) to the total content of components (A) and (B) (content of component (A) / total content of components (A) and (B)) is 0.35 or more and 0.90 or less.

[0033] The hair dye composition of the present invention has the above-mentioned constitution, and therefore can reduce changes in hue and tone before and after fading, regardless of the level of damage to the hair.

[0034] Component (A) is a red dye that is less likely to remain in highly damaged hair (it is more likely to remain in less damaged hair than in more damaged hair). On the other hand, component (B) is a red dye that is more likely to remain in highly damaged hair (it is more likely to remain in more damaged hair than in less damaged hair). The present inventors have discovered that by combining component (A) and component (B) in a specific mass ratio, it is possible to reduce changes in hue and tone before and after fading, regardless of the level of hair damage. The hair dye composition of the present invention can reduce changes in hue and tone of hair, for example, immediately after hair dyeing and after repeated hair washing.

[0035] Furthermore, in conventional hair dye compositions, changes in hue and tone before and after fading are particularly likely to occur in low-saturation color tones. However, in the hair dye composition of the present invention, component (A) and component (B) are used in combination at a specific mass ratio, so that even in low-saturation color tones, changes in hue and tone before and after fading can be minimized, and the effects of the present invention are exerted even more effectively.

[0036] In addition, the damage level of hair may be uneven depending on the region of the hair. For example, the damage level may be uneven from the root to the tip, or the damage level may be higher in only certain regions of the hair. In such cases, if the degree of change in hue or color tone before and after fading differs depending on the damage level of the hair, unevenness in hue or color tone between regions of the hair after fading is likely to occur. The hair dye composition of the present invention can reduce the change in hue and color tone before and after fading regardless of the damage level of the hair. Therefore, even if there are regions of the hair with different damage levels, unevenness in hue and color tone between regions of the hair after fading can be reduced.

[0037] The hair dye composition of the present invention may contain Basic Blue 124, or may contain HC Blue 15 and / or Basic Blue 75, or may contain Basic Blue 124, HC Blue 15 and / or Basic Blue 75.

[0038] In this specification, the above-mentioned "Basic Blue 124" may be referred to as "component (C)."

[0039] In this specification, the above-mentioned "HC Blue 15 and / or Basic Blue 75" may be referred to as "component (D)."

[0040] Therefore, the hair dye composition of the present invention may contain component (C) and / or component (D).

[0041] The hair dye composition of the present invention may contain Basic Brown 16 and / or Basic Yellow 87.

[0042] In this specification, the above-mentioned "Basic Brown 16 and / or Basic Yellow 87" may be referred to as "component (E)."

[0043] By combining the hair dye composition of the present invention with component (E), it becomes easier to obtain a hair dye composition for dyeing tones with low chroma.

[0044] The hair dye composition of the present invention may contain components other than the components (A) to (E).

[0045] In this specification, the content of each component means the total content of all of the components contained in the hair dye composition. For example, the content of component (D) means the total content of all components (D) in the hair dye composition.

[0046] In this specification, the term "total content" refers to the sum of the contents of each component, but when at least one of the components is optional, even if the content of that optional component is 0% by mass, the total content refers to the sum of the contents of each component. For example, the total content of components (C) and (D) includes the sum of the content of component (C) (0% by mass) and the content of component (D) when the content of component (C) is 0% by mass.

[0047] Each component used in the hair dye composition of the present invention will be described in detail below.

[0048] (Component (A) and Component (B)) Component (A) is Basic Red 51. Component (A) is a red dye that is less likely to remain in highly damaged hair areas. Component (A) is a red dye that is more likely to remain in less damaged hair areas than in highly damaged hair areas.

[0049] Component (B) is Basic Purple 2. Component (B) is a red-based dye that is more likely to remain in highly damaged hair sections. Component (B) is a red-based dye that is more likely to remain in highly damaged hair sections than in less damaged hair sections.

[0050] In order to achieve the effects of the present invention, in the hair dye composition of the present invention, the mass ratio of the content of component (A) to the total content of component (A) and component (B) (content of component (A) / total content of component (A) and component (B)) is 0.35 or more and 0.90 or less.

[0051] The mass ratio of the content of component (A) to the total content of components (A) and (B) (content of component (A) / total content of components (A) and (B)) is preferably 0.40 or more. When this mass ratio (content of component (A) / total content of components (A) and (B)) is equal to or greater than the lower limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0052] In 100% by mass of the hair dye composition of the present invention, the total content of component (A) and component (B) is preferably 0.001% by mass or more, more preferably 0.003% by mass or more, and preferably 0.3% by mass or less, more preferably 0.1% by mass or less. When the total content is equal to or greater than the above lower limit and equal to or less than the above upper limit, hair can be dyed well. Furthermore, when the total content is equal to or greater than the above lower limit and equal to or less than the above upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0053] In the hair dye composition of the present invention, the total content of component (A) and component (B) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, preferably 100% by mass or less, more preferably 80.0% by mass or less, and even more preferably 60.0% by mass or less, based on 100% by mass of the basic dye. When the total content is equal to or greater than the lower limit and equal to or less than the upper limit, hair can be dyed well. Furthermore, when the total content is equal to or greater than the lower limit and equal to or less than the upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0054] (Component (C) and Component (D)) Component (C) is Basic Blue 124. Component (C) is a blue-based dye that is less likely to remain in highly damaged hair areas. Component (C) is a blue-based dye that is more likely to remain in less damaged hair areas than in highly damaged hair areas. The use of component (C) increases the variety of hues and tones that can be imparted to hair. Furthermore, compared to when a red-based dye is contained alone, when a red-based dye and a blue-based dye are used in combination, hue changes due to fading are more likely to occur. However, in the hair dye composition of the present invention, even when component (C) is contained, components (A) and (B) are used in combination at a specific mass ratio, which can suppress hue changes due to fading, thereby more effectively demonstrating the effects of the present invention. Therefore, it is preferable that the hair dye composition of the present invention contains component (C).

[0055] Component (D) is HC Blue 15 and / or Basic Blue 75. Component (D) is a blue-based dye that is more likely to remain in highly damaged hair than in less damaged hair. The use of component (D) increases the variety of hues and tones that can be imparted to hair. Compared to when a red-based dye is used alone, a combination of a red-based dye and a blue-based dye is more likely to cause a change in hue due to fading. However, even when component (D) is contained, the hair dye composition of the present invention uses a combination of components (A) and (B) in a specific mass ratio, which can suppress a change in hue due to fading, thereby enabling the effects of the present invention to be more effectively achieved. Therefore, it is preferable that the hair dye composition of the present invention contains component (D).

[0056] The hair dye composition of the present invention may contain, as component (D), HC Blue 15, Basic Blue 75, or both HC Blue 15 and Basic Blue 75. From the viewpoint of more effectively exerting the effects of the present invention, component (D) is preferably HC Blue 15. The hair dye composition of the present invention preferably contains HC Blue 15.

[0057] As mentioned above, component (C) is more likely to remain in less damaged hair than in more damaged hair, and component (D) is more likely to remain in more damaged hair than in less damaged hair. Therefore, by using component (C) and component (D) in combination, it is possible to reduce the change in hue and tone before and after fading, regardless of the level of hair damage, as in the case of using component (A) and component (B) in combination as a red dye. Therefore, it is preferable that the hair dye composition of the present invention contains component (C) and component (D).

[0058] In 100% by mass of the hair dye composition of the present invention, the total content of component (C) and component (D) is preferably 0.001% by mass or more, more preferably 0.003% by mass or more, and preferably 0.3% by mass or less, more preferably 0.1% by mass or less. When the total content is equal to or greater than the above lower limit and equal to or less than the above upper limit, hair can be dyed well. Furthermore, when the total content is equal to or greater than the above lower limit and equal to or less than the above upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0059] In the hair dye composition of the present invention, the total content of components (C) and (D) is preferably 5.0% by mass or more, more preferably 10.0% by mass or more, preferably 90.0% by mass or less, more preferably 80.0% by mass or less, and even more preferably 60.0% by mass or less, based on 100% by mass of the basic dye. When the total content is equal to or greater than the lower limit and equal to or less than the upper limit, hair can be dyed well. Furthermore, when the total content is equal to or greater than the lower limit and equal to or less than the upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0060] In the hair dye composition of the present invention, the mass ratio (content of component (A) / total content of component (A) and component (B)) is 0.35 or more and 0.90 or less. Note that the preferred range of the mass ratio (content of component (A) / total content of component (A) and component (B)) varies depending on the mass ratio (content of component (C) / total content of component (C) and component (D)). The preferred range of the mass ratio (content of component (A) / total content of component (A) and component (B)) will be further explained in the following three cases.

[0061] Case (1): The hair dye composition of the present invention contains component (C) and component (D), and the mass ratio of the content of component (C) to the total content of component (C) and component (D) (content of component (C) / total content of component (C) and component (D)) is 0.55 or more and 0.85 or less.

[0062] Case (2): The hair dye composition of the present invention contains component (C) and either does not contain component (D) or contains component (D), and the mass ratio of the content of component (C) to the total content of components (C) and (D) (content of component (C) / total content of components (C) and (D)) is greater than 0.85 and not greater than 1.00.

[0063] Case (3): The hair dye composition of the present invention does not contain or contains component (C), contains component (D), and the mass ratio of the content of component (C) to the total content of components (C) and (D) (content of component (C) / total content of components (C) and (D)) is 0 or more and less than 0.55.

[0064] In the above case (1), the mass ratio of the content of component (A) to the total content of component (A) and component (B) (content of component (A) / total content of component (A) and component (B)) is preferably 0.40 or more, more preferably 0.45 or more, and preferably 0.80 or less, more preferably 0.75 or less. When the mass ratio (content of component (A) / total content of component (A) and component (B)) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the change in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0065] In the above case (2), the mass ratio of the content of component (A) to the total content of component (A) and component (B) (content of component (A) / total content of component (A) and component (B)) is preferably 0.60 or more, more preferably 0.70 or more. When the mass ratio (content of component (A) / total content of component (A) and component (B)) is equal to or greater than the lower limit, the change in hue and tone before and after fading can be further reduced, regardless of the level of hair damage. Furthermore, the hair can be dyed more uniformly, regardless of the level of hair damage.

[0066] In the above case (3), the mass ratio of the content of component (A) to the total content of component (A) and component (B) (content of component (A) / total content of component (A) and component (B)) is preferably 0.40 or more, and preferably 0.60 or less. When this mass ratio (content of component (A) / total content of component (A) and component (B)) is equal to or more than the above lower limit and equal to or less than the above upper limit, the change in hue and color tone before and after fading can be further reduced, regardless of the level of hair damage. Furthermore, the hair can be dyed more uniformly, regardless of the level of hair damage.

[0067] In the above case (1), the mass ratio of the content of component (C) to the total content of component (C) and component (D) (content of component (C) / total content of component (C) and component (D)) is preferably 0.60 or more and preferably 0.80 or less. In this case, regardless of the level of hair damage, the change in hue and color tone before and after fading can be further reduced. Furthermore, regardless of the level of hair damage, hair can be dyed more uniformly.

[0068] In the hair dye composition of the present invention, the mass ratio of the total content of components (A) and (B) to the total content of components (C) and (D) (total content of components (A) and (B) / total content of components (C) and (D)) is preferably 0.30 or more, more preferably 0.60 or more, preferably 3.00 or less, more preferably 2.00 or less, and even more preferably 1.50 or less. When this mass ratio (total content of components (A) and (B) / total content of components (C) and (D)) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the effect of minimizing changes in hue and tone before and after fading is more significantly exhibited.

[0069] (Component (E)) Component (E) is Basic Brown 16 and / or Basic Yellow 87. Use of component (E) can increase the variety of hues and tones that can be imparted to hair. In particular, use of component (E) can dye hair in low-saturation tones (e.g., gray tones), thereby making it possible to more effectively achieve the effects of the present invention.

[0070] The hair dye composition of the present invention may contain, as component (E), Basic Brown 16, Basic Yellow 87, or both Basic Brown 16 and Basic Yellow 87. From the viewpoint of more effectively exerting the effects of the present invention, component (E) is preferably Basic Brown 16 and Basic Yellow 87. The hair dye composition of the present invention preferably contains Basic Brown 16 and Basic Yellow 87.

[0071] In the hair dye composition of the present invention, the mass ratio of the content of component (E) to the total content of components (A), (B), (C), (D), and (E) (the content of component (E) / the total content of components (A), (B), (C), (D), and (E)) is preferably 0.15 or more, more preferably 0.40 or more, and preferably 0.75 or less, more preferably 0.70 or less. When the mass ratio (the content of component (E) / the total content of components (A), (B), (C), (D), and (E)) is equal to or greater than the above lower limit and equal to or less than the above upper limit, the color tone becomes lower in saturation, and therefore the effect of minimizing changes in hue and color tone before and after fading is more significantly exhibited.

[0072] In 100% by mass of the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, and preferably 1.0% by mass or less, more preferably 0.5% by mass or less. When the total content is equal to or greater than the lower limit and equal to or less than the upper limit, hair can be dyed well. When the total content is equal to or less than the upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

[0073] In the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) is preferably 50.0% by mass or more, more preferably 80.0% by mass or more, based on 100% by mass of the basic dye. When the total content is equal to or greater than the lower limit, hair can be dyed well, and changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage. In addition, in the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) can be 100% by mass, 100% by mass or less, or less than 100% by mass.

[0074] The total content of components (A), (B), (C), (D), and (E) in the hair dye composition of the present invention (100% by mass) of the dye is preferably 5.0% by mass or more, more preferably 20.0% by mass or more, and even more preferably 50.0% by mass or more. When the total content is equal to or greater than the lower limit, hair can be dyed well, and changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage. The total content of components (A), (B), (C), (D), and (E) in the hair dye composition of the present invention (100% by mass) of the dye may be 100% by mass, 100% by mass or less, or less than 100% by mass.

[0075] (Other ingredients) The hair dye composition of the present invention may contain components other than the above-mentioned components (A) to (E). Examples of such other components include dyes other than the above-mentioned components (A) to (E), urea, amino-modified silicones, cationic polymers having an amino group, fatty acid amides, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, silicone oils other than amino-modified silicones, polyhydric alcohols, higher alcohols, lower alcohols, hydrocarbon oils, ester oils, cooling agents, pH adjusters, preservatives, antioxidants, sequestering agents, vitamins, animal extracts, plant extracts, pearlizing agents, colorants, and fragrances. Each of the above-mentioned other components may be used alone, or two or more may be used in combination.

[0076] <Dyes other than components (A) to (E)> The hair dye composition of the present invention may contain a dye other than components (A) to (E) (hereinafter, sometimes referred to as dye (X)). Dye (X) is a dye different from the five components, component (A), component (B), component (C), component (D), and component (E).

[0077] Examples of the dye (X) include Basic Blue 9, Basic Yellow 57, Basic Brown 17, Basic Purple 16, HC Blue 14, HC Blue 17, Basic Red 2, Basic Yellow 11, HC Blue 11, HC Blue 12, HC Red 1, HC Red 3, HC Red 7, HC Red 10, HC Red 11, HC Red 13, HC Yellow 12, HC Yellow 13, HC Orange 2, HC Violet BS, HC Purple 1, HC Purple 2, HC Red 15, HC Orange 3, Basic Orange 31, HC Yellow 7, HC Brown 1, Basic Red 118, Basic Blue 99, HC Blue 16, HC Blue 2, Basic Red 76, HC Yellow 2, and HC Yellow 4.

[0078] <Amino-modified silicone> The hair dye composition of the present invention may contain an amino-modified silicone. By using the amino-modified silicone, the effect of promoting penetration of the hair dye composition into hair can be enhanced.

[0079] Examples of the amino-modified silicone include an aminopropylmethylsiloxane-dimethylsiloxane copolymer, an aminoethylaminopropylsiloxane-dimethylsiloxane copolymer, and an aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer.

[0080] The amino group content of the amino-modified silicone is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and preferably 0.3% by mass or less, more preferably 0.2% by mass or less. When the amino group content is equal to or more than the above lower limit and equal to or less than the above upper limit, the effect of promoting penetration of the hair dye composition into hair can be further enhanced.

[0081] When the hair dye composition of the present invention contains the amino-modified silicone, the content of the amino-modified silicone in 100% by mass of the hair dye composition of the present invention is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and preferably 1.5% by mass or less, more preferably 1.0% by mass or less. When the content of the amino-modified silicone is equal to or more than the above lower limit and equal to or less than the above upper limit, the effect of promoting penetration of the hair dye composition into hair can be further enhanced, and dyeability can be improved.

[0082] <Cationized polymer having amino groups> The hair dye composition of the present invention may contain a cationic polymer having an amino group. By using the cationic polymer having an amino group, the effect of promoting penetration of the hair dye composition into hair can be enhanced.

[0083] Examples of the above-mentioned cationic polymers having amino groups include quaternary nitrogen-containing cellulose ether derivatives such as O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride; quaternary nitrogen-containing guar gum derivatives such as O-[2-hydroxy-3-(trimethylammonio)propyl]guar gum chloride; cationic starch, diallyl quaternary ammonium salt polymers, diallyl quaternary ammonium salt / acrylamide copolymers, quaternized polyvinylpyrrolidone derivatives, polyglycol polyamine condensates, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymers, and cationized dextran.

[0084] From the viewpoint of further enhancing the effect of promoting penetration of the hair dye composition into hair, the cationic polymer having an amino group is preferably polyquaternium-67. Polyquaternium-67 is a polymer of a quaternary ammonium salt obtained by subjecting hydroxyethyl cellulose to an addition reaction with trimethylammonium-substituted epoxide and lauryldimethylammonium-substituted epoxide, and is a cationized hydroxyethyl cellulose derivative.

[0085] When the hair dye composition of the present invention contains the cationic polymer having an amino group, the content of the cationic polymer having an amino group in 100% by mass of the hair dye composition of the present invention is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and preferably 1.5% by mass or less, more preferably 1.0% by mass or less. When the content of the cationic polymer having an amino group is equal to or more than the above lower limit and equal to or less than the above upper limit, the effect of promoting penetration of the hair dye composition into hair can be further enhanced, and dyeability can be improved.

[0086] <Fatty acid amide> The hair dye composition of the present invention may contain a fatty acid amide. By using the fatty acid amide, areas damaged by an oxidative hair dye can be repaired well, allowing the entire hair to be dyed evenly and well. Furthermore, since changes in color tone of hair dyed with the hair dye composition before and after storage are particularly likely to occur in damaged areas, repairing the damaged areas can more effectively reduce the difference in color tone of hair dyed with the hair dye composition before and after storage.

[0087] Examples of the fatty acid amide include palmitic acid amide, stearic acid amide, oleic acid amide, arachidic acid amide, behenic acid amide, and palmitoleic acid amide.

[0088] The fatty acid amide is preferably a fatty acid amide having 16 to 24 carbon atoms, more preferably palmitic acid amide, stearic acid amide, or behenic acid amide, even more preferably stearic acid amide or behenic acid amide, and particularly preferably behenic acid amide.

[0089] When the hair dye composition of the present invention contains the fatty acid amide, the content of the fatty acid amide in 100% by mass of the hair dye composition of the present invention is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, preferably 5.0% by mass or less, and more preferably 3.0% by mass or less. When the content of the fatty acid amide is above the above lower limit and below the above upper limit, damage caused by the oxidative hair dye is more effectively repaired, allowing the entire hair to be dyed evenly and well. In addition, the difference in color tone of hair dyed with the hair dye composition before and after storage can be more effectively reduced.

[0090] <Anionic surfactants> The hair dye composition of the present invention may contain an anionic surfactant. By using the anionic surfactant, it is possible to impart a cleansing effect to the hair dye composition.

[0091] Examples of the anionic surfactants include alkyl sulfates such as sodium lauryl sulfate, triethanolamine lauryl sulfate, sodium myristyl sulfate, sodium stearyl sulfate, sodium oleyl sulfate, and sodium cetyl sulfate; polyoxyethylene alkyl ether sulfates such as sodium polyoxyethylene lauryl ether sulfate and sodium polyoxyethylene myristyl ether sulfate; α-olefin sulfonates such as sodium tetradecene sulfonate; N-acyl methyl taurine salts such as sodium myristoyl methyl taurate, sodium palmitoyl methyl taurate, sodium stearoyl methyl taurate, sodium oleoyl methyl taurate, and sodium coconut oil fatty acid methyl taurate; alkyl sulfosuccinates such as dioctyl sodium sulfosuccinate and lauryl disodium sulfosuccinate; and polyoxyethylene sulfosuccinates such as polyoxyethylene lauryl disodium sulfosuccinate. Alkyl salts; monoalkyl phosphate salts such as sodium lauryl phosphate, sodium cetyl phosphate, and diethanolamine cetyl phosphate; polyoxyethylene alkyl ether phosphate salts such as sodium polyoxyethylene lauryl ether phosphate, sodium polyoxyethylene cetyl ether phosphate, sodium polyoxyethylene oleyl ether phosphate, sodium polyoxyethylene alkylphenyl ether phosphate, and triethanolamine polyoxyethylene alkylphenyl ether phosphate; N-acyl sarcosine salts such as potassium lauroyl sarcosine, triethanolamine lauroyl sarcosine, sodium myristoyl sarcosine, and sodium coconut oil fatty acid sarcosine; N-acyl-N-methyl-β-alanine salts such as sodium lauroyl methylalanine, triethanolamine lauroyl methylalanine, sodium myristoyl methylalanine, and sodium coconut oil fatty acid methylalanine;N-acylglutamates such as sodium lauroyl glutamate, triethanolamine lauroyl glutamate, sodium myristoyl glutamate, potassium stearoyl glutamate, disodium stearoyl glutamate, sodium cocoyl glutamate, and triethanolamine cocoyl glutamate; N-acylglycine salts such as potassium cocoyl glycine and sodium cocoyl glycine; alkyl ether glycol acetates such as sodium lauryl glycol acetate (sodium dodecane-1,2-diol acetate), potassium lauryl glycol acetate, sodium myristyl glycol acetate, potassium myristyl glycol acetate, sodium palmityl glycol acetate, potassium palmityl glycol acetate, sodium stearyl glycol acetate, potassium stearyl glycol acetate, sodium behenyl glycol acetate, and potassium behenyl glycol acetate;

[0092] From the viewpoint of preventing a decrease in hair dyeing power, the anionic surfactant is preferably an N-acyl-N-methyl-β-alanine salt or an N-acyl glutamate.

[0093] When the hair dye composition of the present invention contains the anionic surfactant, the content of the anionic surfactant in 100% by mass of the hair dye composition of the present invention is preferably 0.5% by mass or more, preferably 15.0% by mass or less, and more preferably 10.0% by mass or less. When the content of the anionic surfactant is equal to or more than the above lower limit and equal to or less than the above upper limit, it is possible to effectively prevent a decrease in hair dyeing power while improving cleansing properties.

[0094] <Cationic surfactant> The hair dye composition of the present invention may contain a cationic surfactant. By using the cationic surfactant, it is possible to impart a good texture to hair.

[0095] Examples of the cationic surfactant include monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, monoalkyl ether quaternary ammonium salts, alkylamines, and fatty acid amidoamines.

[0096] Examples of the monoalkyl quaternary ammonium salt include lauryltrimethylammonium chloride, myristyltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, alkyl(16,18)trimethylammonium chloride, alkyl(20-22)trimethylammonium chloride, stearyldimethylbenzylammonium chloride, myristyldimethylbenzylammonium chloride, tri(polyoxyethylene)stearylammonium chloride, and di(polyoxyethylene)oleylmethylammonium chloride.

[0097] Examples of the fatty acid amidoamine include myristate dimethylaminoethylamide, myristate dimethylaminopropylamide, myristate diethylaminoethylamide, myristate diethylaminopropylamide, palmitate dimethylaminoethylamide, palmitate dimethylaminopropylamide, palmitate diethylaminoethylamide, palmitate diethylaminopropylamide, stearic acid dimethylaminoethylamide, stearic acid dimethylaminopropylamide, stearic acid diethylaminoethylamide, stearic acid diethylaminopropylamide, stearic acid dipropylaminoethylamide, stearic acid dipropylaminopropylamide, behenic acid dimethylaminoethylamide, behenic acid dimethylaminopropylamide, behenic acid diethylaminoethylamide, and behenic acid diethylaminopropylamide.

[0098] The fatty acid amidoamine is preferably neutralized with an organic acid or an inorganic acid. The fatty acid amidoamine is preferably a fatty acid amidoamine salt. Examples of the organic acid include lactic acid, malic acid, citric acid, tartaric acid, and acetic acid. Examples of the inorganic acid include phosphoric acid, hydrochloric acid, and sulfuric acid. The fatty acid amidoamine is more preferably neutralized with lactic acid. The amounts of the organic acid and inorganic acid to be added are not particularly limited as long as they can neutralize the fatty acid amidoamine.

[0099] From the viewpoint of further improving the texture of hair, the cationic surfactant is preferably the monoalkyl-type quaternary ammonium salt or the fatty acid amidoamine, and more preferably stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, alkyl(16,18)trimethylammonium chloride, alkyl(20-22)trimethylammonium chloride, stearic acid dimethylaminopropylamide, or behenic acid dimethylaminopropylamide.

[0100] When the hair dye composition of the present invention contains the cationic surfactant, the content of the cationic surfactant in 100% by mass of the hair dye composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less. When the content of the cationic surfactant is equal to or more than the above lower limit and equal to or less than the above upper limit, the texture of the hair can be further improved.

[0101] <Amphoteric surfactant> The hair dye composition of the present invention may contain an amphoteric surfactant. By using the amphoteric surfactant, it is possible to impart a cleansing effect to the hair dye composition.

[0102] Examples of the amphoteric surfactant include alkylamidobetaine-type amphoteric surfactants such as lauric acid amidopropyl betaine and coconut oil fatty acid amidopropyl betaine; glycine-type amphoteric surfactants such as alkylglycine salts, carboxymethylglycine salts, and N-acylaminoethyl-N-2-hydroxyethylglycine salts; aminopropionic acid-type amphoteric surfactants such as alkylaminopropionates and alkyliminodipropionates; alkyldimethylaminoacetic acid betaine, alkylamidopropyldimethylaminoacetic acid betaine, and alkyldihydroxyethyl aminoacetic acid betaine-type amphoteric surfactants such as alkylaminoacetic acid betaine; sulfobetaine-type amphoteric surfactants such as alkylhydroxysulfobetaine; imidazolinium-type amphoteric surfactants such as alkylcarboxymethylhydroxyethylimidazolinium betaine; N-alkyl-N,N-dimethylammonium-N-propyl sulfonate; N-alkyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate; and N-fatty acid amidopropyl-N,N-dimethylammonium-N-(2-hydroxypropyl) sulfonate.

[0103] From the viewpoint of further improving the cleaning properties, the amphoteric surfactant is preferably an alkylamidobetaine amphoteric surfactant.

[0104] When the hair dye composition of the present invention contains the amphoteric surfactant, the content of the amphoteric surfactant in 100% by mass of the hair dye composition of the present invention is preferably 1.0% by mass or more, more preferably 5.0% by mass or more, preferably 20.0% by mass or less, more preferably 15.0% by mass or less. When the content of the amphoteric surfactant is equal to or more than the lower limit and equal to or less than the upper limit, the detergency can be improved while effectively suppressing a decrease in hair dyeing power.

[0105] <Nonionic surfactant> The hair dye composition of the present invention may contain a nonionic surfactant. By using the nonionic surfactant, it is possible to improve the cleansing properties while suppressing a decrease in hair dyeing power.

[0106] Examples of the nonionic surfactants include polyoxyethylene fatty acid esters, glycerin fatty acid esters, polyoxyethylene glycerin fatty acid esters, polyglycerin fatty acid esters, sorbitan fatty acid esters, polyoxyethylene sorbitan fatty acid esters, sucrose fatty acid esters, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyglycerin alkyl ethers, polyoxyethylene (hydrogenated) castor oil, and fatty acid alkylolamides.

[0107] From the viewpoint of further suppressing the decrease in hair dyeing power, the nonionic surfactant is preferably a sorbitan fatty acid ester, a polyoxyethylene alkyl ether, or a fatty acid alkylolamide.

[0108] When the hair dye composition of the present invention contains the nonionic surfactant, the content of the nonionic surfactant in 100% by mass of the hair dye composition of the present invention is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and preferably 7.0% by mass or less, more preferably 5.0% by mass or less. When the content of the nonionic surfactant is equal to or more than the above lower limit and equal to or less than the above upper limit, the viscosity of the hair dye composition can be further improved.

[0109] <Silicone oils other than amino-modified silicones> The hair dye composition of the present invention may contain a silicone oil other than the amino-modified silicone. By using a silicone oil other than the amino-modified silicone, the squeaky feeling during rinsing with water can be effectively suppressed.

[0110] Examples of silicone oils other than the amino-modified silicones include linear silicones such as methylpolysiloxane, highly polymerized methylpolysiloxanes having an average degree of polymerization of 650 to 7000, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and dimethiconol; cyclic silicones such as methylcyclopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane; and modified silicones such as carboxy-modified silicones, fatty acid-modified silicones, alcohol-modified silicones, aliphatic alcohol-modified silicones, epoxy-modified silicones, fluorine-modified silicones, and alkyl-modified silicones.

[0111] From the viewpoint of more effectively suppressing the squeaky feeling during washing with water, the silicone oil other than the amino-modified silicone is preferably a chain silicone.

[0112] When the hair dye composition of the present invention contains a silicone oil other than the amino-modified silicone, the content of the silicone oil other than the amino-modified silicone in 100% by mass of the hair dye composition of the present invention is preferably 0.05% by mass or more, more preferably 0.2% by mass or more, preferably 5.0% by mass or less, more preferably 3.0% by mass or less. When the content of the silicone oil other than the amino-modified silicone is equal to or more than the above lower limit and equal to or less than the above upper limit, the squeaky feeling during rinsing with water can be more effectively suppressed.

[0113] <Polyhydric alcohol> Examples of the polyhydric alcohol include ethylene glycol, propylene glycol, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol, glycerin, concentrated glycerin, diglycerin, triglycerin, glucose, maltose, maltitol, sucrose, mannitol, sorbitol, 1,2-pentanediol, 1,2-hexanediol, and 1,2-octanediol.

[0114] When the hair dye composition of the present invention contains the above-mentioned polyhydric alcohol, the content of the above-mentioned polyhydric alcohol in 100% by mass of the hair dye composition of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, preferably 10.0% by mass or less, more preferably 8.0% by mass or less.

[0115] <Higher alcohol> The higher alcohols include alcohols having a carbon number of 16 to 22. Examples of the alcohols having a carbon number of 16 to 22 include cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, oleyl alcohol, and behenyl alcohol.

[0116] When the hair dye composition of the present invention contains the above-mentioned higher alcohol, the content of the above-mentioned higher alcohol in 100% by mass of the hair dye composition of the present invention is preferably 1.0% by mass or more, more preferably 3.0% by mass or more, preferably 15.0% by mass or less, more preferably 10.0% by mass or less.

[0117] <Lower alcohol> The lower alcohol includes ethanol.

[0118] When the hair dye composition of the present invention contains the above-mentioned lower alcohol, the content of the above-mentioned lower alcohol in 100% by mass of the hair dye composition of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, preferably 20.0% by mass or less, more preferably 10.0% by mass or less.

[0119] <Hydrocarbon oil> Examples of the hydrocarbon oil include α-olefin oligomer, light isoparaffin, light liquid isoparaffin, squalane, synthetic squalane, vegetable squalane, liquid isoparaffin, and liquid paraffin.

[0120] When the hair dye composition of the present invention contains the above-mentioned hydrocarbon oil, the content of the above-mentioned hydrocarbon oil in 100% by mass of the hair dye composition of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and preferably 10.0% by mass or less, more preferably 5.0% by mass or less.

[0121] <Ester oil> The ester oil is preferably an ester oil having a fatty acid moiety with a carbon number of 12 or less. Examples of the ester oil having a fatty acid moiety with a carbon number of 12 or less include capric acid esters such as glyceryl caprate, caprylic acid esters such as glyceryl caprylate, cetyl 2-ethylhexanoate, and isononyl isononanoate.

[0122] When the hair dye composition of the present invention contains the ester oil, the content of the ester oil in 100% by mass of the hair dye composition of the present invention is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less. When the content of the ester oil is equal to or more than the above lower limit and equal to or less than the above upper limit, the hair dyeing power can be improved.

[0123] <Refreshing agent> Examples of the cooling agent include 1-menthol, 1,8-cineole, and camphor.

[0124] <Preservatives> Examples of the preservative include methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, and phenoxyethanol.

[0125] <Water> The hair dye composition of the present invention preferably contains water, and the water is preferably purified water.

[0126] The content of water in the hair dye composition of the present invention can be appropriately adjusted depending on the contents of other components. The content of water in 100% by mass of the hair dye composition of the present invention is preferably 50.0% by mass or more, more preferably 60.0% by mass or more, and preferably 90.0% by mass or less, more preferably 80.0% by mass or less.

[0127] (Other details of the hair dye composition) The state of the hair dye composition of the present invention is not particularly limited. The state of the hair dye composition of the present invention may be liquid, gel, cream, grease, or wax. From the viewpoint of more effectively exerting the effects of the present invention, the state of the hair dye composition of the present invention is preferably gel or cream, and more preferably cream. The hair dye composition of the present invention is preferably a gel hair dye composition or a cream hair dye composition, and more preferably a cream hair dye composition.

[0128] The hair dye composition of the present invention is preferably a color shampoo or a color treatment, more preferably a color treatment, which is also generally called a color rinse, a color conditioner, or a color butter.

[0129] <Color Shampoo> The color shampoo is applied to hair when washing, and by applying the color shampoo to hair, washing the hair, and rinsing off the color shampoo, the hair can be dyed at the same time as washing.

[0130] When the hair dye composition of the present invention is a color shampoo, from the viewpoint of improving cleansing properties, the hair dye composition of the present invention preferably contains a surfactant (at least one surfactant) selected from the group consisting of the anionic surfactant, the cationic surfactant, the amphoteric surfactant, and the nonionic surfactant, and more preferably contains the amphoteric surfactant and / or the nonionic surfactant.

[0131] When the hair dye composition of the present invention is a color shampoo, the content of the surfactant is preferably 1.0% by mass or more, more preferably 5.0% by mass or more, preferably 25.0% by mass or less, more preferably 20.0% by mass or less, based on 100% by mass of the hair dye composition of the present invention. When the content of the surfactant is above the above lower limit and below the above upper limit, it is possible to effectively prevent a decrease in hair dyeing power while improving cleansing properties. The content of the surfactant is the total content of all the surfactants in the hair dye composition of the present invention.

[0132] <Color Treatment> The color treatment is used by applying it to hair that has been washed with shampoo, etc. For example, the color treatment can be applied to washed hair, left on for 3 to 20 minutes, and then rinsed off to dye the hair.

[0133] When the hair dye composition of the present invention is a color treatment, from the viewpoint of effectively suppressing the squeaky feeling during rinsing with water, the hair dye composition of the present invention preferably contains a component (at least one component) selected from the group consisting of the urea, the amino-modified silicone, the cationic polymer having an amino group, the cationic surfactant, and a silicone oil other than the amino-modified silicone. Only one of the above components may be used, or two or more of them may be used.

[0134] When the hair dye composition of the present invention is a color treatment, the content of the component selected from the group consisting of the urea, the amino-modified silicone, the cationic polymer having an amino group, the cationic surfactant, and the silicone oil other than the amino-modified silicone, based on 100% by mass of the hair dye composition of the present invention, is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, preferably 10.0% by mass or less, and more preferably 5.0% by mass or less. When the content of the component is above the lower limit, the squeaky feeling during rinsing can be more effectively suppressed. Note that when the content of the component exceeds 10.0% by mass, the component may accumulate on the hair during continuous use of the hair dye composition, causing stiffness, compared to when the content is 10.0% by mass or less.

[0135] When the hair dye composition of the present invention is a color treatment, it is preferable that the hair dye composition of the present invention contains the above-mentioned polyhydric alcohol from the viewpoint of increasing the solubility of the dye.

[0136] When the hair dye composition of the present invention is a color treatment, it is preferable that the hair dye composition of the present invention contains the above-mentioned higher alcohol from the viewpoint of improving storage stability.

[0137] When the hair dye composition of the present invention is a color treatment, it is preferable that the hair dye composition of the present invention contains the hydrocarbon oil described above, from the viewpoint of improving the applicability.

[0138] The pH of the hair dye composition of the present invention is preferably 3.5 or higher, more preferably 4.5 or higher, even more preferably 5.0 or higher, preferably 8.0 or lower, and more preferably 6.5 or lower. When the pH is above the lower limit and below the upper limit, the conditioning properties can be further improved and the hair dyeing power can be further enhanced. When the hair dye composition of the present invention is a color shampoo, the pH is preferably 4.5 or higher and 6.5 or lower, and when it is a color treatment, the pH is preferably 3.5 or higher and 6.5 or lower.

[0139] The hair dye composition of the present invention can be produced by a known method for producing a hair dye composition, such as by stirring the components with a paddle mixer or the like to homogenize them.

[0140] When the hair dye composition of the present invention is a color shampoo, the color shampoo can be produced, for example, as follows.

[0141] The aqueous components are mixed at room temperature (15°C to 25°C), and then a surfactant is added as needed to obtain a first mixture. The oily components are mixed at 70°C to 80°C to obtain a second mixture. The second mixture is gradually added to the first mixture while stirring with a paddle mixer or the like to emulsify, and then cooled to room temperature to obtain a color shampoo. Components (A) to (E), a pH adjuster, etc. can be blended as appropriate.

[0142] When the hair dye composition of the present invention is a color treatment, the color treatment can be produced, for example, as follows.

[0143] The aqueous components are mixed at 70°C to 90°C to obtain a first mixture. The oily components are mixed at 70°C to 90°C to obtain a second mixture. While maintaining the temperatures of the first and second mixtures at 70°C to 90°C, the second mixture is gradually added to the first mixture while stirring with a paddle mixer or the like to emulsify, and then the mixture is cooled to 20°C to 40°C to obtain a color treatment. Components (A) to (E), a pH adjuster, etc. can be blended as appropriate.

[0144] This specification also discloses a hair dye composition (hereinafter sometimes referred to as hair dye composition (X)) having the following constitution.

[0145] A hair dye composition (X) comprising components (A), (C), and (D), and containing or not containing component (B), wherein the mass ratio of the content of component (A) to the total content of components (A) and (B) (content of component (A) / total content of components (A) and (B)) is 0.35 or more.

[0146] In addition, the components (A), (B), (C), and (D) in the hair dye composition (X) are the same as those described above. When the hair dye composition (X) contains the component (B), the mass ratio (content of the component (A) / total content of the components (A) and (B)) is 0.35 or more.

[0147] Hair dye composition (X) also uses a combination of component (C), a blue dye that is more likely to remain in less damaged hair parts than in more damaged hair parts, and component (D), a blue dye that is more likely to remain in more damaged hair parts than in less damaged hair parts, so that changes in hue and tone before and after fading can be reduced regardless of the level of hair damage.

[0148] In the hair dye composition (X), the mass ratio (content of component (A) / total content of component (A) and component (B)) is preferably 0.40 or more, and preferably 0.90 or less. When the mass ratio (content of component (A) / total content of component (A) and component (B)) is equal to or more than the lower limit and equal to or less than the upper limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of damage to the hair.

[0149] The hair dye composition (X) preferably contains the above-mentioned component (E). By using component (E), hair can be dyed in a low-saturation color tone (e.g., a grayish color tone), thereby more effectively exerting the effects of the present invention.

[0150] The preferred configuration of the hair dye composition (X) (such as the content and mass ratio of components (A) to (E)) is the same as the preferred configuration described in the section on the hair dye composition above, so further description will be omitted.

[0151] The hair dye composition (X) may also contain the other components described above. The preferred configurations of the other components in the hair dye composition (X) (such as the types and contents of the other components) are the same as those described in the section on the hair dye composition above, and therefore will not be described here.

[0152] Furthermore, other details of the hair dye composition (X) are the same as the preferred configurations described in the section on other details of the hair dye composition above, and therefore will not be described here. [Example]

[0153] The present invention will be specifically described below with reference to examples and comparative examples, but the present invention is not limited to the following examples. The following Examples 1, 11, 18, and 19 are reference examples.

[0154] The polyquaternium-67 used in the examples and comparative examples is as follows:

[0155] Polyquaternium-67: Product name "SoftCAT Polymer SL-30", manufactured by The Dow Chemical Company

[0156] (Examples 1 to 20 and Comparative Examples 1 to 8) Hair dye compositions were prepared by blending the ingredients shown in Tables 1 to 5 below (blending units are mass %). The blend amounts in the tables (blending amounts in 100% by mass of the hair dye composition) are shown as pure amounts (unit: mass %). The pH of the obtained hair dye compositions was measured using a pH meter (Horiba, Ltd., "F-74").

[0157] The hair dye compositions obtained in Examples 1 to 20 were all cream-like in appearance.

[0158] (evaluation) The obtained hair dye compositions were evaluated as follows.

[0159] The test hair bundles used in the following evaluations (highly damaged test hair bundle, low damaged test hair bundle) were prepared as follows.

[0160] <Preparation of highly damaged test hair bundles> A test human hair bundle (manufactured by Staffs, light brown, weighing 1 g) was permed using a perm solution (a first agent containing ammonium thioglycolate as an active ingredient and a second agent containing sodium bromate as an active ingredient). The perm treatment consisted of applying 2 g of the first agent of the perm solution to the test human hair bundle, leaving it for 15 minutes, then rinsing it off, and then applying 2 g of the second agent of the perm solution, leaving it for 15 minutes, and then rinsing it off. The permed test human hair bundle was dried with a hair dryer to prepare a highly damaged test hair bundle.

[0161] <Preparation of low-damage test hair bundles> As a low-damage test hair bundle, an untreated test human hair bundle (manufactured by Staffs, light brown, weighing 1 g) was used as is.

[0162] <Dyeing of test hair bundles> Using the obtained hair dye composition, highly damaged test hair tresses and less damaged test hair tresses were dyed as follows.

[0163] The test hair bundle was washed with a commercially available shampoo and then lightly dried. Next, 1 g of the obtained hair dye composition was applied and spread over the entire hair bundle (hair) using a brush. After leaving it for 15 minutes from the start of application, the applied hair dye composition was washed off and dried with a hair dryer. In this way, a test hair bundle that had not been subjected to a fading test was obtained.

[0164] <Fade test of dyed test hair bundle (repeated washing)> The dyed test hair bundle (the test hair bundle that had not been subjected to the fading test) was washed five times. The hair washing process consisted of washing with a commercially available shampoo, then applying a commercially available conditioner and rinsing it off. The test hair bundle that had been washed five times was then dried with a hair dryer to obtain a test hair bundle that had been subjected to the fading test.

[0165] (1) Evaluation of hair dye compositions containing only red dyes (Example 1 and Comparative Examples 1 and 2) The compositions of the hair dye compositions prepared in Example 1 and Comparative Examples 1 and 2 are shown in Table 1 below. For Example 1 and Comparative Examples 1 and 2, which contain only red dyes, highly damaged and lightly damaged test hair tresses that had not undergone a fading test, as well as highly damaged and lightly damaged test hair tresses that had undergone a fading test, were visually observed. This evaluation was carried out by three expert evaluators.

[0166] [Table 1]

[0167] (1-1) Evaluation Results of Example 1 Comparison of unbleached and bleached highly damaged test hair tresses: No change in saturation was observed between the highly damaged test hair bundle that had not undergone the fading test and the highly damaged test hair bundle that had undergone the fading test, and although there were changes in hue and brightness (color depth), these were within the acceptable range.

[0168] Comparison of test hair tresses that have not undergone fading testing and have undergone fading testing but are low in damage: No change in saturation was observed between the low-damage test hair bundle that had not undergone the fading test and the low-damage test hair bundle that had undergone the fading test, and although there were changes in hue and brightness (color depth), they were within the acceptable range.

[0169] Therefore, for the hair dye composition obtained in Example 1, the same degree of discoloration within the acceptable range was confirmed for the highly damaged test hair tresses and the less damaged test hair tresses, and as a result, almost no difference in hue or tone was observed between the highly damaged test hair tresses and the less damaged test hair tresses.

[0170] (1-2) Evaluation Results of Comparative Example 1 Comparison of unbleached and bleached highly damaged test hair tresses: No change in saturation or hue was observed between the highly damaged test hair bundle that had not been subjected to the fading test and the highly damaged test hair bundle that had been subjected to the fading test. On the other hand, the highly damaged test hair bundle that had been subjected to the fading test was lighter in color, and a large change in brightness was observed between the highly damaged test hair bundle that had not been subjected to the fading test and the highly damaged test hair bundle that had been subjected to the fading test.

[0171] Comparison of test hair tresses that have not undergone fading testing and have undergone fading testing but are low in damage: No change in saturation or hue was observed between the low-damage test hair bundle that had not undergone the fading test and the low-damage test hair bundle that had undergone the fading test, and although there was a change in brightness (color depth), it was within the acceptable range.

[0172] For this reason, with the hair dye composition obtained in Comparative Example 1, a clear difference in color tone was observed between the highly damaged test hair tress and the less damaged test hair tress.

[0173] (1-3) Evaluation results of Comparative Example 2 Comparison of unbleached and bleached highly damaged test hair tresses: No change in saturation or hue was observed between the highly damaged test hair bundle that had not undergone the fading test and the highly damaged test hair bundle that had undergone the fading test, and no change in brightness (color depth) was observed either.

[0174] Comparison of test hair tresses that have not undergone fading testing and have undergone fading testing but are low in damage: No change in saturation or hue was observed between the low-damage test hair bundle that had not undergone the fading test and the low-damage test hair bundle that had undergone the fading test, and although there was a change in brightness (color depth), it was within the acceptable range.

[0175] In the hair dye composition obtained in Comparative Example 2, no fading was observed in the highly damaged test hair bundle, while fading within an acceptable range was observed in the less damaged test hair bundle. As a result, a clear change in color tone was observed between the highly damaged and less damaged test hair bundles.

[0176] (2) Evaluation of hair dye compositions containing dyes other than red dyes (Examples 2 to 20 and Comparative Examples 3 to 8) For hair dye compositions containing dyes other than red dyes, highly damaged test hair tresses that had not undergone the fading test and highly damaged test hair tresses that had undergone the fading test were visually observed. This evaluation was carried out by three expert evaluators.

[0177] The changes in hue and color tone were evaluated according to the following evaluation criteria.

[0178] <Evaluation criteria> ○ (Good): There is almost no change in hue or saturation between the highly damaged test hair bundle that has not been subjected to the fading test and the highly damaged test hair bundle that has been subjected to the fading test (when the highly damaged test hair bundle that has not been subjected to the fading test and the highly damaged test hair bundle that has been subjected to the fading test are observed separately, no change in hue or saturation can be recognized). △ (Acceptable range): There is a difference in hue and / or saturation between the highly damaged test hair bundle that has not undergone the fading test and the highly damaged test hair bundle that has undergone the fading test, but each is within the acceptable range. × (Poor): A clear change is observed in at least one of the hue and saturation between the highly damaged test hair bundle that has not been subjected to the fading test and the highly damaged test hair bundle that has been subjected to the fading test.

[0179] In Examples 2 to 20 and Comparative Examples 3 to 8, the test hair bundles that had undergone the discoloration test showed some change in brightness compared to the test hair bundles that had not undergone the discoloration test, but this was within an acceptable range.

[0180] The compositions and results are shown in Tables 2 to 5 below.

[0181] [Table 2]

[0182] [Table 3]

[0183] [Table 4]

[0184] [Table 5]

[0185] Formulation examples of the hair dye composition of the present invention are shown below.

[0186] (Formulation example 1) Color treatment (cream) Basic Red 51 0.01% by mass Basic Purple 2 0.01% by mass Basic Blue 124 0.02% by mass HC blue 15 0.01% by mass Basic Tea 16 0.03% by mass Basic Yellow 87 0.02% by mass Stearyl alcohol 8.0% by mass Mineral oil 4.0% by mass Glyceryl stearate 2.5% by mass Seteth-40 1.5% by mass Stearamidopropyl dimethylamine 2.0% by mass Dimethicone 3.0% by mass Amodimethicone 0.2% by mass Polyquaternium-67 0.3% by mass Lactic acid (pH adjuster) - appropriate amount (adjust to pH 5.25) Dipropylene glycol 5.0% by mass Phenoxyethanol 0.5% by mass Sodium benzoate 0.5% by mass Fragrance 0.5% by mass Ethanol 5.0% by mass Purified water remainder Total 100% by mass

[0187] (Formulation example 2) Color treatment (cream) Basic Red 51 0.01% by mass Basic Purple 2 0.01% by mass Basic Blue 124 0.02% by mass HC blue 15 0.01% by mass Basic Tea 16 0.03% by mass Basic Yellow 87 0.02% by mass Stearyl alcohol 7.0% by mass Mineral oil 3.0% by mass Ethylhexyl palmitate 3.0% by mass Glyceryl stearate 2.5% by mass Seteth-40 1.5% by mass Steartrimonium chloride 1.0% by mass Stearamidopropyl dimethylamine 2.0% by mass Dimethicone 3.0% by mass Amodimethicone 0.2% by mass Polyquaternium-67 0.3% by mass Citric acid (pH adjuster) - appropriate amount (adjust to pH 6.00) Sodium citrate (pH adjuster) - appropriate amount (adjust to pH 6.00) Dipropylene glycol 5.0% by mass Phenoxyethanol 0.5% by mass Fragrance 0.5% by mass Ethanol 5.0% by mass Purified water remainder Total 100% by mass

[0188] (Formulation example 3) Color treatment (cream) Basic Red 51 0.01% by mass Basic Purple 2 0.01% by mass Basic Blue 124 0.02% by mass HC blue 15 0.01% by mass Basic Tea 16 0.05% by mass Basic Yellow 57 0.02% by mass Stearyl alcohol 8.0% by mass Mineral oil 4.0% by mass Glyceryl stearate 2.5% by mass Seteth-40 1.5% by mass Stearamidopropyl dimethylamine 2.0% by mass Polyquaternium-67 0.3% by mass Citric acid (pH adjuster) - appropriate amount (adjust to pH 5.25) Sodium citrate (pH adjuster) - appropriate amount (adjust to pH 5.25) Dipropylene glycol 5.0% by mass Phenoxyethanol 0.5% by mass Fragrance 0.5% by mass Ethanol 5.0% by mass Purified water remainder Total 100% by mass

[0189] (Formulation example 4) Color treatment (cream) Basic Red 51 0.005% by mass Basic Purple 2 0.005% by mass Basic Blue 124 0.010% by mass HC blue 15 0.005% by mass Basic Tea 16 0.015% by mass Basic Yellow 87 0.010% by mass HC Yellow 2 0.020% by mass HC blue 2 0.200% by mass Stearyl alcohol 8.0% by mass Mineral oil 4.0% by mass Glyceryl stearate 2.5% by mass Seteth-40 1.5% by mass Stearamidopropyl dimethylamine 2.0% by mass Polyquaternium-67 0.3% by mass Citric acid (pH adjuster) - appropriate amount (adjust to pH 5.25) Sodium citrate (pH adjuster) - appropriate amount (adjust to pH 5.25) Dipropylene glycol 5.0% by mass Phenoxyethanol 0.5% by mass Fragrance 0.5% by mass Ethanol 5.0% by mass Purified water remainder Total 100% by mass

[0190] (Formulation example 5) Color shampoo Basic Red 51 0.03% by mass Basic Purple 2 0.03% by mass Basic Blue 124 0.05% by mass HC blue 15 0.02% by mass Basic Tea 16 0.10% by mass Basic Yellow 87 0.04% by mass Sodium lauroylmethylalanine 3.0% by mass TEA-cocoyl glutamate 3.0% by mass Lauramidopropyl betaine 6.0% by mass Cocamidomethyl MEA 2.0% by mass Glycerin 3.0% by mass Polyquaternium-10 0.5% by mass Citric acid (adjust to pH 5) Sodium citrate (pH adjuster) - appropriate amount (adjust to pH 5) Phenoxyethanol 0.5% by mass Sodium benzoate 0.5% by mass Purified water remainder Total 100% by mass

Claims

1. The composition includes the following components A, B, C, and D: A hair dye composition, wherein the mass ratio of the content of the component A to the total content of the component A and the component B is 0.35 or more and 0.90 or less. Component A: Basic Red 51 Component B: Basic Purple 2 Component C: Basic Blue 124 Component D: HC Blue 15 and / or Basic Blue 75

2. 2. The hair dye composition according to claim 1, wherein the mass ratio of the content of said component C to the total content of said component C and said component D is 0.55 or more and 0.85 or less.

3. The hair dye composition according to claim 1 or 2, wherein the mass ratio of the content of Component A to the total content of Component A and Component B is 0.40 or more.

4. A composition comprising the following components A, B, and C: Contains or does not contain the following component D: a mass ratio of the content of the component C to the total content of the component C and the component D is more than 0.85 and 1.00 or less; A hair dye composition, wherein the mass ratio of the content of the component A to the total content of the component A and the component B is 0.60 or more and 0.90 or less. Component A: Basic Red 51 Component B: Basic Purple 2 Component C: Basic Blue 124 Component D: HC Blue 15 and / or Basic Blue 75

5. A composition comprising the following components A, B, and D: Contains or does not contain the following component C: a mass ratio of the content of the component C to the total content of the component C and the component D is 0 or more and less than 0.55, A hair dye composition, wherein the mass ratio of the content of the component A to the total content of the component A and the component B is 0.35 or more and 0.60 or less. Component A: Basic Red 51 Component B: Basic Purple 2 Component C: Basic Blue 124 Component D: HC Blue 15 and / or Basic Blue 75

6. The hair dye composition according to any one of claims 1 to 5, wherein a mass ratio of the total content of said Component A and said Component B to the total content of said Component C and said Component D is 0.30 or more and 3.00 or less.

7. The hair dye composition according to any one of claims 1 to 6, comprising the following component E: Component E: Basic Brown 16 and / or Basic Yellow 87

8. A hair dye composition as described in claim 7, wherein the mass ratio of the content of component E to the total content of components A, B, C, D, and E is 0.15 or more and 0.75 or less.

Images