JP7757005B2 - Hair dye composition - Google Patents

Description

The present invention relates to a hair dye composition used for dyeing hair.

Hair dye compositions containing direct dyes are known as hair dye compositions that cause minimal damage to the hair and scalp. However, since it is difficult to achieve the desired color with a single direct dye, hair dye compositions containing direct dyes typically contain two or more direct dyes.

Among direct dyes, basic dyes are convenient because they can dye hair without an oxidation reaction, and are dyes with 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.

Japanese Patent Application Laid-Open No. 2020-121956

Damaged areas of hair generally have a greater negative charge than undamaged areas. When dyeing hair with a basic dye, the positively charged basic dye is more likely to bond with damaged areas of hair, which have a greater negative charge.

However, hair dyed with basic dyes is prone to fading when washed repeatedly. Therefore, when multiple basic dyes are used, if the fading properties of the basic dyes vary 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.

Furthermore, the dyeability of basic dyes and the persistence of basic dyes on hair vary depending on the level of damage to the hair. 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 is to change before and after fading. In addition, if there are areas of the hair with different levels of damage, the degree of fading of hue and tone will differ between areas with less damage and areas with more damage, and the difference in hue or tone after fading will also be greater between these areas.

The hair dye composition described in Patent Document 1 above can reduce the changes in hue and tone before and after fading to some extent, but the effect is not sufficient.

The object of the present invention is to provide a hair dye composition that can minimize changes in hue and tone before and after fading, regardless of the level of hair damage.

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.

Component (A): Basic Red 51
Component (B): Basic Purple 2

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

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

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

In the hair dye composition of the present invention, it is preferable that the mass ratio of the content of component (C) to the total content of component (C) and component (D) is 0.55 or more and 0.85 or less.

In the hair dye composition of the present invention, it is preferable that the mass ratio of the content of component (A) to the total content of component (A) and component (B) is 0.40 or more.

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

The hair dye composition of the present invention contains or does not contain component (C), and contains component (D), and preferably 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.

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

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

Component (E): Basic Brown 16 and/or Basic Yellow 87

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

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

The present invention provides a hair dye composition containing 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.

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

The hair dye composition of the present invention can minimize changes in hue and tone before and after fading, regardless of the level of hair damage.

The present invention is described in detail below.

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

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

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

Accordingly, the hair dye composition of the present invention contains component (A) and component (B).

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.

The hair dye composition of the present invention has the above-mentioned features, so it can minimize changes in hue and tone before and after fading, regardless of the level of hair damage.

Component (A) is a red dye that is less likely to remain in highly damaged hair sections (it is more likely to remain in less damaged hair sections than in more damaged hair sections). On the other hand, component (B) is a red dye that is more likely to remain in highly damaged hair sections (it is more likely to remain in more damaged hair sections than in less damaged hair sections). The 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 dyeing and after repeated washing.

In addition, while conventional hair dye compositions are particularly prone to changes in hue and tone before and after fading in low-saturation tones, the hair dye composition of the present invention uses a combination of component (A) and component (B) in a specific mass ratio, which minimizes changes in hue and tone before and after fading, even in low-saturation tones, thereby making the effects of the present invention even more effective.

In addition, the level of damage to hair can 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 greater 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 level of hair damage, 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 level of hair damage. Therefore, even if there are regions of the hair with different levels of damage, unevenness in hue and color tone between regions of the hair after fading can be reduced.

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

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

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

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

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

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

By combining the hair dye composition of the present invention with component (E), it becomes easier to create a hair dye composition for dyeing hair in low-saturation shades.

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

In this specification, the content of each component refers to the total content of all of that component contained in the hair dye composition. For example, the content of component (D) refers to the total content of all components (D) in the hair dye composition.

In addition, in this specification, the term "total content" refers to the sum of the contents of each component. However, if at least one of the components is optional, and the content of that optional component is 0% by mass, the total content will still be referred to as the sum of the contents of each component. For example, the total content of component (C) and component (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.

The following describes in detail each component used in the hair dye composition of the present invention.

(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 parts. Component (A) is a red dye that is more likely to remain in less damaged hair parts than in highly damaged hair parts.

Component (B) is Basic Purple 2. Component (B) is a red dye that is more likely to remain in highly damaged areas of hair. Component (B) is a red dye that is more likely to remain in highly damaged areas of hair than in less damaged areas.

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 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.

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 greater. When this mass ratio (content of component (A) / total content of component (A) and component (B)) is at least the above lower limit, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

The total content of component (A) and component (B) in 100% by mass of the hair dye composition of the present invention 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.

Of the 100% by mass of basic dye contained 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. 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.

(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) can increase the variety of hues and tones that can be imparted to hair. Furthermore, compared to when only a red-based dye is contained, 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, so that hue changes due to fading can be suppressed, and the effects of the present invention can be more effectively exhibited. Therefore, it is preferable that the hair dye composition of the present invention contains component (C).

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 areas of hair than in less damaged areas. The use of component (D) increases the variety of hues and tones that can be imparted to hair. Furthermore, compared to when a red-based dye is used 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, even when component (D) is included, the hair dye composition of the present invention uses a combination of components (A) and (B) in a specific mass ratio, which suppresses hue changes due to fading and allows the effects of the present invention to be more effectively achieved. Therefore, it is preferable that the hair dye composition of the present invention includes component (D).

The hair dye composition of the present invention may contain HC Blue 15, Basic Blue 75, or both HC Blue 15 and Basic Blue 75 as component (D). From the perspective 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.

Furthermore, as mentioned above, component (C) is more likely to remain in hair parts with a lower level of damage than in hair parts with a higher level of damage, and component (D) is more likely to remain in hair parts with a higher level of damage than in hair parts with a lower level of damage. Therefore, by using component (C) and component (D) in combination, it is possible to reduce changes in hue and tone before and after fading, regardless of the level of hair damage, just as when component (A) and component (B) are used 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).

The total content of component (C) and component (D) in 100% by mass of the hair dye composition of the present invention 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.

Of the 100% by mass of basic dye contained in the hair dye composition of the present invention, the total content of component (C) and component (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. When this 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 this 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.

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 above 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 above mass ratio (content of component (A)/total content of component (A) and component (B)) will be further explained in the following three cases.

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.

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 less than or equal to 1.00.

Case (3): When 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.

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, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

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 above lower 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.

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 the 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.

In the above case (1), 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 preferably 0.60 or more, and preferably 0.80 or less. In this case, regardless of the level of hair damage, it is possible to further reduce the change in hue and tone before and after fading. Furthermore, regardless of the level of hair damage, it is possible to dye hair more uniformly.

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 pronounced.

(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 to a low-saturation tone (e.g., a grayish tone), thereby making it possible to more effectively exhibit the effects of the present invention.

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 perspective 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.

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) (content of component (E)/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 (content of component (E)/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 the effect of minimizing changes in hue and tone before and after fading is more pronounced.

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 above lower limit and equal to or less than the above upper limit, hair can be dyed well. When the total content is 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.

Of the 100% by mass of basic dye contained 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. When this total content is at or above 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. Furthermore, of the 100% by mass of basic dye contained in the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) may be 100% by mass, 100% by mass or less, or less than 100% by mass.

Of the 100% by mass of dye contained in the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) 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 this total content is at or above 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. Furthermore, of the 100% by mass of dye contained in the hair dye composition of the present invention, the total content of components (A), (B), (C), (D), and (E) may be 100% by mass, 100% by mass or less, or less than 100% by mass.

(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, cationized 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.

<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).

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.

<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.

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

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, and more preferably 0.2% by mass or less. When the amino group content is above the above lower limit and below the above upper limit, the effect of promoting penetration of the hair dye composition into hair can be further enhanced.

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 greater 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, resulting in better dyeability.

<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.

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]hydroxyethyl cellulose 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.

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

When the hair dye composition of the present invention contains the above-mentioned cationic polymer having an amino group, the content of the above-mentioned cationic polymer having an amino group, relative to 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 above-mentioned cationic polymer having an amino group is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the effect of promoting penetration of the hair dye composition into hair can be further enhanced, resulting in better dyeability.

<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.

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

The above-mentioned 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.

When the hair dye composition of the present invention contains the above-mentioned fatty acid amide, the content of the above-mentioned fatty acid amide, based on 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, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less. When the content of the above-mentioned fatty acid amide is above the above-mentioned lower limit and below the above-mentioned upper limit, areas damaged by the oxidative hair dye are 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.

<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.

The above-mentioned 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 surfactants 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. Methyl taurine salts; alkyl sulfosuccinate salts such as dioctyl sodium sulfosuccinate and disodium lauryl sulfosuccinate; polyoxyethylene alkyl sulfosuccinate salts such as polyoxyethylene lauryl disodium sulfosuccinate; monoalkyl phosphate salts such as sodium lauryl phosphate, sodium cetyl phosphate, and diethanolamine cetyl phosphate; polyoxyethylene lauryl ether sodium phosphate, polyoxyethylene cetyl ether sodium phosphate, sodium polyoxyethylene oleyl ether phosphate, sodium polyoxyethylene alkylphenyl ether phosphate, and triethanolamine polyoxyethylene alkylphenyl ether phosphate. oxyethylene alkyl ether phosphate ester salts; 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; sodium lauroyl glutamate, triethanolamine lauroyl glutamate, sodium myristoyl glutamate, potassium stearoyl glutamate, disodium stearoyl glutamate, coconut oil fatty acid acyl glutamate N-acylglutamates such as sodium and coconut oil fatty acid acylglutamate triethanolamine; N-acylglycine salts such as coconut oil fatty acid acylglycine potassium and coconut oil fatty acid acylglycine sodium; 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.

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

When the hair dye composition of the present invention contains the above-mentioned anionic surfactant, the content of the above-mentioned 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 above-mentioned anionic surfactant is above the above-mentioned lower limit and below the above-mentioned upper limit, it is possible to effectively prevent a decrease in hair dyeing power while improving cleansing properties.

<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.

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.

Examples of the monoalkyl quaternary ammonium salts 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.

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.

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. It is more preferable that the fatty acid amidoamine is neutralized with lactic acid. The amounts of the organic acid and inorganic acid to be added are not particularly limited as long as they are capable of neutralizing the fatty acid amidoamine.

From the perspective of further improving hair texture, the cationic surfactant is preferably the monoalkyl 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.

When the hair dye composition of the present invention contains the above-mentioned cationic surfactant, the content of the above-mentioned 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 above-mentioned cationic surfactant is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the texture of the hair can be further improved.

<Amphoteric surfactants>
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.

The above amphoteric surfactants 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 Examples include 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.

From the perspective of further enhancing cleaning properties, the amphoteric surfactant is preferably an alkylamidobetaine amphoteric surfactant.

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, and more preferably 15.0% by mass or less. When the content of the amphoteric surfactant is equal to or greater 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.

<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.

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.

To further prevent a decrease in hair dyeing power, the nonionic surfactant is preferably a sorbitan fatty acid ester, a polyoxyethylene alkyl ether, or a fatty acid alkylol amide.

When the hair dye composition of the present invention contains the above-mentioned nonionic surfactant, the content of the above-mentioned 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 above-mentioned nonionic surfactant is above the above-mentioned lower limit and below the above-mentioned upper limit, the viscosity of the hair dye composition can be further improved.

<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.

Examples of silicone oils other than the amino-modified silicones mentioned above include linear silicones such as methylpolysiloxane, highly polymerized methylpolysiloxanes with 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 silicone, fatty acid-modified silicone, alcohol-modified silicone, aliphatic alcohol-modified silicone, epoxy-modified silicone, fluorine-modified silicone, and alkyl-modified silicone.

From the perspective of more effectively suppressing the squeaky feeling when rinsing with water, it is preferable that the silicone oil other than the above amino-modified silicone be a chain silicone.

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, relative to 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, and 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 above the above lower limit and below the above upper limit, the squeaky feeling during rinsing can be more effectively suppressed.

<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.

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, and preferably 10.0% by mass or less, more preferably 8.0% by mass or less.

<Higher alcohol>
Examples of the higher alcohol include alcohols having 16 to 22 carbon atoms. Examples of the alcohols having 16 to 22 carbon atoms include cetyl alcohol, stearyl alcohol, isostearyl alcohol, 2-octyldodecanol, oleyl alcohol, and behenyl alcohol.

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, and preferably 15.0% by mass or less, more preferably 10.0% by mass or less.

<Lower alcohol>
The lower alcohol includes ethanol.

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, and preferably 20.0% by mass or less, more preferably 10.0% by mass or less.

<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.

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.

<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.

When the hair dye composition of the present invention contains the above-mentioned ester oil, the content of the above-mentioned ester oil, 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, and preferably 5.0% by mass or less, more preferably 3.0% by mass or less. When the content of the above-mentioned ester oil is equal to or greater than the above-mentioned lower limit and equal to or less than the above-mentioned upper limit, the hair dyeing power can be improved.

<Refreshing agent>
The cooling agents include 1-menthol, 1,8-cineole, camphor, and the like.

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

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

The water content in the hair dye composition of the present invention can be adjusted appropriately depending on the content of other ingredients. The water content, based on 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.

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.

The hair dye composition of the present invention is preferably a color shampoo or a color treatment, and more preferably a color treatment. Color treatments are also commonly called color rinses, color conditioners, or color butters.

<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.

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 surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants, and more preferably contains the amphoteric surfactants and/or the nonionic surfactants.

When the hair dye composition of the present invention is a color shampoo, the content of the above surfactant is preferably 1.0% by mass or more, more preferably 5.0% by mass or more, preferably 25.0% by mass or less, and 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 above surfactant is equal to or greater 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. The content of the above surfactant is the total content of all of the above surfactants in the hair dye composition of the present invention.

<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.

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 may be used.

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 at or above the lower limit, the squeaky feeling during rinsing can be more effectively suppressed. Note that when the hair dye composition is used continuously, if the content of the component exceeds 10.0% by mass, the component may accumulate on the hair, causing stiffness, compared to when the content is 10.0% by mass or less.

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.

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 in order to improve storage stability.

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 contain the above-mentioned hydrocarbon oil in order to improve application properties.

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, and preferably 8.0 or lower, more preferably 6.5 or lower. When the pH is above the above lower limit and below the above 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.

The hair dye composition of the present invention can be produced by any known method for producing hair dye compositions. Examples of methods for producing the hair dye composition of the present invention include a method in which the components are stirred and homogenized using a paddle mixer or the like.

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

The aqueous components are mixed at room temperature (15°C to 25°C), and then a surfactant is added as needed and mixed 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 similar to emulsify, and then cooled to room temperature to obtain a color shampoo. Components (A) to (E), pH adjusters, etc. can be added as appropriate.

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

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 similar to emulsify, and the mixture is then cooled to 20°C to 40°C to obtain the color treatment. Components (A) to (E), pH adjusters, etc. can be blended as appropriate.

This specification also discloses a hair dye composition (hereinafter sometimes referred to as hair dye composition (X)) having the following composition:

Hair dye composition (X) contains components (A), (C), and (D), and contains or does not contain component (B), and 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.

Note that components (A), (B), (C), and (D) in hair dye composition (X) are each the components described above. Furthermore, when hair dye composition (X) contains component (B), the mass ratio (content of component (A)/total content of components (A) and (B)) is 0.35 or greater.

Hair dye composition (X) also uses a combination of component (C), a blue-based dye that is more likely to remain in less damaged hair than in more damaged hair, and component (D), a blue-based dye that is more likely to remain in more damaged hair than in less damaged hair. This minimizes changes in hue and tone before and after fading, regardless of the level of hair damage.

In hair dye composition (X), the above 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 above 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, changes in hue and tone before and after fading can be further reduced, regardless of the level of hair damage.

The hair dye composition (X) also preferably contains the aforementioned 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 achieving the effects of the present invention.

The preferred composition of hair dye composition (X) (such as the composition of the contents and mass ratios of components (A) to (E)) is the same as the preferred composition described in the section on hair dye compositions above, so further description is omitted.

Hair dye composition (X) may also contain the other components described above. The preferred configuration of the other components in hair dye composition (X) (such as the types and amounts of the other components) is the same as the preferred configuration described in the section for the hair dye composition above, and therefore will not be described here.

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, so further description will be omitted.

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

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

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

(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 % by mass). The blend amounts in the tables (amount blended in 100% by mass of the hair dye composition) are shown as pure amounts (unit: % by mass). The pH of the obtained hair dye compositions was measured using a pH meter (Horiba, Ltd., "F-74").

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

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

The test hair bundles used in the following evaluations (highly damaged test hair bundles, low damaged test hair bundles) were prepared as follows:

<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.

<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.

<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.

The test hair bundle was washed with a commercially available shampoo and then lightly patted dry. Next, 1 g of the obtained hair dye composition was applied and worked into 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 rinsed off and dried with a hair dryer. In this way, a test hair bundle was obtained that had not been subjected to a color fading test.

<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 discoloration test) was washed five times. The hair washing process consisted of washing with a commercially available shampoo, followed by 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 discoloration test.

(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.

(1-1) Evaluation results of Example 1 Comparison of highly damaged test hair bundles that have not undergone the fading test and those that have undergone the fading test:
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.

Comparison of low-damage test hair tresses that have not undergone fading testing and those that have undergone fading testing:
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.

For this reason, with the hair dye composition obtained in Example 1, the same degree of discoloration within the acceptable range was confirmed for the highly damaged and less damaged test hair tresses, and as a result, there was almost no difference in hue or tone between the highly damaged and less damaged test hair tresses.

(1-2) Evaluation results of Comparative Example 1 Comparison of highly damaged test hair bundles that had not undergone the fading test and those that had undergone the fading test:
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.

Comparison of low-damage test hair tresses that have not undergone fading testing and those that have undergone fading testing:
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 an acceptable range.

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 and less damaged test hair strands.

(1-3) Evaluation results of Comparative Example 2 Comparison of highly damaged test hair bundles that have not undergone the fading test and those that have undergone the fading test:
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.

Comparison of low-damage test hair tresses that have not undergone fading testing and those that have undergone fading testing:
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 an acceptable range.

For the hair dye composition obtained in Comparative Example 2, no discoloration was observed in the highly damaged test hair bundle, while discoloration within an acceptable range was observed in the less damaged test hair bundle. As a result, a clear difference in color tone was observed between the highly damaged and less damaged test hair bundles.

(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.

Hue and tone changes were evaluated according to the following criteria:

<Evaluation criteria>
○ (Good): There is almost no difference in 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 (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 difference in hue or saturation can be recognized).
Δ (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.

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

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

The following is a formulation example of the hair dye composition of the present invention.

(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
Ceteth-40 1.5% by mass
Stearamidopropyldimethylamine 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 Total balance 100% by mass

(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
Ceteth-40 1.5% by mass
Steartrimonium chloride 1.0% by mass
Stearamidopropyldimethylamine 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 Total balance 100% by mass

(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
Ceteth-40 1.5% by mass
Stearamidopropyldimethylamine 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 Total balance 100% by mass

(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
Ceteth-40 1.5% by mass
Stearamidopropyldimethylamine 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 Total balance 100% by mass

(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 Total balance 100% by mass

Claims (8)

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. 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. 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. The composition includes the following component A, the following component B, and the following component 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 The composition contains the following component A, the following component B, and the following component 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 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. 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. The hair dye composition according to claim 7 , wherein 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 .