JP2023066567A - Composition for hair and hair dyeing method - Google Patents

Abstract

To provide a composition for hair capable of improving the hair dyeing property with an oxidative hair dye for the hair in which metallic ions such as copper ions are present and a hair dyeing method using the composition for hair.SOLUTION: There are provided: a composition for hair used for the hair prior to dyeing with an oxidative hair dye, which is obtained by blending one or two more selected from the group consisting of glycine or its salt, taurine or its salt, serine or its salt, threonine or its salt, alanine or its salt, histidine or its salt, lysine or its salt, glutamic acid or its salt, arginine or its salt, phenylalanine or its salt, ethylenediaminetetraacetic acid or its salt, hydroxyethanediphosphonic acid or its salt, ethylenediaminehydroxyethyl triacetic acid or its salt, ethylenediaminedisuccinic acid or its salt, and diethylenetriamine pentaacetic acid or its salt; and a hair dyeing method for dyeing hair with an oxidative hair dye after the composition for hair is used for the hair.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to a hair composition used for hair before hair is dyed with an oxidative hair dye, and a hair dyeing method using the hair composition.

Oxidative hair dyes used for dyeing hair are based on the hair dyeing principle of dyeing the oxidative dyes permeated into the hair by oxidation polymerization. In comparison, it realizes long-term maintenance of hair color retention.

As an example of hair dyeing using an oxidative hair dye, the following Patent Document 1 discloses that a specific amount of polyacrylic acid amide, behenyl alcohol, and polyoxyethylene behenyl ether are contained in an oxidative hair dye or the like. An oxidative hair dye is disclosed which is excellent in the gloss of hair after hair is applied.

JP 2019-043873 A

Hair to be dyed is routinely washed according to beauty customs, and tap water used for hair washing contains metal ions such as copper ions. Therefore, metal ions such as copper ions are accumulated in the hair through routine hair washing.

When hair dyeing with an oxidizing hair dye containing an oxidizing agent is applied to hair in which such metal ions such as copper ions are present, the oxidation reaction of the oxidizing agent occurs due to the influence of the metal ions during the hair dyeing process. is accelerated and oxidation dyes are decomposed, resulting in a decrease in hair dyeability such as fading of dyeing, uneven dyeing, and discoloration (dyeing to a different color than desired). There have been problems with doing so. Therefore, it is desired to improve the dyeability of hair with an oxidative hair dye for hair in which metal ions such as copper ions are present.

In addition, in order to improve the dyeability of hair with an oxidative hair dye, various measures have been taken, such as blending components of the oxidative hair dye. However, there is a technique for improving the dyeability of hair with an oxidative hair dye by using a hair composition other than the oxidative hair dye to change the condition of the hair before using the oxidative hair dye. There is room for improvement, and newer proposals are desired.

An object of the present invention is to provide a hair composition capable of improving the dyeability of hair with an oxidative hair dye even for hair in which metal ions such as copper ions are present. Another object of the present invention is to provide a hair dyeing method using the hair composition.

As a result of intensive studies, the present inventor found that glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, alanine or its salt, histidine or its salt, lysine or its salt, glutamic acid or its salt, arginine or its salt, phenylalanine or its salt, ethylenediaminetetraacetic acid or its salt, hydroxyethanediphosphonic acid or its salt, ethylenediamine hydroxyethyl triacetic acid or After using a hair composition containing one or more selected from the group consisting of salts thereof, ethylenediaminedisuccinic acid or salts thereof, and diethylenetriaminepentaacetic acid or salts thereof, dyeing using an oxidative hair dye The present inventors have completed the present invention based on the finding that hair treatment improves the dyeability of hair with an oxidative hair dye.

That is, the hair composition of the present invention is a hair composition that is used for hair before being dyed with an oxidative hair dye, and comprises glycine or a salt thereof, taurine or a salt thereof, serine or a salt thereof, threonine. or a salt thereof, alanine or a salt thereof, histidine or a salt thereof, lysine or a salt thereof, glutamic acid or a salt thereof, arginine or a salt thereof, phenylalanine or a salt thereof, ethylenediaminetetraacetic acid or a salt thereof, hydroxyethanediphosphonic acid or a salt thereof, One or more selected from the group consisting of ethylenediaminehydroxyethyltriacetic acid or its salts, ethylenediaminedisuccinic acid or its salts, and diethylenetriaminepentaacetic acid or its salts is blended.

From the viewpoint of further improving the dyeability of hair with an oxidative hair dye, the hair composition of the present invention comprises glycine or a salt thereof, taurine or a salt thereof, serine or a salt thereof, threonine or a salt thereof, alanine or a salt thereof, histidine or its salts, lysine or its salts, glutamic acid or its salts, arginine or its salts, phenylalanine or its salts, ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediamine hydroxyethyl triacetic acid or its salts, The amount of one or more selected from the group consisting of ethylenediaminedisuccinic acid or its salts and diethylenetriaminepentaacetic acid or its salts is preferably 1% by mass or more.

The hair composition of the present invention contains at least glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine or A combination of one or more selected from the group of salts thereof is preferred.

The composition for hair of the present invention comprises glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine or its salts, from the viewpoint of further improving hair dyeability with an oxidative hair dye. 1 or 2 or more selected from the group of, and
One or two or more selected from the group consisting of ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts are blended. preferable.

The hair dyeing method of the present invention is a hair dyeing method in which the hair is dyed with an oxidative hair dye after using any one of the hair compositions described above.

INDUSTRIAL APPLICABILITY The present invention can provide a hair composition capable of improving the dyeability of hair with an oxidative hair dye. Moreover, the present invention can provide a hair dyeing method using the hair composition.

The present invention will be described below based on embodiments of the present invention (hereinafter referred to as present embodiments).

<Hair composition>
The hair composition of the present embodiment is used for hair before dyeing with an oxidative hair dye, and contains glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, alanine or its salts, histidine or its salts, lysine or its salts, glutamic acid or its salts, arginine or its salts, phenylalanine or its salts, ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediamine hydroxyethyl triacetic acid or its salts, A hair composition containing one or more selected from the group consisting of ethylenediaminedisuccinic acid or its salts and diethylenetriaminepentaacetic acid or its salts.
If the hair composition of the present embodiment is applied to the hair before dyeing with the oxidative hair dye, and then the hair is dyed with the oxidative hair dye, the dyeability of the hair with the oxidative hair dye is improved.

The term “hair dyeability with an oxidative hair dye” refers to deep dyeing (deepness of hair dyeing) and uniform dyeing (whole hair) when hair is dyed with an oxidative hair dye. Uniform dyeing in the color), and the presence or absence of discoloration or its degree (if there is discoloration, and the degree of discoloration). In addition, "discoloration" means dyeing to a color different from the desired color. In the following description, the dyeability of hair with the oxidative hair dye may be simply referred to as "hair dyeability".
In addition, the term "improved hair dyeability (improved hair dyeability) by an oxidative hair dye" means that, compared to the object to be compared, it has excellent deep dyeing and level dyeing, and there is no or a degree of discoloration. It means that there is less

In the following description, glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, alanine or its salts, histidine or its salts, lysine or its salts, glutamic acid or its salts, arginine or its salts, Phenylalanine or salts thereof, ethylenediaminetetraacetic acid or salts thereof, hydroxyethanediphosphonic acid or salts thereof, ethylenediaminehydroxyethyl triacetic acid or salts thereof, ethylenediaminedisuccinic acid or salts thereof, and diethylenetriaminepentaacetic acid or salts thereof, It is sometimes referred to as “a specific component such as glycine”.

Glycine or a salt thereof, taurine or a salt thereof, serine or a salt thereof, threonine or a salt thereof, alanine or a salt thereof, histidine or a salt thereof, lysine or a salt thereof, glutamic acid or a salt thereof, arginine in the hair composition of the present embodiment or salts thereof, phenylalanine or its salts, ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, ethylenediaminedisuccinic acid or its salts, and diethylenetriaminepentaacetic acid or its salts The lower limit of the blending amount of one or more selected from the group (hereinafter sometimes referred to as the total blending amount of specific components such as glycine) is 0 from the viewpoint of further improving hair dyeability. .1% by mass or more is preferable, 0.5% by mass or more is more preferable, 1% by mass or more is even more preferable, 2% by mass or more is even more preferable, and 3% by mass or more is particularly preferable. In addition, from the viewpoint of cost reduction, the upper limit of the total amount of specific components such as glycine in the composition for hair of the present embodiment is preferably 30% by mass or less, more preferably 20% by mass or less, and 15% by mass. More preferred are:

(glycine or its salt)
The hair composition of the present embodiment may contain one or more glycines or salts thereof. Examples of the glycine or a salt thereof include glycine and glycine salts (glycine sodium salt, glycine potassium salt, glycine hydrochloride, etc.).

When glycine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of the mixture (when both glycine and a salt of glycine are added, the total amount of the mixture is The lower limit of the amount (the same applies to the description of the following upper limit) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 3% by mass or more. When glycine or a salt thereof is added to the composition for hair according to the present embodiment, the upper limit of the amount to be added is preferably 30% by mass or less, more preferably 20% by mass or less, from the viewpoint of cost reduction. , 15% by mass or less is more preferable.

(Taurine or its salt)
The hair composition of the present embodiment may contain one or more taurines or salts thereof. Examples of the taurine or salts thereof include taurine and taurine salts (taurine sodium salt, taurine potassium salt, taurine hydrochloride, taurine sodium salt, etc.).

When taurine or a salt thereof is blended in the hair composition of the present embodiment, the blending amount thereof (when both taurine and a salt thereof are blended, the total blending amount is , the same applies to the description of the amount of the following upper limit) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When taurine or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the amount is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(serine or its salt)
The hair composition of the present embodiment may contain one or more serines or salts thereof. Examples of the serine or a salt thereof include serine and a serine salt (hydrochloride of serine, etc.).

When serine or a salt thereof is blended in the hair composition of the present embodiment, the blending amount thereof (when both serine and a salt thereof are blended, the total blending amount is , the same applies to the description of the amount of the following upper limit) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When serine or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the content is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(Threonine or its salt)
The hair composition of the present embodiment may contain one or more threonines or salts thereof. Examples of the threonine or salts thereof include threonine and threonine salts (such as threonine hydrochloride).

When threonine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of the mixture (when both threonine and a salt of threonine are added, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. Further, when threonine or a salt thereof is added to the composition for hair of the present embodiment, the upper limit of the amount to be added is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(Alanine or its salt)
The hair composition of the present embodiment may contain one or two or more types of alanine or a salt thereof. Examples of the alanine or a salt thereof include alanine and alanine salts (alanine sodium salt, alanine potassium salt, alanine hydrochloride, etc.).

When alanine or a salt thereof is blended in the hair composition of the present embodiment, the blending amount thereof (when both alanine and alanine salt are blended, the total blending amount is The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When alanine or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the amount is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(Histidine or its salt)
The hair composition of the present embodiment may contain one or more histidines or salts thereof. Examples of histidine or salts thereof include histidine and histidine salts (histidine hydrochloride, etc.).

When histidine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of the mixture (if both histidine and a salt of histidine are included, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When histidine or a salt thereof is added to the composition for hair according to the present embodiment, the upper limit of the amount to be added is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , and 7% by mass or less are more preferable.

(lysine or its salt)
The hair composition of the present embodiment may contain one or more lysines or salts thereof. Lysine is a component represented by H ₂ N—CH(C ₄ H ₈ NH ₂ )—COOH. Examples of the lysine or its salt include lysine and lysine salts (eg, hydrochloride of lysine).

When lysine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of lysine (if both lysine and a salt of lysine are added, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When lysine or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the amount is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , and 7% by mass or less are more preferable.

(Glutamic acid or its salt)
The hair composition of this embodiment may contain one or more glutamic acids or salts thereof. Examples of the glutamic acid or salts thereof include glutamic acid and glutamic acid (sodium glutamic acid, potassium glutamic acid, etc.).

When glutamic acid or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving hair dyeability, the amount of glutamic acid (when both glutamic acid and a salt of glutamic acid are included, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. When glutamic acid or a salt thereof is added to the composition for hair according to the present embodiment, the upper limit of the content is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(arginine or its salt)
The hair composition of the present embodiment may contain one or more arginines or salts thereof. Examples of the lysine or its salt include arginine and arginine salts (such as arginine hydrochloride).

When arginine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of arginine (when both arginine and arginine salt are included, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.5% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more. Further, when arginine or a salt thereof is added to the composition for hair of the present embodiment, the upper limit of the amount to be added is preferably 10% by mass or less, more preferably 8% by mass or less, from the viewpoint of cost reduction. , 7% by mass or less is more preferable.

(Phenylalanine or its salt)
The hair composition of the present embodiment may contain one or more phenylalanine or a salt thereof. Examples of the phenylalanine or salts thereof include phenylalanine and phenylalanine salts (such as phenylalanine hydrochloride).

When phenylalanine or a salt thereof is added to the hair composition of the present embodiment, from the viewpoint of further improving the dyeability of hair, the amount of the mixture (when both phenylalanine and the salt of phenylalanine are added, the total amount The lower limit of the amount (the same applies to the description of the compounding amount of the upper limit below) is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1% by mass or more. In addition, when phenylalanine or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the amount to be added is preferably 2% by mass or less, and 1.8% by mass or less, from the viewpoint of cost reduction. More preferably, 1.5% by mass or less is even more preferable.

(Ethylenediaminetetraacetic acid or its salt)
The hair composition of the present embodiment may contain one or more ethylenediaminetetraacetic acid or salts thereof. Examples of the ethylenediaminetetraacetic acid or salts thereof include ethylenediaminetetraacetic acid, ethylenediaminetetraacetic acid salts (e.g., sodium salts of ethylenediaminetetraacetic acid (ethylenediaminetetraacetic acid disodium, ethylenediaminetetraacetic acid trisodium, ethylenediaminetetraacetic acid tetrasodium), potassium salts of ethylenediaminetetraacetic acid (dipotassium ethylenediaminetetraacetate, trisodium ethylenediaminetetraacetate, tetrapotassium ethylenediaminetetraacetate, etc.);

When ethylenediaminetetraacetic acid or a salt thereof is blended in the hair composition of the present embodiment, the blending amount thereof (both ethylenediaminetetraacetic acid and the salt of ethylenediaminetetraacetic acid is blended from the viewpoint of further improving the dyeability of hair). The lower limit value of (the total amount of the mixture, the same applies to the following description of the upper limit amount of the mixture) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and 0.4% by mass or more. is more preferred. Further, when ethylenediaminetetraacetic acid or a salt thereof is blended in the hair composition of the present embodiment, the upper limit of the blending amount is preferably 30% by mass or less, more preferably 20% by mass or less, from the viewpoint of cost reduction. More preferably, 15% by mass or less is even more preferable. The upper limit of the blending amount is preferably 8% by mass or less, more preferably 3% by mass or less, and more preferably 2% by mass or less, from the viewpoint of further improving the dyeability of hair, which is another aspect of the above. 0.8% by mass or less is particularly preferred.

(Hydroxyethanediphosphonic acid or its salt)
The hair composition of the present embodiment may contain one or more hydroxyethanediphosphonic acids or salts thereof. Examples of the hydroxyethanediphosphonic acid or salts thereof include hydroxyethanediphosphonic acid, salts of hydroxyethanediphosphonic acid (e.g., sodium salts of hydroxyethanediphosphonic acid (trisodium hydroxyethanediphosphonate, hydroxyethanediphosphonic tetrasodium phosphonate, etc.), and potassium salts of hydroxyethanediphosphonic acid (tripotassium hydroxyethanediphosphonate, tetrapotassium hydroxyethanediphosphonate, etc.).

When hydroxyethanediphosphonic acid or a salt thereof is blended in the hair composition of the present embodiment, the blending amount (hydroxyethanediphosphonic acid and hydroxyethanediphosphonic acid of When both salts are blended, the total blending amount, the same applies to the description of the following upper limit blending amount) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, 0.4% by mass or more is more preferable. Further, when hydroxyethanediphosphonic acid or a salt thereof is added to the composition for hair of the present embodiment, the upper limit of the amount to be added is preferably 30% by mass or less, more preferably 20% by mass, from the viewpoint of cost reduction. The following are more preferable, and 15% by mass or less is even more preferable.

(Ethylenediamine hydroxyethyl triacetic acid or its salt)
The hair composition of the present embodiment may contain one or more ethylenediaminehydroxyethyltriacetic acid or salts thereof.
Examples of the ethylenediamine hydroxyethyl triacetic acid or salts thereof include ethylenediamine hydroxyethyl triacetic acid, ethylenediamine hydroxyethyl triacetic acid salts (e.g., sodium salts of ethylenediamine hydroxyethyl triacetic acid (e.g., trisodium ethylenediamine hydroxyethyl triacetate), ethylenediamine hydroxy Potassium salts of ethyl triacetate (ethylenediamine hydroxyethyl triacetate tripotassium, etc.).

When ethylenediamine hydroxyethyl triacetic acid or a salt thereof is blended in the hair composition of the present embodiment, the blending amount (ethylenediamine hydroxyethyl triacetic acid and ethylenediamine hydroxyethyl triacetic acid of When both salts are blended, the total blending amount, the same applies to the description of the following upper limit blending amount) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, 0.4% by mass or more is more preferable. Further, when ethylenediaminehydroxyethyl triacetic acid or a salt thereof is blended in the composition for hair of the present embodiment, the upper limit of the blending amount is preferably 30% by mass or less, more preferably 20% by mass, from the viewpoint of cost reduction. The following are more preferable, and 15% by mass or less is even more preferable.

(Ethylenediamine disuccinic acid or its salt)
The hair composition of the present embodiment may contain one or more ethylenediaminedisuccinic acid or a salt thereof. Examples of the ethylenediamine disuccinic acid or salts thereof include ethylenediamine disuccinic acid, ethylenediamine disuccinic acid salts (e.g., sodium salts of ethylenediamine disuccinic acid (trisodium ethylenediamine disuccinate, etc.), and potassium salts of ethylenediamine disuccinic acid. (e.g. tripotassium ethylenediaminedisuccinate)).

When ethylenediaminedisuccinic acid or a salt thereof is blended in the hair composition of the present embodiment, the blending amount (both ethylenediaminedisuccinic acid and the salt of ethylenediaminedisuccinic acid is When blended, the total blended amount, the same applies to the description of the following upper limit blended amount) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and 0.4 % by mass or more is more preferable. Further, when ethylenediaminedisuccinic acid or a salt thereof is blended in the composition for hair of the present embodiment, the upper limit of the blending amount is preferably 30% by mass or less, and 20% by mass or less, from the viewpoint of cost reduction. is more preferable, and 15% by mass or less is even more preferable.

(Diethylenetriaminepentaacetic acid or its salt)
The hair composition of the present embodiment may contain one or more diethylenetriaminepentaacetic acid or salts thereof. Examples of the diethylenetriaminepentaacetic acid or salts thereof include diethylenetriaminepentaacetic acid, diethylenetriaminepentaacetic acid salts (e.g., sodium salts of diethylenetriaminepentaacetic acid (pentasodium diethylenetriaminepentaacetic acid, etc.), potassium salts of diethylenetriaminepentaacetic acid (pentotassium diethylenetriaminepentaacetic acid), etc.) etc.).

When diethylenetriaminepentaacetic acid or a salt thereof is blended in the hair composition of the present embodiment, the blending amount thereof (both diethylenetriaminepentaacetic acid and the salt of diethylenetriaminepentaacetic acid is blended from the viewpoint of further improving hair dyeability. The lower limit value of (the total amount of the mixture, the same applies to the following description of the upper limit amount of the mixture) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and 0.4% by mass or more. is more preferred. When diethylenetriaminepentaacetic acid or a salt thereof is added to the hair composition of the present embodiment, the upper limit of the amount is preferably 30% by mass or less, more preferably 20% by mass or less, from the viewpoint of cost reduction. More preferably, 15% by mass or less is even more preferable.

(Group 1)
From the viewpoint of further improving hair dyeability, the hair composition of the present embodiment contains at least glycine or a salt thereof, taurine or a salt thereof, serine or a salt thereof, threonine or a salt thereof, as a specific component such as glycine. and one or more selected from the group of alanine or a salt thereof (hereinafter sometimes referred to as group 1).
One or more selected from the group consisting of glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine or its salts in the composition for hair of the present embodiment. When 1 to 2 or more types are blended, the total blending amount, the same applies to the description of the following upper limit of the blending amount) is 0.1% by mass from the viewpoint of further improving hair dyeability. 0.5% by mass or more is more preferable, 1% by mass or more is still more preferable, and 3% by mass or more is particularly preferable. In addition, the amount of one or more selected from the group consisting of glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine or its salts in the hair composition of the present embodiment. is preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less, from the viewpoint of cost reduction.

From the viewpoint of further improving the dyeability of hair, the composition for hair of the present embodiment more preferably contains at least glycine or a salt thereof as the specific component such as glycine. From the same viewpoint as above, the composition for hair of the present embodiment preferably contains at least a combination of glycine or a salt thereof and taurine or a salt thereof as specific components such as glycine.

(Group 2)
From the viewpoint of further improving hair dyeability, the hair composition of the present embodiment contains at least ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyl One or two or more selected from the group of acetic acid or its salts and ethylenediamine disuccinic acid or its salts (hereinafter sometimes referred to as group 2) is preferably blended.
One selected from the group consisting of ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyl triacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts in the hair composition of the present embodiment, or The lower limit of the blending amount of two or more types (when two or more types from Group 2 are blended, the total blending amount is the same in the description of the following upper limit of the blending amount), the dyeability of hair is further improved. From a viewpoint, 0.1 mass % or more is preferable, 0.2 mass % or more is more preferable, 0.5 mass % or more is still more preferable, and 1 mass % or more is especially preferable. 1 selected from the group consisting of ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts in the hair composition of the present embodiment. From the viewpoint of cost reduction, the upper limit of the compounding amount of the seed or two or more is preferably 30% by mass or less, more preferably 20% by mass or less, and even more preferably 15% by mass or less.

From the viewpoint of excellent hair bleaching power, the hair composition of the present embodiment more preferably contains at least hydroxyethanediphosphonic acid or a salt thereof as a specific component such as glycine. The bleaching power refers to the bleaching ability of melanin pigment present in hair in hair dyeing treatment with an oxidative hair dye.

(Combination of Group 1 and Group 2)
From the viewpoint of further improving hair dyeability, the hair composition of the present embodiment contains glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine as specific components such as glycine. or one or more selected from the group of salts thereof, and ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts One or two or more selected from the group are preferably blended.

From the viewpoint of further improving hair dyeability, the hair composition of the present embodiment contains, as specific components such as glycine, a combination of glycine or a salt thereof and taurine or a salt thereof, ethylenediaminetetraacetic acid or a salt thereof, More preferably, one or more selected from the group consisting of hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts is blended.

The composition for hair of the present embodiment contains at least one of the following combinations [1] to [3] as a specific component such as glycine from the viewpoint of excellent leveling property and hair bleaching power. preferable.
[1] A combination of glycine or a salt thereof and hydroxyethanediphosphonic acid or a salt thereof [2] A combination of taurine or a salt thereof and hydroxyethanediphosphonic acid or a salt thereof [3] Glycine or a salt thereof and Combination of taurine or its salt and hydroxyethanediphosphonic acid or its salt

(Optional component)
The composition for hair according to the present embodiment may optionally contain components other than specific components such as glycine (hereinafter referred to as optional components). The type and blending amount of the optional component can be appropriately set according to the dosage form of the composition for hair of the present embodiment. Optional components include, for example, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants, alcohols, polyhydric alcohols, sugars, oils and fats, ester oils, fatty acids, hydrocarbons, waxes, silicones, synthetic Polymer compounds, semi-synthetic polymer compounds, natural polymer compounds, proteins, animal and plant extracts, microbial-derived substances, inorganic compounds, fragrances, preservatives, UV absorbers, pigments, reducing agents, oxidizing agents, acids, alkalis, pigments , water, etc.

(water)
The composition for hair according to the present embodiment preferably contains water from the viewpoint of facilitating the incorporation of specific components such as glycine. The amount of water to be blended in the composition for hair of the present embodiment is not particularly limited, and may be set as appropriate. be.

(polyhydric alcohol)
From the viewpoint of enhancing the storage stability of the hair composition at low temperatures, the hair composition of the present embodiment preferably contains one or more polyhydric alcohols. Examples of the polyhydric alcohol include polyhydric alcohols having 2 to 8 carbon atoms (eg, ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, glycerin, diglycerin, butylene glycol). As for the blending amount of the polyhydric alcohol, for example, the lower limit is 0.1% by mass or more and the upper limit is 15% by mass or less.

(dosage form)
The dosage form of the composition for hair of the present embodiment is not particularly limited, and various dosage forms such as liquid, cream, gel, spray, and foam can be used. The dosage form of the composition for hair according to the present embodiment is preferably liquid from the viewpoint of facilitating uniform application of the composition for hair to the hair, and cream or A gel form is preferred.

(viscosity)
The viscosity of the hair composition of the present embodiment may be appropriately set according to the dosage form of the hair composition. The viscosity of the hair composition is not particularly limited, but the viscosity after 60 seconds measured at 25° C. using an appropriate rotor using a Brookfield viscometer is, for example, 1 mPa·s or more and 50000 mPa·s or less. is.
In addition, when the hair composition of the present embodiment is cream-like or gel-like, the viscosity of the second agent is, for example, 1000 mPa·s or more and 50000 mPa·s or less. In addition, when the hair composition of the present embodiment is liquid, the viscosity of the first agent is, for example, 100 mPa·s or less.

(pH)
The pH value at 25°C of the hair composition of the present embodiment may be set as appropriate, and is, for example, 5 or more and 12 or less. The pH value at 25°C is a value obtained by measuring the hair composition of the present embodiment at 25°C with a known pH meter.

(Product form)
The product form of the hair composition of the present embodiment is, for example, a pretreatment agent used before hair dyeing treatment with an oxidative hair dye.

(Production method)
The method for producing the composition for hair of the present embodiment can be produced by a known method for producing a composition for hair. As an example of the production method, when water is used as an optional component, there is a method of mixing water with a specific component such as glycine in an appropriate blending amount.

(how to use)
The hair composition of the present embodiment can be applied to the hair before being dyed with an oxidative hair dye in an appropriate amount by a method such as coating or spraying. The composition for hair according to the present embodiment may be used in such a manner that it is rinsed after being applied to the hair, or may be used in such a manner that it is not rinsed off. From the viewpoint of further improving the dyeability of the hair, the composition for hair of the present embodiment is preferably used in such a manner that it is not washed off after being applied to the hair.
After using the hair composition of the present embodiment, the hair is subsequently dyed by a known hair dyeing treatment using an oxidative hair dye, which will be described later.

After using the hair composition of the present embodiment on the hair, the hair may be dyed with an oxidative hair dye while the hair is wet, or the hair may be dyed with the oxidative hair dye while the hair is dry. You can also dye your hair. After the hair composition of the present embodiment is applied to the hair, if the hair is dyed with an oxidative hair dye while the hair is wet, the oxidative hair dye can be easily applied to the hair and the hair dyeing process can be easily performed. It is preferable from the viewpoint of facilitating.

(target hair)
The hair to be treated with the hair composition of the present embodiment is the hair before being dyed with the oxidative hair dye. The term "hair before being dyed with an oxidative hair dye" means hair before being dyed with an oxidative hair dye in the hair dyeing process.
The hair before being dyed with the oxidative hair dye may be hair that has been dyed with an oxidative hair dye, or hair that has not been chemically treated with an oxidative hair dye. good too.

(Oxidative hair dye)
The oxidative hair dye may be a known oxidative hair dye. The oxidation hair dyes include, for example, oxidation dyes, alkaline agents, and alkaline ones containing an oxidizing agent. The dosage form of the oxidative hair dye is preferably a cream form from the viewpoint of handling properties such as application to the hair and dripping.

As the oxidation dye, one or more selected from known dye intermediates that develop color by oxidation reaction can be used. Dye intermediates include phenylenediamine derivatives (eg, toluene-2,5-diamine sulfate, nitroparaphenylenediamine hydrochloride, paraphenylenediamine, etc.). Moreover, as the oxidation dye, one or more selected from known couplers that exhibit a color tone when oxidized by a dye intermediate may be used. Couplers include phenylenediamine derivatives (2,4-diaminophenoxyethanol hydrochloride, metaphenylenediamine hydrochloride, etc.), aminophenol derivatives (5-aminoorthocresol, metaaminophenol, etc.), resorcinol, and the like.
The blending amount of the oxidation dye in the oxidative hair dye may be appropriately set, but for example, the lower limit is 0.001% by mass or more and the upper limit is 5% by mass or less.

The alkaline agent promotes the action of the oxidizing agent contained in the oxidative hair dye, and also swells the hair to improve the penetration of the dye into the hair, thereby improving the dyeability of the hair. Examples of the alkali agent include metal hydroxides (e.g., sodium hydroxide, potassium hydroxide, etc.), metal carbonates (e.g., sodium carbonate, potassium carbonate, etc.), metal phosphates (e.g., sodium phosphate, etc.). ), ammonia, ammonium salts (eg, ammonium carbonate, ammonium sulfate, etc.), alkanolamines (eg, monoethanolamine, triethanolamine, isopropanolamine, etc.). The amount of the alkaline agent to be blended in the oxidative hair dye may be appropriately set, but for example, the lower limit is 0.1 mass or more and the upper limit is 10 mass or less.

Examples of the oxidizing agent include hydrogen peroxide. The blending amount of the oxidizing agent in the oxidative hair dye may be appropriately set, but for example, the lower limit is 0.1% by mass or more and the upper limit is 5% by mass or less.

The oxidative hair dye includes, for example, a two-component oxidative hair dye in which an agent containing an oxidative dye and an alkaline agent and another agent containing an oxidizing agent are mixed and used for dyeing hair. The amounts of the oxidation dye, the alkaline agent, and the oxidizing agent in each agent in the two-agent oxidative hair dye may be appropriately set according to the dosage form and the like.

<Hair dyeing method>
The hair dyeing method of the present embodiment is a hair dyeing method in which the hair is dyed with an oxidative hair dye after using the hair composition of the present embodiment described above.

The hair dyeing method of the present embodiment includes a hair dyeing pretreatment step in which the hair composition of the present embodiment is used on the hair before being dyed with an oxidative hair dye, and a hair dyeing pretreatment step in which the hair composition of the present embodiment is used. and an oxidative hair dyeing step using an oxidative hair dye on the hair afterward.

(Hair dyeing pretreatment process)
In the hair dyeing pretreatment step, in the same manner as in the method of using the hair composition of the present embodiment described above, the hair before being dyed with an oxidative hair dye is applied in an appropriate amount by a method such as spraying. This is the process used. The composition for hair according to the present embodiment may be used in such a manner that it is rinsed after being applied to the hair, or may be used in such a manner that it is not rinsed off. From the viewpoint of further improving the dyeability of the hair, the composition for hair of the present embodiment is preferably used in such a manner that it is not washed off after being applied to the hair.

(Oxidation hair dyeing process)
The oxidative hair dyeing step is a step of dyeing the hair with the oxidative hair dye described above after using the hair composition of the present embodiment. As a hair dyeing method, the hair may be dyed by a known hair dyeing treatment using an oxidative hair dye.

EXAMPLES The present invention will be described in detail below based on examples, but the present invention is not limitedly interpreted based on the description of these examples.

(Examples 1-25, Comparative Examples 1-2, Reference Example 1)
The hair compositions of Examples 1 to 25, Comparative Examples 1 to 2, and Reference Example 1 were prepared by mixing each component in a conventional manner so as to have the compositions shown in Tables 1 to 8 below. The numerical values of the components shown in Tables 1 to 8 are % by mass. In addition, the notation of "-" in the component column indicates that the component is not blended.

Using each of the prepared hair compositions, the following hair treatments were performed to evaluate the hair dyeability.

(hair treatment)
Two hair color cups (capacity: 300 mL) containing tap water were prepared, one of which contained a 10-yen coin (10-yen bronze coin), and the other containing no 10-yen coin.
Next, in order to evaluate the hair compositions of Examples 1 to 25 and Comparative Examples 1 and 2, a plurality of yak hair bundles (manufactured by Beaulux Co., Ltd.: BM-YK-A, length 10 cm, weight 1 g) was immersed for 3 to 7 days to perform copper treatment on the tresses. In order to evaluate the hair composition of Reference Example 1d, a bundle of yak hair (manufactured by Beaulux Co., Ltd.: product number BM-YK-A, length 10 cm) was placed in a hair coloring cup containing no 10-yen coin. , weighing 1 g) were soaked for 3-7 days.
The hair tresses treated with copper or tresses not treated with copper were removed from the hair color cup and towel-dried. Next, using a copper-treated hair bundle, 1 g of each of the hair compositions of Examples or Comparative Examples shown in Tables 1 to 8 was applied to the hair bundle and spread uniformly. In addition, 1 g of the hair composition of Reference Example 1 having the composition shown in Table 8 was applied to a hair tress that had not been subjected to copper treatment, and the composition was spread evenly. Subsequently, an oxidative hair dye obtained by mixing equal amounts of Ordeve Addicthy 9-SA (containing an oxidative dye and an alkali agent) and Ordeve Addicthy Oxidan 6.0 (containing hydrogen peroxide) manufactured by Milbon was applied. , 2 g was applied to each hair bundle, and allowed to stand at room temperature for 20 minutes to perform oxidation hair dyeing treatment. After the oxidation hair dyeing treatment, the hair tresses were rinsed with water to wash away the oxidation hair dye, and each hair tress was dried with a dryer.
Using each hair tress after drying, hair dyeability was evaluated according to the following evaluation method and evaluation criteria.

(Evaluation method)
Evaluation of hair dyeability was carried out by visual sensory evaluation by five panelists who routinely evaluate oxidative hair dyes. Uniform staining of the whole), presence or absence of discoloration or its degree (presence or absence of discoloration, and if there is discoloration, its degree)) After comprehensively judging, the following evaluations were made by a panel of five panelists Evaluated according to criteria. Note that discoloration refers to dyeing to a color different from the desired color.

(Evaluation criteria)
A: The hair bundle used as an evaluation object is superior in hair dyeability compared to the hair bundle used as a reference.
Equivalent: The hair bundle to be evaluated has the same hair dyeability as the reference hair bundle.
×: The hair bundle used as an evaluation target is inferior in hair dyeability compared to the hair bundle used as a reference.

(Evaluation results)
Tables 1 to 8 below show the evaluation results of hair dyeability when using the hair compositions of Examples 1 to 25, Comparative Examples 1 to 2, and Reference Example 1. In Tables 1 to 8, the reference in the evaluation column indicates that the hair tress using each example was used as the reference, and the evaluation column is indicated by hatching. For the sake of convenience, each indicates an evaluation of × compared to each evaluation criterion.

(Examples 1 to 9, Comparative Examples 1 and 2)
Table 1 shows the evaluation results when the hair compositions of Examples 1 to 9 and Comparative Examples 1 and 2 were used. The evaluation criteria are the hair compositions of Comparative Example 1, Example 9, Example 6, or Example 5.

The results shown in Table 1 show that the hair dyeing properties of the hair compositions of Examples 1 to 9 are superior to those of the hair compositions of Comparative Examples 1 and 2. . Further, when the hair compositions of Examples 5, 6 and 9 are used as evaluation criteria, the order of the hair dyeability is as follows: Example 1, Examples 2 to 5, Example 6, and Examples 7 to 7. 9 hair composition.

(Example 10, Comparative Examples 1 and 3)
Table 2 shows the evaluation results when the hair compositions of Example 10 and Comparative Examples 1 and 3 were used. The evaluation standard is the hair composition of Comparative Example 1.

The results shown in Table 2 show that the hair composition of Example 10 is superior to the hair compositions of Comparative Examples 1 and 3 in hair dyeability.

(Example 2, Examples 11 to 13, Comparative Example 1)
Table 3 shows the evaluation results when the hair compositions of Example 2, Examples 11 to 13, and Comparative Example 1 were used. The evaluation criteria are the hair compositions of Comparative Example 1 or Example 13.

From the results shown in Table 3, when the hair compositions of Examples 2 and 11 to 13 were used, the hair dyeability was superior to that of the hair composition of Comparative Example 1. I understand. In addition, it can be seen that the hair compositions of Examples 2, 11 and 12 are superior to the hair composition of Example 13 in hair dyeability.

(Examples 14 to 18, Comparative Example 1)
Table 4 shows the evaluation results when the hair compositions of Examples 14 to 18 and Comparative Example 1 were used. The evaluation criteria are the hair compositions of Comparative Example 1 or Example 18.

From the results shown in Table 4, it can be seen that when the hair compositions of Examples 14 to 18 are used, the hair dyeability is superior to when the hair composition of Comparative Example 1 is used. In addition, it can be seen that the hair compositions of Examples 14 to 17 are superior to the hair composition of Example 18 in hair dyeability.

(Example 14, Examples 19 to 21, Comparative Example 1)
Table 5 shows the evaluation results when the hair compositions of Example 14, Examples 19 to 21, and Comparative Example 1 were used. The evaluation criteria are the hair compositions of Comparative Example 1 or Example 21.

From the results shown in Table 5, when the hair compositions of Examples 14 and 19 to 21 were used, the hair dyeability was superior to that of the hair composition of Comparative Example 1. I understand. In addition, it can be seen that the hair composition of Example 14 is superior to the hair composition of Example 21 in hair dyeability.

(Example 22, Comparative Example 1)
Table 6 shows the evaluation results when the hair compositions of Example 22 and Comparative Example 1 were used. The evaluation standard is the hair composition of Comparative Example 1.

From the results shown in Table 6, it can be seen that when the hair composition of Example 22 is used, the hair dyeability is superior to when the hair composition of Comparative Example 1 is used.

(Examples 23-25, Comparative Example 1)
Table 7 shows the evaluation results when the hair compositions of Examples 23 to 25 and Comparative Example 1 were used. The standard for evaluation is the hair composition of Comparative Example 1 or Example 25.

The results shown in Table 7 show that the hair compositions of Examples 23 to 25 are superior in hair dyeability to the hair composition of Comparative Example 1. In addition, it can be seen that the hair compositions of Examples 23 and 24 are superior to the hair composition of Example 25 in hair dyeability.

(Comparative Example 1, Reference Example 1)
Table 8 shows the evaluation results when the hair compositions of Comparative Example 1 and Reference Example 1 were used. The evaluation standard is the hair composition of Reference Example 1.

From the results shown in Table 8, it can be seen that the hair dyeing treatment using the hair composition of Comparative Example 1 on the hair truss that was treated with copper gave the hair of Reference Example 1 to the hair truss that was not treated with copper. It can be seen that the hair dyeability is inferior to that of the hair dyeing treatment using the composition. In both Comparative Example 1 and Reference Example 1, only purified water was used as the hair composition, and the difference was in the presence or absence of copper treatment in the tresses that had undergone the oxidative hair dyeing treatment. As a result of the hair dyeing treatment using the hair composition of Reference Example 1, which was not treated with copper, the entire hair bundle was uniformly dyed dark blue. As a result of the hair dyeing treatment using the hair composition of Comparative Example 1 using the tress, some portions of the tress were dyed pale blue and some portions were dyed faint yellow, showing uneven discoloration. and the dyeability of the hair was lowered. In addition, in the oxidation hair dyeing treatment of Comparative Example 1, foaming occurred in the hair bundle during the treatment, so it is considered that the oxidation reaction of hydrogen peroxide occurred excessively (the oxidation hair dyeing treatment of Reference Example 1 did not foam). didn't wake up).

Formulation Examples 1 to 4 of the composition for hair according to the present embodiment are shown below.

(Prescription example 1)
Glycine 2% by mass
Taurine 3% by mass
1% by mass of tetrasodium hydroxyethanediphosphonate
Purified water 94% by mass

(Prescription example 2)
Glycine 5% by mass
1% by mass of tetrasodium hydroxyethanediphosphonate
Purified water 94% by mass

(Prescription example 3)
Glycine 3% by mass
Taurine 3% by mass
Purified water 94% by mass

(Prescription example 4)
Taurine 3% by mass
Tetrasodium hydroxyethanediphosphonate 3% by mass
Purified water 94% by mass

Claims (5)

A hair composition used for hair before hair dyeing with an oxidative hair dye,
glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, alanine or its salts, histidine or its salts, lysine or its salts, glutamic acid or its salts, arginine or its salts, phenylalanine or its salts, One or two selected from the group consisting of ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, ethylenediaminedisuccinic acid or its salts, and diethylenetriaminepentaacetic acid or its salts A composition for hair containing the above. Glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, alanine or its salts, histidine or its salts, lysine or its salts, glutamic acid or its salts, arginine or its salts, phenylalanine or its salts , ethylenediaminetetraacetic acid or salts thereof, hydroxyethanediphosphonic acid or salts thereof, ethylenediaminehydroxyethyltriacetic acid or salts thereof, ethylenediaminedisuccinic acid or salts thereof, and diethylenetriaminepentaacetic acid or salts thereof. 2. The composition for hair according to claim 1, wherein the amount of the seed or more is 1% by mass or more. Claim 1 or 2, wherein at least one or more selected from the group consisting of glycine or a salt thereof, taurine or a salt thereof, serine or a salt thereof, threonine or a salt thereof, and alanine or a salt thereof is blended. hair composition. one or more selected from the group consisting of glycine or its salts, taurine or its salts, serine or its salts, threonine or its salts, and alanine or its salts, and
One or more selected from the group consisting of ethylenediaminetetraacetic acid or its salts, hydroxyethanediphosphonic acid or its salts, ethylenediaminehydroxyethyltriacetic acid or its salts, and ethylenediaminedisuccinic acid or its salts is blended. Item 4. The composition for hair according to any one of Items 1 to 3. A hair dyeing method comprising applying the composition for hair according to any one of claims 1 to 4 to the hair and then dyeing the hair with an oxidative hair dye.