JP7213533B2 - hair dye composition - Google Patents

Description

The present invention relates to a semi-permanent hair dye composition that suppresses changes in color tone of dyed hair when hair is dyed continuously or simultaneously with a bleaching agent, or when an oxidative hair dye or bleaching agent is used after hair dyeing.

Hair dyes include oxidative hair dyes that are permanent hair dyes, color treatments and hair manicures that are semi-permanent hair dyes, and hair mascara that are temporary hair dyes.

Oxidative hair dyes generally consist of one component containing an oxidation dye and an alkaline agent and two components containing hydrogen peroxide. The hair dyeing mechanism of the oxidation hair dye is that the oxidation dye in the first agent is oxidized by the hydrogen peroxide in the second agent to develop a color. In addition, hydrogen peroxide in the second agent also has the function of oxidatively decomposing melanin in the hair to bleach the hair.

Oxidative hair dyes contain oxidative dyes that are likely to cause allergic contact dermatitis, and consumers who develop allergies or who want to avoid developing allergies want to avoid using them.

Hair manicures are mainly used to dye hair with acid dyes, and although the risk of developing allergies is low, it is difficult to keep the scalp from sticking to the skin, so it is difficult to use continuously. Absent.

Color treatments are mainly used to dye hair with basic dyes and HC dyes, and although they are not as dyeable as permanent hair dyes, they can gradually darken the dyed hair color with continued use. The dyed hair color can be maintained for days to weeks. In addition, since it is simple and easy to use on a daily basis, the interval between hair dyeing can be reasonably shortened, and the boundary between the dyed part and the new hair part can be made inconspicuous.

Color treatments and hair manicures only dye the hair by the adsorption and permeation of dyes into the hair, and do not decompose the melanin in the hair to decolorize the hair. Therefore, consumers who desire bright dyed hair need to bleach their hair with a bleaching agent during or after hair dyeing by color treatment or hair manicure.

However, in hair dyeing by color treatment or hair manicure, if a bleaching agent is used during or after hair dyeing, there is a problem that the color tone of dyed hair changes from brown to greenish brown, for example.

In particular, if you routinely dye your hair with color treatment for the purpose of dyeing gray hair, the next time you use an oxidizing hair dye, the color of the already dyed part will turn greenish brown, causing oxidation. There is also a problem that the color tone is different from that of the new hair dyed with the hair dye.

Several techniques have been proposed so far in order to suppress such a change in color tone of dyed hair.

For example, by containing a specific acid dye in a specific content or ratio, a hair dye composition that can be dyed in a color that looks beautiful naturally even under a fluorescent lamp or an incandescent lamp with poor color rendering properties ( Patent Document 1), Basic Blue 99, which has been standardly used as an important dye for hair dyeing, has a large tendency to discolor, so it is characterized by containing Basic Blue 75 instead of this dye. Techniques such as a hair dye composition (Patent Document 2) have been proposed. However, hair manicures containing acid dyes still have the problem of easily staining the hands and scalp, and color treatments using basic dyes are simply a method of avoiding the use of dyes that have a large impact. There are many cases where the color tone and degree of color development are insufficient, and the fundamental solution has not been reached.

It was known that the continuous use of semi-permanent hair dyes with oxidative hair dyes and bleaching agents changes the color tone of the dyed hair, but the countermeasure is to use dyes that have been empirically known to cause less discoloration. It remains a matter of choice. Until now, there has been no report on a technique for suppressing discoloration by using dyes that have complementary colors when discolored.

JP 2011-157290 A Patent No. 5981317

An object of the present invention is to suppress the change in tone of dyed hair that occurs when hair is dyed continuously or simultaneously with a bleaching agent or when an oxidative hair dye or bleaching agent is used after hair dyeing.

That is, the present invention provides component (A) one or more selected from the group consisting of basic orange 31, 3-nitro-p-hydroxyethylaminophenol and 4-amino-3-nitrophenol, and component ( B) A hair dye composition containing one or more dyes selected from the group consisting of Basic Brown 16, HC Blue 2, HC Blue 15 and HC Blue 16 in a weight ratio satisfying the following formula 1. It is something to do.
formula 1
{2.7×(A1)+4.5×(A2)+2.9×(A3)}/{2.0×(B1)+0.4×(B2)+8.6×(B3)+19×(B4 )} = 0.06 to 17
Here, (A1) is the content of basic orange 31 (% by weight), (A2) is the content of 3-nitro-p-hydroxyethylaminophenol (% by weight), and (A3) is 4-amino-3 - Nitrophenol content (% by weight), (B1) is the content (% by weight) of Basic Tea 16, (B2) is the content (% by weight) of HC Blue 2, (B3) is the content of HC Blue 15 (% by weight) Content (% by weight), (B4) represents the content (% by weight) of HC Blue 16.

The present invention also provides a hair dye composition in which the contents of component (A) and component (B) satisfy the following formula 2.
formula 2
{(A1) + (A2) + (A3) + (B1) + (B2) + (B3) + (B4)} ≥ 0.1

The present invention also provides (A) one or more selected from the group consisting of basic orange 31, 3-nitro-p-hydroxyethylaminophenol and 4-amino-3-nitrophenol, and (B) Dyeing hair continuously or simultaneously with a bleaching agent with a hair dye containing one or more dyes selected from the group consisting of Basic Brown 16, HC Blue 2, HC Blue 15 and HC Blue 16, To provide a method for suppressing change in color tone of dyed hair even under illumination with poor color rendering properties when an oxidizing hair dye or bleaching agent is used after hair dyeing.

The hair dye composition of the present invention can be used for dyeing hair with the hair dye composition of the present invention continuously or simultaneously with a bleaching agent, or after dyeing hair with the hair dye composition of the present invention, using an oxidative hair dye or bleaching agent. It suppresses the change in color tone of dyed hair that occurs when used. The change in color tone is small even under lighting with poor color rendering properties, and the hair color can be maintained in a natural color tone without being tinged with green.

When the total amount of dyes contained in the hair dye composition of the present invention is large, the effect of the present invention to suppress changes in color tone of dyed hair by using one hair dyeing and one oxidation hair dye or bleaching agent. can be expressed. In addition, when the total amount of dye is small, the dye accumulates in the hair by repeated use, and the dyeability increases, and in the subsequent use of oxidative hair dyes and bleaching agents, the color tone of the dyed hair is suppressed. effect can be expressed.

A white human hair bundle (left) dyed with the hair dye composition of Example 1 and a white human hair bundle (right) dyed with the hair dye composition of Example 1 and then bleached with a bleaching agent were evaluated for color rendering properties. Photo taken under good LED light.

A white human hair bundle (left) dyed with the hair dye composition of Example 1 and a white human hair bundle (right) dyed with the hair dye composition of Example 1 and then bleached with a bleaching agent were evaluated for color rendering properties. Photo taken under bad fluorescent lighting.

A bundle of white human hair (left) dyed with the hair dye composition of Comparative Example 1 and a bundle of gray human hair (right) dyed with the hair dye composition of Comparative Example 1 and then bleached with a bleaching agent were evaluated for color rendering properties. Photo taken under good LED light.

A bundle of white human hair (left) dyed with the hair dye composition of Comparative Example 1 and a bundle of gray human hair (right) dyed with the hair dye composition of Comparative Example 1 and then bleached with a bleaching agent were evaluated for color rendering properties. Photo taken under bad fluorescent lighting.

Basic orange 31 in the present invention is represented by INCI name (International Cosmetic Ingredient Dictionary and Handbook, 16th edition, Vol. 1, 2016): Basic Orange 31, compound name: 2-[(4-aminophenyl) azo]-1,3-dimethyl-1H-imidazolium chloride (CAS number: 97404-02-9).

3-nitro-p-hydroxyethylaminophenol in the present invention is represented by the INCI name: 3-Nitro-p-Hydroxyethylaminophenol, and the orange color represented by the compound name 4-[(2-hydroxyethyl)amino]-3-nitrophenol HC dye (CAS number: 65235-31-6).

The 4-amino-3-nitrophenol in the present invention is represented by INCI name: 4-Amino-3-nitrophenol, compound name: orange-based HC dye represented by 4-amino-3-nitrophenol (CAS number: 610-81-1).

Basic tea 16 in the present invention is represented by INCI name: Basic Brown 16, and compound name: 8-[(4-Aminophenyl)azo]-7-hydroxy-N,N,N-trimethyl-2-naphthalenaminiumchloride It is a brown-based basic dye (CAS number: 26381-41-9) represented.

HC Blue 2 in the present invention has the INCI name: HC Blue No. 2, compound name: 2,2′-{[4-(2-hydroxyethyl)amino-3-nitrophenyl]imino}bisethanol (CAS number: 33229-34-4 ).

HC Blue 15 in the present invention has the INCI name: HC Blue No. 15, with the compound name: 4-[(2,6-dichlorophenyl)(4-imino-3,5-dimethylcyclohexa-2,5-dien-1-ylidene)methyl]-2,6-xylidine phosphate It is a blue-based HC dye (CAS number: 74578-10-2) represented.

HC Blue 16 in the present invention has the INCI name: HC Blue No. 16, and is a blue HC dye (CAS number: 74918-21-1) represented by the compound name: 1,3-bis(2,4-diaminophenoxy)propane tetrahydrochloride.

Component (A) Basic Orange 31, 3-nitro-p-hydroxyethylaminophenol, 4-amino-3-nitrophenol in the present invention, Component (B) Basic Brown 16, HC Blue 2, HC Blue 15, HC Blue 16 may be one that is commonly used in hair dye compositions, and commercially available products can be used.

The hair dye composition of the present invention is composed of components (B) basic brown 16, HC blue 2, and HC blue 15, which tend to make the hair dyed with a greenish tinge because the redness tends to be weak under lighting with poor color rendering properties. and HC Blue 16, and a component (A) a base that can increase the redness under lighting with poor color rendering properties and suppress the greenishness of the dyed hair color. One or two or more selected from the group consisting of polyol 31, 3-nitro-p-hydroxyethylaminophenol and 4-amino-3-nitrophenol are contained in the ratio defined in formula 1 of claim 1.

For each dye, a human hair bundle dyed with a hair dye composition containing one type of dye and a human hair bundle dyed with a hair dye composition mixed with a bleaching agent were treated under LED light with good color rendering and color rendering Observed and compared under a poor fluorescent light. As a result, the human hair tresses dyed with the hair dye composition without using a bleaching agent exhibited almost no change in color tone due to differences in illumination. Human hair tresses dyed with a bleaching agent showed almost no change in color tone under LED light with good color rendering compared to the case where no bleaching agent was mixed. The change was big. Furthermore, under each light source, the color tone of the human hair bundle dyed by mixing the bleaching agent is measured with a color difference meter (two-dimensional colorimeter RC-300 manufactured by PaPaLab Co., Ltd.), and the L ^* a ^* b ^* color space is obtained. "L ^* value", "a ^* value", and "b ^* value" were obtained as values. As a result, the "a ^* value (LED)" under a fluorescent light with poor color rendering is smaller than the "a ^* value (LED)" under an LED light with good color rendering, and the dye that increases the greenness is Among many dyes, there was a dye that had a large "a ^* value (fluorescent light)" and increased redness.

Specifically, basic orange 31, 3-nitro-p-hydroxyethylaminophenol, 4-amino-3-nitrophenol, basic brown 16, HC blue 2, HC blue 15, and HC blue 16 dyes 1 A hair dye composition containing seeds was prepared. A bundle of human hair (100% white hair) dyed using these hair dye compositions, a first bleaching agent containing these hair dye compositions, 8% by weight of ammonia water, and 6% by weight of hydrogen peroxide water Human hair bundles (white hair 100%) dyed by mixing equal amounts of the bleaching agent 2nd agent containing The color tone of the resulting image was measured with a color difference meter to obtain the "L ^* value", "a ^* value" and "b ^* value". With any of the dyes, there was almost no difference between the "a ^* value (LED)" and the "a ^* value (fluorescent light)" of human hair tresses dyed without using a bleaching agent. On the other hand, in human hair bundles dyed using a bleaching agent, four types of basic brown 16, HC blue 2, HC blue 15, and HC blue 16 were compared with the "a ^* value (LED)" The a ^* value (fluorescent light)” decreased, and the three types of basic orange 31, 3-nitro-p-hydroxyethylaminophenol, and 4-amino-3-nitrophenol compared to the “a ^* value (LED)”. "a ^* value (fluorescent lamp)" increased. Here, "a ^* value (LED)" represents the "a ^* value" of the color tone photographed under an LED light with good color rendering, and "a ^* value (fluorescent light)" is under a fluorescent light with poor color rendering. Represents the "a ^* value" of the photographed color tone.

In addition, by dividing the amount of change in "a ^* value (LED)" and "a ^* value (fluorescent light)" when dyeing using a bleaching agent by the content of the dye in the hair dye composition, the dye The amount of change in the "a ^* value" per unit weight was determined for each. Hair dye compositions were prepared by combining various dyes with a negative change in the "a ^* value" and dyes with a positive change, and the dyed hair color was confirmed. The smaller the amount of change in the total "a ^* value", the smaller the change in color tone caused by the difference in illumination when hair was dyed using a bleaching agent.

That is, when a bleaching agent is used, the "a ^* value (LED)" is smaller than the "a ^* value (LED)", and the "a ^* value (LED)" is obtained when the bleaching agent is used. By using a hair dye composition that is toned by combining dyes that increase the “a ^* value (fluorescent light)” compared to the above, it is possible to suppress changes in color tone due to the light source even if a bleaching agent is used. I found

Furthermore, the amount of change in the "a ^* value" per unit weight determined for each dye is used as a coefficient to determine the amount of change in the "a ^* value" of each dye for the hair dye composition, which is a dye mixture, and the amount of change is small. It was found that by mixing the dyes in such a manner that the color tone change due to the difference in lighting that occurs when hair is dyed using a bleaching agent can be reduced.

That is, the amount of change in the "a ^* value" per unit weight obtained for each dye is used as a coefficient, and the amount of change in the "a ^* value" for the hair dye composition, which is a dye mixture, is a negative value. When the amount of change in the "a ^* value" becomes a positive value and the amount of change is totaled, the smaller the difference between the amount of negative change and the amount of positive change, the more the bleaching agent is used to dye the hair. It was possible to reduce the color tone change due to the difference in lighting that occurs when

On the other hand, the amount of change in the "a ^* value" per unit weight obtained for each dye is used as a coefficient, and the amount of change in the "a ^* value" for the hair dye composition, which is a dye mixture, is a negative value. When the amount of change in the "a ^* value" becomes a positive value and the amount of change is totaled, even if the difference between the amount of negative change and the amount of positive change is large, the change with the smaller absolute value is The effect of the present invention was confirmed when it was visually identifiable.

In general, the color difference dE=20 is called a class 6 color difference, which has a color difference at the color name level and is a color difference that can be identified as a different color. Similarly, a color difference dE of 1.2 is called a color difference of class 2 (practical color difference a), and is a color difference that makes it possible to recognize a color difference. Even if only the change in the "a ^* value" is considered, a change of 20 indicates that different colors can be identified, and a change of 1.2 indicates that a difference in color can be recognized.

That is, the ratio of the amount of negative change in the "a ^* value" to the amount of positive change in the "a ^* value" is within the range of 1.2/20 to 20/1.2, that is, from 0.06 to If it is in the range of 17, it suppresses the color tone change of the dyed hair color that occurs when hair is dyed continuously or simultaneously with a bleaching agent, or when an oxidative hair dye or a bleaching agent is used after hair dyeing, which is the problem of the present invention. can do.

Depending on the total amount of dye, the dyeing property may be small in one use, but with repeated use, the dye accumulates and the dyeing property increases, and in the subsequent use of oxidative hair dyes and bleaching agents, the dyed hair color Since the effect of the present invention that suppresses the color tone change of the present invention can be exhibited, the effect of the present invention can be exhibited even when the total amount of dye contained in the hair dye composition of the present invention is small. If the total amount of dyes contained in the hair material composition is small, when an oxidative hair dye or bleaching agent is used in a state in which the dye is not sufficiently accumulated in the hair, the dyed hair color may not be obtained under lighting with poor color rendering. Since the problem of being tinged with green is less likely to occur, it is difficult to perceive the effects of the present invention. Therefore, the total content of components (A) and (B) is preferably 0.1% by weight or more.

Furthermore, the hair dye composition of the present invention contains other components such as oils and fats, waxes, hydrocarbons, polyhydric alcohols, amides, silicones, cationic surfactants, amphoteric surfactants, Nonionic surfactants, cationic polymers, amphoteric polymers, nonionic polymers, amino acids, vitamins, chelating agents, preservatives, stabilizers, antioxidants, plant extracts, pigments, fragrances, A pigment, an ultraviolet absorber, etc. can be contained.

The dosage form of the hair dye composition of the present invention is not particularly limited, and any dosage form such as emulsion, cream, paste, powder, liquid, etc. can be employed.

The hair dye composition of the present invention can exert its effect as a single agent, but the method of use is not limited to single use. The hair dye composition of the present invention is mixed with the second agent at the time of use and then applied to the hair, or the hair dye composition of the present invention is applied to the hair before the second agent is applied, or the second agent is applied to the hair before the present invention. The effect of the present invention can be exhibited even in the method of applying the hair dye composition.

EXAMPLES The present invention will be described in detail below with reference to Examples, but the technical scope of the present invention is not limited to these. In addition, unless otherwise specified, the contents are expressed in % by weight.

Cream-type hair dye compositions having compositions listed in Tables 1 and 2 were prepared by a conventional method. (Examples 1 to 13, Comparative Examples 1 to 8)

Using the hair dye compositions shown in Table 1, human hair tresses were dyed by the following method.

(Hair dyeing with color treatment)
1 g of the cream-type hair dye compositions of Examples 1 to 13 and Comparative Examples 1 to 9 were applied to 100% white human hair tresses (manufactured by Beaulux, length 10 cm, weight 1 g), and heated at 40° C. for 10 minutes. After leaving it for 1 minute, it was washed with water to thoroughly wash away the hair dye composition, and dried sufficiently.

(Decolorization with a bleaching agent)
Bleach obtained by mixing equal amounts of a bleaching agent 1st agent containing 8% by weight of ammonia water and a bleaching agent 2nd agent containing 6% by weight of hydrogen peroxide solution to the dyed human hair tress described above. 1 g of the hair dye mixture was applied, left at 40° C. for 10 minutes, washed with water to thoroughly wash off the hair dye composition, and dried sufficiently.

Test 1 Evaluation of dyeability (test method)
Human hair bundles dyed once with the hair dye compositions shown in Tables 1 and 2 were visually observed by a panel of 10 experts, and evaluated in two stages: high and low dyeability. Shown on the basis of the following criteria.

(Evaluation criteria)
A: 9 or 10 panelists evaluated that the dyeability was high.
◯: 6 to 8 panelists evaluated that the dyeability was high.
△: 3 to 5 people evaluated that the dyeability was high.
×: Not more than 2 persons evaluated that the dyeability was high.

Test 4 Color rendering evaluation (test method)
Using the hair dye compositions shown in Tables 1 and 2, the hair was repeatedly dyed once or three times, and then bleached with a bleaching agent. Visual observation was carried out by 10 expert panelists under light, and the degree of change in color tone was evaluated in two stages, ie, large and small, and shown according to the following criteria.

(Evaluation criteria)
A: 9 or 10 panelists evaluated that the change in color tone due to the light source was small.
○: 6 to 8 panelists evaluated that the change in color tone due to the light source was small.
Δ: 3 to 5 panelists evaluated that the change in color tone due to the light source was small.
x: Not more than 2 persons evaluated that the change in color tone due to the light source was small.

As shown in Examples 1 to 13 in Table 1, hair dyed with a hair dye composition containing one or more selected from component (A) and one or more selected from component (B) has a color rendering Good results were obtained in the evaluation of the properties. On the other hand, as shown in Comparative Examples 1 to 9 in Table 2, when hair is dyed with a hair dye composition that does not contain component (A), the difference in content between component (A) and component (B) is When it was too large, good results were not obtained in the color rendering evaluation.

As representative examples, the evaluation results of color rendering properties using the hair dye compositions of Example 1 and Comparative Example 1 are shown in FIGS. As shown in FIGS. 1 and 2, when the hair was dyed with the hair dye composition of Example 1 and then bleached with a bleaching agent, the results were obtained under LED light with good color rendering (FIG. 1, right) and under fluorescent light with poor color rendering. The change in color tone was small in the comparison below (Fig. 2, right). On the other hand, as shown in FIGS. 3 and 4, when the hair is dyed with the hair dye composition of Comparative Example 1 and then bleached with a bleaching agent, the color rendering is lower than that under an LED light with good color rendering (FIG. 3, right). In the comparison under the poor fluorescent light (Fig. 4, right), the change in color tone was large.

Further, as shown in Examples 4 to 6 in Table 1 and Comparative Example 2 in Table 2, even when the content of component (A) is less than the content of component (B), evaluation of color rendering properties Good results were obtained in

In addition, as shown in Examples 10 and 11 in Table 1 and Comparative Examples 6 and 7 in Table 2, when the total amount of component (A) and component (B) is small, the dyeability in one hair dyeing is low, the change in color tone in the color rendering evaluation was inconspicuous, and it was difficult to recognize the effect of containing the component (A) and the component (B), but the color rendering evaluation after repeated hair dyeing , good results were obtained in Examples 10 and 11.

Although other evaluations are not shown, not only the hair dyeing with the hair dye composition of the present invention and the continuous bleaching treatment with the bleaching agent, but also the oxidation dyeing at the same time or continuously with the hair dye composition of the present invention. The hair dye compositions shown in Examples in Table 1 also gave better results than the hair dye compositions shown in Comparative Examples in Table 2 when the hair was dyed with a hair agent.

Further, although other examples of the invention are not shown, a powdery hair dye composition and a liquid hair dye composition having the dye composition described in components 1 to 7 in Table 1 were prepared and evaluated in the same manner. Also, when hair is dyed continuously or simultaneously with bleaching, or when bleaching or dyeing with an oxidative hair dye is performed after hair dyeing, it is excellent in the effect of suppressing the change in color tone of the dyed hair.

According to the present invention, it is possible to provide a hair dye that can be dyed continuously or simultaneously with a bleaching agent, or that suppresses changes in the color tone of the dyed hair when an oxidative hair dye or a bleaching agent is used after hair dyeing. When the dyed part and the nascent part are dyed at the same time, the user can freely select between color treatment, hair dyeing with an oxidative hair dye, and bleaching agent without worrying about the change in color tone of the dyed part.

Claims (2)

Component (A) basic orange 31, one or more selected from the group consisting of 3-nitro-p-hydroxyethylaminophenol and 4-amino-3-nitrophenol, component (B) basic tea 16, Contains one or more dyes selected from the group consisting of HC Blue 2, HC Blue 15 and HC Blue 16, and the contents of component (A) and component (B) satisfy the following formulas 1 and 2 A hair dye composition containing no dyes other than components (A) and (B) .
formula 1
{2.7×(A1)+4.5×(A2)+2.9×(A3)}/{2.0×(B1)+0.4×(B2)+8.6×(B3)+19×(B4 )} = 0.27 to 5.62
formula 2
{(A1) + (A2) + (A3) + (B1) + (B2) + (B3) + (B4)} = 1.1 to 1.4
Here, (A1) is the content of basic orange 31 (% by weight), (A2) is the content of 3-nitro-p-hydroxyethylaminophenol (% by weight), and (A3) is 4-amino-3 - Nitrophenol content (% by weight), (B1) is the content (% by weight) of Basic Tea 16, (B2) is the content (% by weight) of HC Blue 2, (B3) is the content of HC Blue 15 (% by weight) Content (% by weight), (B4) represents the content (% by weight) of HC Blue 16. By using the hair dye composition according to claim 1, hair is dyed continuously or simultaneously with a bleaching agent, or even if an oxidative hair dyeing agent or a bleaching agent is used after hair dyeing, it is possible to suppress the change in the color tone of the dyed hair. possible hair dyeing methods.

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