JP2002104942A - Acidic hair dye composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an acidic dye composition that is stable despite being strongly acidic with rich fluidity and excellent availability without dye color staining and migrating to the skin and clothes after the hair is dyed in no need of washing off the dye and the white hair is made inconspicuous with only the application of the dye composition and the white hair can be dyed in a balanced color by four or five-type hair-dyeing. SOLUTION: The objective hair-dyeing acidic dye comprises 0.01-1% of one or two or more kinds of acidic dyes, 0.1-10% of an acid as a pH-adjusting agent, 1-20% of lower alcohol as a solvent and 0.01-5% of a polymeric compound as a thickener.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an acidic hair dye which has excellent dyeing properties and has no color transfer to skin, clothes and the like.

[0002]

2. Description of the Related Art Although there have been many proposals regarding acidic hair dyes, those having a low pigment concentration and a low concentration of a penetrant or an acid are mainly used for hairdressing and the like, and are used for skin and clothing. Although the color transfer was small, the hair dyeing power for hiding the gray hair and making the gray hair inconspicuous was extremely poor, and was ineffective as a hair dye. Conversely, pigments with high pigment concentrations and high penetrants and acid concentrations are used as hair dyes and have a high degree of contamination on the skin, causing severe color transfer to the skin and clothing even after use. Only products that are performed as a special treatment or that are used in general households must be used carefully so as not to contaminate the skin and clothes, and must always wash away excess hair dye after use.

[0003]

DISCLOSURE OF THE INVENTION The present invention is stable even in a strongly acidic region (pH 1.5 to 4.0), is rich in fluidity, is excellent in use feeling, and has good skin and skin after use. Hidden white hair inconspicuously in one use with thickening means that does not need to be washed off without color transfer to clothes, etc., and inconspicuously dyes gray hair in four to five uses It is an object of the present invention to provide an acidic hair dye composition which can be used.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to solve this problem, and as a result, as an acidic hair dye, essential components such as "colorant", "acid", "aromatic alcohol", "aromatic alcohol", By blending "lower alcohol", "thickener", and "water" in a well-balanced manner, it is possible to hide gray hair inconspicuously in one use and dye it inconspicuously in 4-5 uses. A highly effective acidic hair dye composition that does not transfer color to the skin or clothes and does not need to be washed away.

The acidic hair dye composition of the present invention comprises 0.01 to 1% of one or more acid dyes, 0.1 to 10% of an acid as a pH adjuster, and an aromatic as a penetrant. 1 to 20% of alcohol, 1 to lower alcohol as solvent
20%, 0.01 to 5% of a polymer compound as a thickener
Characterized by being blended. The acidic hair dye composition of the present invention contains, in addition to the main components described above, if necessary, auxiliary agents usually used in this kind of field, such as an ultraviolet absorber, an antioxidant, and a stabilizer. Consisting of

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION As the acid dye in the present invention, legal dyes usually used for oxidative hair dyes and acid hair dyes can be used. Preferably a tar dye,
For example, Red No. 2, Red No. 102, Red No. 106, Red No. 213, Red No. 215, Red No. 227, Red No. 401
No., Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 203
No. Yellow No. 205, Green No. 3, Green No. 204, Green No. 20
No. 5, Blue No. 1, Blue No. 203, Blue No. 403, Black No. 4
No. 01, purple 401, orange 205, brown 201 and the like. These dyes can be used alone or in combination of two or more. The acid dye is used in an amount of 0.01 to 1% by weight, preferably 0.05 to 0.
It may be added in the range of 5% by weight. If it is 0.01% or less, the desired color is not reached unless the number of hair dyeings is repeated 10 times or more, and if it is 1% or more, it becomes difficult to dye the hair in a desired color.

As the acid as the pH adjuster, any of an inorganic acid and an organic acid can be used, but an organic acid is preferably used. For example, citric acid, succinic acid, tartaric acid, lactic acid,
Organic acids such as malic acid, fumaric acid, maleic acid, and glycolic acid; and inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and nitric acid. In addition, for the purpose of providing a buffer capacity or the like, these acids can be used in combination with a sodium salt, a potassium salt or an ammonium salt of these acids. The mixing amount of these acids is such that the hair dyeing solution has a pH of 1.5 to 4.
0, preferably selected and blended so as to have a strong acidity of about pH 1.5 to 3.5.

[0008] Aromatic alcohols as penetrants are used to promote the penetration of the dye into the hair and to impart smoothness, a moist feeling and a suitable moisturizing property to the hair after dyeing the hair. For example, benzyl alcohol, phenylethanol and the like can be used. Preferably, it is benzyl alcohol.

As the lower alcohol as a solvent, those commonly used for hair styling and the like can be blended. A linear or branched alcohol having 1 to 4 carbon atoms can be used. For example, methanol, ethanol, propanol, isopropanol, butanol, ethylene glycol, 1,3-
Butylene glycol and the like can be mentioned, but ethanol is preferably used. The amount of the lower alcohol varies depending on the other components, but is 1 to 20 with respect to the total amount of the hair dye.
Used in the range of%. When the content is less than 1%, the function as a solvent is small, so that the solution becomes turbid or separated, and when it is more than 20%, the workability at the time of dyeing is reduced.

In the hair dye of the present invention, a thickener is used in order to prevent the hair dye solution from unnecessarily dripping during use and to improve the handleability. The polymer compound as a thickener is
Any of natural or synthetic polymer compounds can be used.
For example, gum arabic, guar gum, carrageenan, sodium alginate, xanthan gum, methylcellulose, C
Examples include natural polymers such as MC and cationized starch, synthetic polymers such as poly (meth) acrylic acid, poly (meth) acrylate, and polyvinyl alcohol, and higher fatty acid esters such as polyethylene glycol higher fatty acid ester. Preferably, xanthan gum or the like is used.

[0011] The hair dye composition of the present invention may, if necessary,
Wetting agents, anti-dandruff agents, antioxidants, ultraviolet absorbers, fragrances and the like used in this type of field can be incorporated. The hair coloring material of the present invention can obtain a moist and deep color by dyeing hair three to five times or more at intervals without obtaining hair of a desired color by one hair dyeing. It is the purpose. Therefore, even if the number of times of hair dyeing is repeated, the hair is not damaged, and the health is not adversely affected.

[0012]

Hereinafter, the present invention will be described with reference to Examples.
The present invention is not limited to these examples.

Formulation Examples Xanthan gum as a thickener, glycolic acid as a pH adjuster, benzyl alcohol as an aromatic alcohol,
Ethanol was used as the lower alcohol, and a mixed acid dye obtained by mixing each dye shown in Table 1 below was used as the acid dye. Each of the above components was blended at the ratios shown in Tables 2 and 3, and purified water was added to make the total amount 100. % Indicates% by weight. The hair dyeing properties of the obtained hair dyes were tested in Examples 1 and 2.

Example 1 Hair dyeability and handleability of Example 1 and Comparative Examples 1 to 3 having the compositions shown in Table 2 were examined. As the mixed acidic dye, a black dye shown in Table 1 was used. Note that Comparative Example 1 is an example of a composition with a large amount of xanthan gum, Comparative Example 2 is an example of a case with a large amount of benzyl alcohol, and Comparative Example 3 is an example of a case with a large amount of ethanol. In Comparative Examples 2 and 3, the compoundability of the composition itself was poor, and the hair dyeability was also poor. Hereinafter, the hair dyeing properties of Example 1 and Comparative Examples 1 to 3 will be described.

1. Hair dye * 1: Dries 10 minutes after application and keeps hands clean even when rubbed.
The white hair was also uniformly dyed black, had no stickiness, had a smooth feel, and was extremely good. * 2: Viscosity was high, application was difficult, and gray hair turned black, but did not dry even after 30 minutes, and recontamination was observed. * 3: The liquid is separated into two layers, and is applied to gray hair after shaking, but the liquid easily flows and is inconvenient to use, and the gray hair turns black after application, but remains wet after 30 minutes have passed. Stain occurred in the state where it was put. * 4: After application, the gray hair became black and became inconspicuous.
After 30 minutes, the dye was sticky and the dye was re-adhered, and after drying, the dye was re-adhered.

2. Dyeing properties after shampooing 1) Even after shampooing with a commercially available shampoo, there was no discoloration, and the gray hair was uniformly dyed black. 2) After shampooing, partial discoloration due to hair washing was observed, and a part of the white hair turned light black, but the white hair was conspicuous as a whole. 3) After shampooing, when the white hair was observed, it was partially blackened, but some non-stained parts were also observed, and the gray hair was conspicuous. 4) After shampooing, observation of the gray hair portion showed that the hair was almost completely discolored due to the washing of the hair, the gray hair was conspicuous, and no dyeing property was observed.

Applicability: With the test subject being a male who has gray hair in general, the liquid of Example 1 is taken in a comb and applied entirely to the left head. The liquid of Comparative Example 1 is applied to the right head in substantially the same amount. As a result, in Example 1, the whole liquid was easily spread, and the gray hair was able to be concealed generally uniformly. However, in the case of Comparative Example 1, it was difficult to uniformly spread the whole liquid, and it was easy to conceal the whole white hair. Did not. Reattachability: Immediately after the treatment, the palms of the hands were stained by the dye when the applied parts of Example 1 and Comparative Example 1 were applied to the palms of the hands. It was minor. After lapse of 10 minutes from the application, when both application parts were rubbed with the palm of the hand, the dye was re-attached to the palm of the hand considerably in Comparative Example 1 but quite dry in Example 1. No stain was found on the palm of the hand, and no stain was found on the white cloth even if it was strongly rubbed with a white cloth.

Hair dyeability: After washing the head with a commercially available shampoo and drying the hair, the state of hair dyeing on both sides of the head was observed. Although it was observed as a condition, the presence of the gray hair in the used part of Example 1 was hardly recognized, and the gray hair was in a dyed state.
The hair was washed once and three times a day, but the color of the hair dyed part was not discolored. The gray hair part using Example 1 was completely inconspicuous in comparison with the part using Comparative Example 1.

The acid hair dye according to the present invention dries in about 10 minutes after the treatment, does not stain the palms and clothes by the dye, can maintain the hair styling state as it is, and can wash the hair. The later gray hair is also dyed, and a sufficient hair dyeing effect can be obtained even after repeated hair washing, and the inconvenience of leaving it for 30 to 40 minutes after the treatment usually performed when using an acidic hair dye and then washing it Without applying the product of the present invention,
A hair dyeing effect can be obtained simply by adjusting the hairstyle in that state.

Example 2 Dyeability was tested for Example 2 and Comparative Example 4 having the compositions shown in Table 3, and Comparative Examples 5 and 6 were also tested.
As the mixed acidic pigment, the brown pigments shown in Table 1 were used. Comparative Example 4 shows an example in which the amount of water is large. Comparative Example 5 is an example in which the amount of benzyl alcohol is large and the amount of ethanol is small, and Comparative Example 6 is an example in which the amount of ethanol is small and the amount of water is large. Hairiness was not good.

1. * 5: Dries 10 minutes after application and keeps hands clean even when rubbed.
The white hair was also uniformly dyed brownish brown, had no sticky feeling, had a smooth feel, and was unnoticeable, and was extremely good. * 6: After application, the white hair turned brown and the gray hair was inconspicuous, but did not dry after 30 minutes or more, and the dye was re-adhered, and the dye was re-adhered even after drying. * 7: The liquid was separated into two layers, and was applied after being shaken. However, in order to make the gray hair inconspicuous, it was shaken many times, and the number of times of application increased, which was inconvenient. Further, even after 30 minutes or more, soiling occurred in a wet state. * 8: The liquid was in a separated state, and after application, the white hair was brown and inconspicuous, but was sticky even after 30 minutes had passed, and the dye was re-adhered, and the dye was re-adhered after drying. 2. Dyeability after washing 5) Even after washing with a commercial shampoo, there was no discoloration, and the gray hair was uniformly dyed brown. 6) After shampooing, the white hair was dyed light brown, but the white hair was conspicuous as a whole due to discoloration caused by washing the hair. 7) After shampooing, the white hair was observed to be partially dyed brown and uneven dyeing was observed. 8) Observation of the gray hair after shampooing showed that the hair was almost completely discolored due to the washing of the hair, the gray hair was conspicuous, and no dyeing property was observed.

Applicability: In the same manner as in Example 1, for a 50-year-old female with gray hair, Example 2 and Comparative Example 4 were applied to the left and right sides, respectively. As a result, in Example 1, the whole liquid was easily spread, and the gray hair was able to be concealed uniformly uniformly. However, in Comparative Example 4, benzyl alcohol was separated, and it was difficult to spread the whole liquid uniformly. I couldn't hide all my gray hair. Reattachability: Immediately after the treatment, when the palms of the hands were applied to the application portions of Example 1 and Comparative Example 4, both hands were stained with the dye. It was minor. After 10 minutes from the application, when both the applied portions were rubbed with the palm of the hand, the comparative example had a viscous feeling and the dye re-attached considerably to the palm of the hand, but in the example, the hand was completely dried. There was no stain on the palm of the palm, and no stain on the white cloth was observed even if it was strongly rubbed with a white cloth.

Hair dyeability: After washing the head with a commercially available shampoo and drying the hair, the hair dyeing state on both sides of the head was observed. Although there was no white hair as a whole, the white hair was conspicuous and observed as a gray hair state, but almost no gray hair was recognized in the used part of Example 1, and the gray hair was dyed.

Similarly to the result of Example 1, the acidic hair dye of the present invention of Example 2 dries in a short time after the treatment, does not contaminate palms and clothes by the dye, and maintains the hair condition as it is. In addition, the white hair after the hair was washed was also dyed, and a sufficient hair dyeing effect was obtained even if the hair was washed repeatedly. Re-dyeing property: For a woman whose hair was dyed as described above, hair dyeing was repeated every three weeks. As a result, uniform dyeing was obtained in which the previous dyed part and the later dyed part were indistinguishable,
In addition, a deep color was obtained by repeating the operation, and the hair condition was smooth and had a smooth feel with no rough feeling (hardening) and no damage to the hair when used repeatedly.

From the results of the above Examples and Comparative Examples, the hair dye composition of the present invention has a composition ratio of benzyl alcohol to ethanol of 1: 0.25 to 4.0, and a mixture of benzyl alcohol / ethanol and water. Composition ratio of 1: 2.3 to 4
In the range of 1.0, it was recognized that there was no separation of benzyl alcohol, and the adsorptivity of the dye and the feeling during use during coating were good. From these results, the ratio of each component of the present invention can be described collectively as follows. Composition range of the present invention Preferred range Acid dye 0.01-1% 0.05-0.5 Acid 0.1-10% 1.0-5.0 Aromatic alcohol 1.0-20% 5.0-15 0.0 Lower alcohol 1.0 to 20% 10.0 to 15.0 Polymer compound 0.01 to 5% 0.3 to 1.0 Purified water 44.0 to 97.88 59.5 to 74.45

[0026]

The acidic hair dye composition of the present invention is easy to use because it is a one-part composition, and has an appropriate viscosity and good drying properties. Has many advantages such as not. In addition, the composition of the hair dye of the present invention is applicable not only to the coloring of black or brown color but also to any color pigment, so that it can be used not only for dyeing gray hair of the elderly, but also for dyeing the hair according to the fashion of young people. Can also be applied.

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Claims (3)

[Claims] 1. A method according to claim 1, wherein one or more of the acid dyes is 0.0
1 to 1%, 0.1 to 10% of acid as pH adjuster, 1 to 20% of aromatic alcohol as penetrant, 1 to 20% of lower alcohol as solvent, polymer as thickener An acidic hair dye composition comprising 0.01 to 5% of a compound. 2. An acid dye of 0.05 to 0.5%, an acid as a pH adjuster of 1 to 5%, and an aromatic alcohol of 5 to 1%.
The acidic hair dye composition according to claim 1, comprising 5% of a lower alcohol, 10 to 15% of a lower alcohol, and 0.3 to 1% of a polymer compound as a thickener. 3. The acid dye according to claim 1, wherein the acid dye is a tar dye, the acid as a pH adjuster is glycolic acid, the aromatic alcohol is benzyl alcohol, the lower alcohol is ethanol, and the polymer compound is xanthan gum. Hair composition.