JP2002087944A - Hair dye composition - Google Patents

Abstract

(57) Abstract: The melting point of the solid part of a mixture of 3 parts by weight of a lipid model composition for stratum corneum cells (A) and 25 parts by weight of a hair dye base excluding dye (B), The difference between the melting point of the solid part of the mixture of 3 parts by weight of the interlipid model composition (A) and 25 parts by weight of distilled water is within 10 ° C., and red No. 106 is added to the hair dye base (B) by 0.1%. The color difference value of the goat hair when dyed at 30 ° C. for 10 minutes at a bath ratio of 1 (goat hair): 50 (hair dye) using a hair dye blended to give a weight% of 70% or more. A hair dye composition containing a hair base (B). EFFECTS By using the hair dye composition of the present invention, hair can be satisfactorily dyed without staining the scalp during the hair dyeing operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair dye composition capable of dyeing hair without contaminating the scalp during a hair dyeing operation.

[0002]

2. Description of the Related Art When a hair dye containing a direct dye is used, there is a problem that not only the hair but also the scalp is colored during the hair dyeing operation. In the case of a hair dye containing benzyl alcohol as an agent for promoting the penetration of the dye into the hair, coloring of the scalp has been a serious problem.

[0003] Conventional techniques for preventing this include a technique for preventing dripping by using a polymer, a technique for preventing dripping using an aerosol agent system, a technique for forming a protective film such as oil on the scalp, and a technique for physically peeling the scalp. There is a technique for improving the selectivity of a dye to hair by utilizing an antigen-antibody reaction.

[0004]

However, the method based on the prevention of dripping or the formation of a protective film has no effect when a hair dye is erroneously attached to the scalp, and is not sufficient as a technique for preventing scalp coloring. Therefore, a hair dye that does not contaminate the skin even if the hair dye adheres to the scalp by mistake is desired.

[0005]

The present inventors have studied the effects of dyes on hair and skin and found that the dye-penetrating medium is different between hair and skin. That is, the dye penetrating medium was the protein layer of the cuticle part in the hair, and the lipid layer between the stratum corneum cells in the skin. Focusing on this difference, a model composition similar to the constituents of the stratum corneum was prepared, and the relationship between the interaction of this composition with the hair dye base and the dye contamination of the skin was examined. The use of a hair dye base that does not lower the melting point of the composition when mixed with this composition can prevent dye staining of the skin. Has been found to have good dyeing properties.

That is, the present invention provides 27.5% by weight of N- (3-hexadecyloxy-2-hydroxypropyl) -N- (2-hydroxyethyl) hexadecanamide,
Corneal cells obtained by stirring 5.0% by weight of cholesteryl isostearate, 10.0% by weight of stearic acid, 7.5% by weight of cholesterol and 50.0% by weight of distilled water for 30 minutes at 80 ° C. and then naturally cooling to room temperature. Melting point of solid part of mixture of 3 parts by weight of interlipidal model composition (A) and 25 parts by weight of hair dye base (B) excluding dye, 3 parts by weight of lipid model composition between stratum corneum (A) and distillation The difference from the melting point of the solid part of the mixture of 25 parts by weight of water is within 10 ° C. (hereinafter sometimes referred to as “property (1)”), and red hair No. 106 is added to the hair dye base (B). The color difference value of goat hair when dyed at 30 ° C. for 10 minutes at a bath ratio of 1 (goat hair): 50 (hair dye) using a hair dye blended so as to be 1% by weight is 70 or more. (Hereinafter sometimes referred to as “property (2)”) containing a hair dye base (B). There is provided a hair dye composition.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The hair dye base (B) used in the hair dye composition of the present invention contains components other than the dye in the hair dye composition, and has the properties (1) and ( 2). The lipid model composition (A) used for measuring the melting point of this characteristic (1) is N- (3-hexadecyloxy-2-hydroxypropyl) -N-
27.5% by weight of (2-hydroxyethyl) hexadecaneamide (Softcare Ceramide, manufactured by Kao), cholesteryl isostearate (Exepar IS-CE, manufactured by Kao)
5.0% by weight, 10.0% by weight of stearic acid (Lunac S-98, manufactured by Kao), 7.5% by weight of cholesterol and 50.0% by weight of distilled water were stirred at 80 ° C. for 30 minutes and then naturally cooled to room temperature. It is a composition obtained. Here, room temperature
20-30 ° C. The characteristic (1) is the melting point of the solid part of a mixture of 3 parts by weight of the composition (A) and 25 parts by weight of the hair dye base (B), and the melting point of 3 parts by weight of the composition (A) and 25 parts by weight of distilled water. The melting point of the solid part of the mixture was measured, and the difference was within 10 ° C. This melting point is lower when the hair dye base (B) is used than when water is used. Hair dyes using the hair dye base (B) having a difference of more than 10 ° C. tend to be contaminated when the dye adheres to the skin. On the other hand, the hair dye using the hair dye base (B) having a difference of 10 ° C. or less does not remain even if the dye adheres to the skin and does not contaminate it. This difference is 9 ° C
Is preferably within. The solid part of the mixture of 3 parts by weight of the composition (A) and 25 parts by weight of distilled water has a melting point of 50 to 60 ° C.

Preferably, the melting point is measured by measuring the endothermic temperature in the process of raising the temperature using a DSC (differential scanning calorimeter). Here, the endothermic temperature is defined as the peak temperature of the endothermic peak. More specifically, 3 mg of the composition (A) and 25 mg of a hair dye base or distilled water were sealed in a DSC cell, heated at 80 ° C. for 10 minutes, cooled to −5 ° C. for 20 minutes, and then cooled at 5 ° C./min.
And the peak temperature of the endothermic peak derived from the melting point, which appears at 10 to 100 ° C., may be measured by DSC.

The characteristic (2) is that the hair dye base (B) has a red color 1
Color difference value of goat hair when dyed at 30 ° C. for 10 minutes at a bath ratio of 1 (goat hair): 50 (hair dye) using a hair dye prepared by blending No. 06 with 0.1% by weight. Is 70 or more. When the color difference value is less than 70, the dyeing property for hair is not sufficient, and when the color difference value is 70 or more, sufficient dyeing property for hair can be secured. The color difference value is preferably 72 or more, particularly preferably 80 or more.

More specifically, a hair dye 5 prepared by blending Red No. 106 with the hair dye base (B) in an amount of 0.1% by weight.
1 part by weight of goat hair is immersed in 0 part by weight,
Process for a minute. Then, rinse with hot water of 38 ° C for 30 seconds,
Shampoo for 15 seconds, rinse with hot water at 38 ° C for 15 seconds,
After shampooing for 2 seconds, rinsing with 38 ° C. hot water for 15 seconds, and then naturally drying for 2 hours. Thereafter, the color difference value of the goat hair is measured with a color difference meter.

Hair dye base (excluding dye) used in the present invention
The composition of (B) is not limited as long as it has the properties (1) and (2), but a hair dye base designed to use a direct dye, preferably an acid dye, is more preferable. In particular, an aqueous hair dye base having a pH of 2 to 4.5 is particularly preferred. The hair dye base (B) preferably contains an acid for adjusting the pH to 2 to 4.5 and, if necessary, a base. Examples of the acid include lactic acid, citric acid, glycolic acid, succinic acid, tartaric acid, fumaric acid, malic acid, levulinic acid, butyric acid, valeric acid, oxalic acid, maleic acid, organic acids such as mandelic acid, phosphoric acid, Inorganic acids such as sulfuric acid, nitric acid and hydrochloric acid; Also, as a base, sodium hydroxide,
Examples include potassium hydroxide, ammonia and alkanolamines such as monoethanolamine and triethanolamine.

It is preferable that the hair dye base (B) contains γ-caprolactone from the viewpoint of the effect of preventing skin contamination and the hair dyeing property. The preferred content of γ-caprolactone is 0.1 to 20% by weight, more preferably 1 to 10% by weight.

The hair dye base (B) contains, in addition to the above components, 0.1 to 20% by weight, particularly 0.5 to 10% by weight of a water-soluble polymer such as hydroxyethyl cellulose, xanthan gum, carboxyvinyl polymer, carrageenan and the like. It is preferable to make the hair dye operable. Alcohols having 3 or less carbon atoms, such as ethanol and isopropanol;
Propylene glycol, 1,3-butylene glycol,
Solvents such as polyhydric alcohols such as glycerin
% By weight, particularly preferably 1.0 to 20% by weight.

Further, the hair dye base (B) may appropriately contain a fragrance, a surfactant, an oil, a higher alcohol, a fatty acid and the like.

The hair dye composition of the present invention may contain a dye in the hair dye base (B). The dye is preferably an acidic dye, and examples of the acidic dye include nitro dye, azo dye, nitroso dye, triphenylmethane dye, xanthene dye, quinoline dye, anthraquinone dye, indigo dye, and the like. , Red No. 3,
Red 102, Red 104, Red 105, Red 10
No. 6, Yellow No. 4, Yellow No. 5, Green No. 3, Blue No. 1, Blue No. 2, Red No. 201, Red No. 227, Red No. 220, Red No. 230, Red No. 231, Red No. 232, Orange No. 205
No., Orange No. 207, Yellow No. 202, Yellow No. 203, Green No. 201, Green No. 204, Green No. 205, Blue No. 202
No., Blue No. 203, Blue No. 205, Brown No. 201, Red No. 401, Red No. 502, Red No. 503, Red No. 504
No., Red No. 506, Orange No. 402, Yellow No. 402, Yellow No. 403, Yellow No. 406, Yellow No. 407, Green No. 401
No. 402, green No. 401, purple No. 401, black No. 401 and the like. Among them, acid dyes preferable from the viewpoint of hair dyeing power include Yellow No. 4, Green No. 204, Red No. 2, and Red No. 102.
No. 3, Green No. 3, Blue No. 1, Blue No. 205, Yellow 403
No. 106, Red No. 201, Red No. 201, Orange No. 205, Black No. 401, Green No. 201 or Purple No. 401, and Black No. 401, Purple No. 401, Orange No. 205, Yellow No. 403 or Red No. 106 is particularly preferable. . In addition, these acid dyes can be used alone or in combination of two or more. The content of the acid dye is preferably 0.001 to 10% by weight, particularly preferably 0.01 to 5% by weight. A hair dye composition containing an acid dye and γ-caprolactone can be used as a hair dye that is difficult to color the skin.

The hair dye composition of the present invention is in the form of a liquid, a gel,
It is preferably in the form of a cream. LPG, D
It may be in the form of an aerosol in combination with a propellant gas such as ME. As a typical method of use, after applying an appropriate amount of the composition of the present invention to hair, the composition is allowed to stand for 1 minute to 1 hour and then rinsed.

[0017]

EXAMPLES Examples 1 to 6 Hair dye compositions were prepared according to the formulations shown in Table 1.

(1) A composition (hair dye base (B)) containing components other than the dyes in the formulations shown in Table 1 was used as a differential scanning calorimeter by Seiko Instruments Inc. Was used to determine the melting point.

(2) A color difference meter (Minolta Camera Co., Ltd.) as a color difference meter according to the above-mentioned method using a composition (hair dye base (B)) containing components other than dyes in the formulations shown in Table 1. , CR-200 was used to measure the color difference value.

(3) The hair dye compositions (including dyes) shown in Table 1 were evaluated for skin staining and human hair dyeing effects by the following methods. <Evaluation of skin stain> The skin of the upper arm is shampooed and washed. A cup (opening 0.5 cm ² ) is applied to this, and 5 g of the hair dye composition is brought into contact with the skin (room temperature, 10 minutes). Then, rinse and shampoo wash. The staining of the stained skin was evaluated according to the following criteria and is shown in Table 1. ：: no skin contamination △: slight ×: considerable <Human hair dyeing evaluation> To 1 g of human hair (European and American human hair Natural White), 50 g of the hair dye composition is applied (30 ° C., 10 minutes). Then, rinse and shampoo wash. The dyeing of the dyed Western human hair was evaluated according to the following criteria, and is shown in Table 1.

○: Human hair is dyed well △: Human hair is dyed ×: Human hair is not dyed very much

The results obtained are shown in Table 1. As is clear from Table 1, the hair dye composition using the hair dye base having the properties (1) and (2) of the present invention has no skin contamination and a high hair dyeing effect.

[0023]

[Table 1]

[0024]

EFFECT OF THE INVENTION By using the hair dye composition of the present invention, the hair can be dyed well without staining the scalp during the hair dyeing operation.

Continuing on the front page (72) Inventor Takashi Ito 2-1-3 Bunka, Sumida-ku, Tokyo F-term in Kao Corporation Research Laboratory 4C083 AB051 AB052 AC102 AC152 AC241 AC302 AC641 AC792 AC841 AC842 AD282 AD491 BB21 BB60 CC36 EE10 EE26

Claims (2)

[Claims] 1. N- (3-hexadecyloxy-2-hydroxypropyl) -N- (2-hydroxyethyl) hexadecanamide 27.5% by weight, cholesteryl isostearate 5.0% by weight, stearic acid 10.0 % Of cholesterol and 50.0% by weight of distilled water are stirred at 80 ° C. for 30 minutes and then naturally cooled to room temperature. Difference between the melting point of the solid part of the mixture of 25 parts by weight of the hair dye base excluding hair and the melting point of the solid part of the mixture of 3 parts by weight of the lipid model composition for horny cells (A) and 25 parts by weight of distilled water. Is within 10 ° C., and the hair dye base (B) has red 1
Color difference value of goat hair when dyed at 30 ° C. for 10 minutes at a bath ratio of 1 (goat hair): 50 (hair dye) using a hair dye prepared by blending No. 06 with 0.1% by weight. A hair dye composition comprising a hair dye base (B) having a value of 70 or more. 2. The composition according to claim 1, which contains an acid dye.
The hair dye composition according to the above.