JP2005060354A - Hair dye composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an almost oil-free and water-soluble hair dye composition that scarcely has greasiness after application, permits easy formation of desired hair styles without anxiety of hair stain, hair damage and hair falling caused by dust or the like. <P>SOLUTION: The hair dye composition comprises a silver compound in an amount of 0.01 to 5 mass% in terms of silver, sulfur in an amount of 0.01 to 5 mass%, a water-soluble high polymer material in an amount of 0.01 to 10 mass% and water. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a hair dye composition for dyeing hair such as white hair into a black color, and more particularly to a water-soluble hair dye composition containing a silver compound.

  As a dyeing agent for dyeing hair in black or brown, such as black, brown, metallic compounds such as lead, silver or copper and other substances (sulfur, nickel, iron, ammonium thioglycolate, sulfide, etc.) It has been conventionally known to use a coloring material produced by a reaction. Among these, the coloring material obtained from the silver compound utilizing the photoreduction coloring action is excellent in terms of dyeing power and safety on the hair. For example, a coloring component is added to the silver compound (silver nitrate, silver lactate). An oily cream hair dye formulated by adding a surfactant, alcohol, and a humectant has been proposed (Patent Document 1).

The hair dye is usually applied to the hair in an appropriate amount and left in that state for a few minutes to a day, and then washed off. The hair dye attached to the hair by application develops color by reaction, and the coloring substance gradually penetrates into the hair and the hair is dyed from the surface. Usually, the above-described hair dyeing is repeated several times in order to enhance the dyeing effect.
JP 2002-348221 A

When using the above-mentioned oily cream hair dye, it is easy to apply to the hair, but it is easy to stick, so it is difficult to shape the hair while the hair is being dyed after application. There is a shortcoming. In addition, even after washing the hair, the oil remaining in the hair may adsorb dust in the air and cause hair stains, and the oxidation of the oil may cause damage to the tissue inside the hair or hair loss.
The present invention has almost no stickiness after application to the hair, is easy to shape the hair, and is less likely to cause contamination of the hair due to adhesion of dust, etc., hair damage, hair loss, etc. It aims at providing the hair dye composition which does not contain.

  The present invention relates to a dye containing 0.01 to 5% by mass of silver as a silver compound, 0.01 to 5% by mass of sulfur, 0.01 to 10% by mass of a water-soluble polymer substance, and water (remaining amount). In the hair composition.

The hair dye composition of the present invention is based on an aqueous solution of a water-soluble polymer substance and contains a silver compound and sulfur. These components are described below.
A silver compound functions as a dyeing | staining component (silver sulfide) by reaction with sulfur, As such a silver compound, silver nitrate and silver lactate can be mentioned, for example. The silver compound is contained in the composition in an amount of 0.01 to 5% by mass as silver. Preferably, the content is 0.05 to 3% by mass, and more preferably 0.1 to 1% by mass. In preparation, the silver compound is preferably used, for example, as an aqueous solution.

As the sulfur, it is preferable to use a simple substance of sulfur such as α sulfur (orthorhombic) or β sulfur (monoclinic). From the viewpoint of room temperature stability, α sulfur is preferably used. Further, since sulfur as a simple substance is insoluble in water, it can also be used as a sulfur compound (for example, SO ₂ ) that is easily dissolved in water. Sulfur is contained in the composition as sulfur in an amount of 0.01 to 5% by mass. Preferably, the content is 0.05 to 3% by mass, more preferably 0.1 to 1% by mass.

  Examples of the water-soluble polymer substance include water-soluble vinyl polymers such as carboxyvinyl polymer, polyvinyl alcohol, and polyvinylpyrrolidone; carboxymethylcellulose (CMC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC), hydroxypropylmethylcellulose ( HPMC), cationized cellulose (eg o- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride, and o- [2-hydroxy-3- (lauryldimethylammonio) propyl] hydroxyethylcellulose chloride) Celluloses such as xanthan gum, guar gum, gum arabic, and cationized gum (eg o- [2-hydroxy-3- (trimethylammonio) chloride chloride) It can be exemplified seaweed extracts such as and carrageenan;] guar) gums such as. In these, a water-soluble vinyl polymer (especially carboxy vinyl polymer) or cellulose is preferable. For example, by using carboxyvinyl polymer, the pH of the resulting composition can be maintained acidic, and therefore, fading of the product substance due to the reaction with the silver compound under the over alkali condition can be suppressed. The water-soluble polymer substance has a viscosity (25 ° C.) of a 2.5% by mass aqueous solution in the range of 4 to 6 Pa · s (Pascal · second) in consideration of handling properties such as applicability of the resulting composition. Preferably there is.

  The water-soluble polymer substance is contained in the composition in an amount ranging from 0.01 to 10% by mass. Preferably, the content is 0.05 to 5% by mass, more preferably 0.1 to 3% by mass. The water-soluble polymer substance is preferably used as an aqueous solution having a viscosity in the above range. In this case, when preparing the composition, it can be used as it is in the form of an aqueous solution. However, in order to ensure applicability and handling properties of the resulting composition, the aqueous solution is gelled by adding an alkaline agent. Are preferably used. Examples of the alkaline agent include triethanolamine, diethanolamine, arginine, potassium hydroxide, and sodium hydroxide. It is preferable to use triethanolamine. The addition amount of the alkaline agent varies depending on the water-soluble polymer substance to be used, but is usually 0.01 to 5% by mass, preferably 0.05 to the amount of the aqueous solution of the water-soluble polymer substance in the above viscosity range. It is -3 mass%, More preferably, it is 0.1-2 mass%. In addition, it is preferable that the quantity of the alkaline agent in a composition is 0.005-3 mass%. Thereby, the aqueous solution of the water-soluble polymer is gelled, and the viscosity (25 ° C.) is adjusted to a range of 100 to 200 Pa · s (Pascal · second). In addition, it is preferable that the gel containing the water-soluble polymer substance obtained by addition of a gelatinizer is under weak acidity.

  The hair dye composition of the present invention preferably contains a humectant. Examples of the humectant include glycerin, polyethylene glycol, propylene glycol, butylene glycol, pentanediol, and amino acids. A humectant is normally mix | blended in the quantity of 10-80 mass% in a composition. The content is preferably 20 to 60% by mass, more preferably 30 to 50% by mass. The hair dye composition of the present invention preferably further contains a monohydric alcohol for the purpose of sterilization, preserving, and cleaning. The alcohol is preferably a so-called lower (C2-6) alcohol, and examples thereof include ethanol and isopropanol. The alcohol is preferably blended in the composition in an amount of 5% by mass or less, more preferably 3% by mass or less, and still more preferably 1% by mass or less.

  The manufacturing method of the hair dye composition of this invention is not specifically limited, For example, it can manufacture by mixing said each component suitably in a dark room. In this case, it is preferable to add and mix at least one of them at the end so that the reaction between the silver compound and sulfur does not occur. More specifically, for example, in a dark room at room temperature (25 ° C.), an aqueous solution of a water-soluble polymer substance (preferably, an alkali agent is added) is preferably added with a moisturizer and mixed, and further silver It can be prepared by adding an aqueous solution of compound, sulfur and, if necessary, an alcohol, and finally adding and mixing water for adjustment.

  The hair dye composition of the present invention can be used in the same manner as conventional hair dyes. That is, when an appropriate amount is applied to the hair, a coloring reaction occurs due to a catalytic action, and the resulting material exhibits a blackish color. Then, the applied state is maintained until the coloring reaction proceeds and the dyeing of the generated coloring substance permeates the hair. The time required for dyeing is usually several minutes to 12 hours. In order to make the dyeing more effective, it is preferable to repeat the dyeing on the hair several times as described above.

  Since the hair dye composition of the present invention is formed as a water-soluble composition containing a water-soluble polymer substance, the hair dye composition is easy to handle, for example, washing to wash it off after applying it to hair. In addition, since no oil is used, there is almost no stickiness or glossiness due to the oil after application, so the hairstyle can be easily formed into a desired shape even after application, and the hair style has a refreshing feeling. Is possible. Moreover, since the hair is not damaged due to dirt or oxidation of the hair caused by oil, a hair dye with little damage to the hair can be provided.

  In a dark room at room temperature (25 ° C.), carboxyvinyl polymer (water-soluble polymer substance: 2.5 mass% aqueous solution viscosity (25 ° C.): about 5 Pa · s) 40 parts by mass of triethanolamine 0.2 as an alkaline agent Part by mass (0.5% by mass) was added. The obtained aqueous solution was gelled, and the viscosity (25 ° C.) at that time was 150 Pa · s. To the obtained gel, 40 parts by weight of butylene glycol (humectant) was added and mixed and stirred. Further, 2 parts by mass of a 10% by mass aqueous solution of silver nitrate (0.13 parts by mass as silver) and 0.2 parts by mass of sulfur (α-sulfur) were added thereto. Finally, 0.5 parts by mass of ethanol (bactericide) And water were added, the total amount was adjusted to 100 parts by mass, and the mixture was stirred and mixed to prepare an almost colorless and transparent jelly-like hair dye composition.

An appropriate amount of the obtained hair dye composition was applied to gray hair and maintained in that state for half a day. The coated hair was not sticky and could be formed into a normal hairstyle. Thereafter, the hair dye was washed away, and the dyeing state on the hair was observed. As a result, it was confirmed that the gray hair was dyed in a black color. In addition, the above-described hair dye application, dyeing, and hair washing were repeated three times, and the hair dyeing state was observed in the same manner. As a result, compared to the first time, it was confirmed that the color was even more uniform and dyed in a high density black color. Moreover, since it is based on a water-soluble polymer substance, all hair dyes were washed away by washing the hair. Further, the inside of the hair was observed with a microscope, but no damage was confirmed.

Claims (4)

  A hair dye composition comprising 0.01 to 5% by mass of silver as a silver compound, 0.01 to 5% by mass of sulfur, 0.01 to 10% by mass of a water-soluble polymer substance, and water.   The hair dye composition according to claim 1, wherein the water-soluble polymer substance is selected from the group consisting of water-soluble vinyl polymers, celluloses, gums, and seaweed extracts. The hair dye composition according to claim 1 or 2, wherein the silver compound is selected from silver nitrate and silver lactate. The hair dye composition according to any one of claims 1 to 3, comprising 10 to 80% by mass of a humectant.