JP2000351718A - Hair dyeing agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair dyeing agent capable of controlling a pungent odor without impairing the depth of hair dyeing by making the hair dyeing agent include a specific carboxylic acid and a specific amine. SOLUTION: This hair dyeing agent comprises (A) 0.01-10 wt.% of a hydroxycarboxylic acid and/or its salt and (B) 0.1-20 wt.% of monoethanolamine. The hydroxycarboxylic acid is preferably an α-hydroxy acid (e.g. glycolic acid) and/or a β-hydroxy acid (e.g. β-butyric acid). The hair dyeing agent is preferably an acidic hair dyeing agent. The hair dyeing agent can includes arbitrary components useful in an ordinary hair dyeing agent. An especially preferable arbitrary component is a protein such as collagen, etc., capable of covering the damage of hair after hair dyeing and its derivative. Further the hair dyeing agent contains oils and fats having moisture retention and oils and fats having an improving action on combing properties, since a damage in hair dyeing can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a hair dye such as an oxidative hair dye.

[0002]

2. Description of the Related Art In an aging society, the degree to which elderly people enter the society has greatly increased compared to last year. For this reason, in the field of cosmetics, demand for hair dyes and the like for elderly people has been increasing remarkably. From a different point of view, the needs of hair dyes are not only experienced by the elderly but also by the brown hair boom in recent years, and they are increasing so far that they have no experience. In other words, a situation has been formed in which society is paying attention to hair dyes. In particular, there is an increasing need for oxidized hair dyes that do not require care for a while once dyed. Along with this, various demands have been made on the quality of oxidized hair dyes, which has not been considered a problem so far. Among such things, the demand is high, and
One of the technically difficult solutions is the irritating odor of oxidized hair dye when used. This is because the oxidative hair dye requires a volatile base to develop color, and ammonia is usually used as such a volatile base because of its good volatility and deep dyeing properties. This causes a pungent odor. In order to suppress this irritating odor, it is conceivable to use an organic amine such as monoethanolamine, which has a relatively low volatility, as a countermeasure. There is a drawback that the depth becomes shallow, thereby impairing the maintainability of hair dye, and at present, such organic amines are rarely used. That is, it has been desired to develop a means for suppressing irritating odor in an oxidized hair dye without impairing the hair dye depth.

On the other hand, in the field of skin cosmetics, α-hydroxy acids and / or salts thereof are already contained in wrinkle improving cosmetics because of their effect of improving wrinkles. And it was not known at all that the presence of this product could significantly improve the uniform hair dyeing properties of the hair dye and its hair dye depth. Further, regarding the β-hydroxy acid and / or its salt, the action in the field of cosmetics has been known only as an acid. Further, it is not known that monoethanolamine is used together with hydroxycarboxylic acid, and it is therefore completely known that hydroxycarboxylic acid and monoethanolamine are used in combination in the field of hair dyes. It has not been known at all that such a combination can provide a hair dye excellent in hair dye depth.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made under such circumstances, and means for suppressing a pungent odor in a hair dye such as an oxidized hair dye without impairing the hair dye depth. The task is to provide

[0005]

In view of such circumstances, the present inventors have sought to provide a means for suppressing irritating odor in hair dyes such as oxidized hair dyes without impairing the hair dye depth. As a result of their research efforts, they have found such characteristics in hair dyes, characterized in that they contain hydroxycarboxylic acids such as α-hydroxy acids and / or salts thereof and monoethanolamine, and have completed the invention. Reached. Hereinafter, the present invention will be described in detail focusing on embodiments.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (1) Hydroxycarboxylic acid and / or salt thereof which are essential components of the present invention The hair dye of the present invention comprises hydroxycarboxylic acid such as α-hydroxy acid, β-hydroxy acid and salts thereof. And / or two or more selected from salts thereof as essential components. As these hydroxycarboxylic acids, any carboxylic acid having a hydroxyl group can be used without any particular limitation, and α-hydroxy acids and β-hydroxy acids are particularly preferable. Among them, as the α-hydroxy acid, any carboxylic acid having a hydroxyl group at the α-position used in the field of cosmetics and the like can be used in the present invention without any particular limitation, and such an acid can be used. Preferred examples of the α-hydroxy acid include glycolic acid, lactic acid, tartaric acid and the like. Many of these α-hydroxy acids have an asymmetric carbon at the α-position and often have stereoisomers such as optical isomers and diastereomers, but in the hair dye of the present invention, the α-hydroxy acid The action of is not stereospecific, so that any conformation can be used. Among these, glycolic acid is particularly preferred in view of its effect. The β-hydroxy acid is not particularly limited as long as it is a carboxylic acid having a hydroxyl group at the β-position. For example, β-lactic acid can be preferably exemplified. Among the α-hydroxy acids and β-hydroxy acids, α-hydroxy acids are more preferred. In addition, as their salts, any physiologically acceptable salts can be used without particular limitation, for example, alkali metal salts such as sodium and potassium, alkaline earth metal salts such as calcium and magnesium, and ammonium. Examples thereof include salts, organic amine salts such as triethanolamine, triethylamine and monoethanolamine, and basic amino acid salts such as lysine and arginine. In the hair dye of the present invention, hydroxycarboxylic acids such as these α-hydroxy acids, β-hydroxy acids and salts thereof and / or
Or one or more selected from salts thereof. These promote the penetration of the hair dye component into the interior of the hair, thereby increasing the depth of the hair dye and improving the uniformity and fastness of the hair dye. Due to this effect, even when an organic amine such as monoethanolamine is used as a base,
Since the hair dyeing reaches a sufficient depth, the hair dye maintaining property is not impaired. In addition, such excellent penetration promoting action has the effect of shortening the time required for hair dyeing, and also has the effect of suppressing damage to hair after hair dyeing. The preferred content of the hydroxycarboxylic acid and / or its salt in the hair dye of the present invention is 0.01 to 10%.
%, More preferably 0.1 to 5% by weight. This is because if the amount is too small, the effect may not be exhibited, and if the amount is too large, the degree of freedom of mixing other components may be impaired.

(2) Monoethanolamine which is an essential component of the hair dye of the present invention The hair dye of the present invention is characterized by containing monoethanolamine as an essential component. Since monoethanolamine has low volatility, generation of a pungent odor is extremely low when it is contained as a base in a hair dye. In the hair dye of the present invention, the content of monoethanolamine may be in accordance with the content of ammonia as the number of moles, and specifically,
0.1 to 20% by weight, and more preferably 1 to 10% by weight.
% By weight. This content may vary depending on the content of an oxidation dye or the like in the hair dye. In addition, as long as the effects of the present invention are not impaired, ammonia, which is a conventionally used base, may be used.
It is preferable not to use it.

(3) Hair Dye of the Present Invention The hair dye of the present invention is one or two selected from the above monoethanolamine, hydroxycarboxylic acid and salts thereof.
It is characterized by more than species. The hair dye of the present invention can contain, in addition to the above essential components, optional components that are usually used in hair dyes. Here, the term "hair dye" as used in the present invention is a general term for external preparations used for changing the color tone of hair, and includes semi-permanent hair dyes, permanent hair dyes, hair bleaching agents, these pretreatment agents and post-treatment agents. It encompasses concepts such as treatment agents. Particularly preferred as the hair dye of the present invention is a permanent hair dye containing an oxidation dye and the like. Optional components that can be used in the hair dye of the present invention include, for example, reactive dyes, resorcinol, oxidation dyes such as aminophenol and derivatives thereof, collagen, keratin and derivatives thereof, hair protection components such as amino acids and derivatives thereof, squalane and microparticles. Hydrocarbons such as crystallin wax, esters such as jojoba oil and gay wax, triglycerides such as tallow, olive oil, higher alcohols such as cetanol and oleyl alcohol, stearic acid, fatty acids such as oleic acid, glycerin and 1,1 Polyhydric alcohols such as 3-butanediol, nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, thickeners such as ethanol and carbopol, preservatives, ultraviolet absorbers,
Preferred examples include antioxidants, pigments, powders, and humectants such as plant extracts. Among these, particularly preferred optional components are proteins such as collagen and derivatives thereof, and more preferably, of these components, those having a large molecular weight and those having a small molecular weight are used in combination. As such a combination, there is a combination of Promois W-32R and Promois W-52Q manufactured by Seiwa Kasei Kogyo Co., Ltd., and these are added in a ratio of 40:60 to 60:40 by 0.00.
The content of 1 to 0.1% by weight is preferable since the damage of the hair after hair dyeing can be complemented. Further, it is very advantageous to include oils and fats having moisturizing properties and oils and fats having an action such as improvement of combability, because damage in hair dyeing can be reduced. Examples of such fats and oils include hydrocarbons such as squalane, esters such as jojoba oil and neopentyl glycol diisooctanoate, dimethicone, methylphenyl polysiloxane, silicone elastomer, polyoxyethylene-modified silicone, amodimethicone, Silicones (including emulsions) such as acrylic acid-modified silicones and the like can be mentioned. Of these, silicones are particularly preferred. By processing these raw materials according to the usual method,
The hair dye of the present invention can be produced.

[0009]

The present invention will be described in more detail with reference to the following examples, but it is needless to say that the present invention is not limited only to these examples.

<Examples 1 to 3> A permanent hair dye (first liquid) was prepared according to the following formulation. That is, the ingredients were stirred and solubilized to obtain a hair dye. Lanolin fatty acid octyldodecyl 1 part by weight POE lauryl ether 35 parts by weight POE oleyl ether 1 part by weight Coconut oil fatty acid diethanolamide 10 parts by weight 1,3-butanediol 5 parts by weight Ethanol 10 parts by weight Resorcin 1 part by weight Sodium sulfite 1 part by weight 0 1N hydrochloric acid 10 parts by weight metaaminophenol 0.1 parts by weight orthoaminophenol 0.5 parts by weight paraphenylenediamine 1 part by weight α-hydroxy acid * 1 part by weight stearyltrimethylammonium chloride 2 parts by weight monoethanolamine 5 parts by weight water 16.4 parts by weight * Details are shown in Table 1.

[0011]

[Table 1]

<Example 4> A hair dyeing test was conducted using the hair dyes of Examples 1 to 3 as a first liquid and a 5% hydrogen peroxide solution as a second liquid using a gray hair bundle. An equal amount of these two liquids was combined, and the bundle of white hair was immersed in this for 20 minutes, washed with water, cut the hair, and examined the degree of hair dyeing from the cross section. The degree of hair dyeing is based on the extent to which the inside of the hair is dyed (hair dye depth): ++: dyed quite deeply, +: dyed sufficiently deep, ±: slightly insufficient depth,
-: Judgment was made based on the criterion that the depth was not enough. Further, the degree of generation of irritating odor at the time of hair dyeing is as follows: ++: no irritating odor, +: level at which irritating odor is not problematic, ±: slightly irritating odor,-: stimulating odor Judgment was made based on the following criteria. As Comparative Example 1, the monoethanolamine of Example 1 was replaced with ammonia (ammonia water was used, and the concentration of ammonia was adjusted so as to be equivalent to monoethanolamine), and Comparative Example 2 was Example 1. Was prepared by substituting the glycolic acid of Example 1 with acetic acid. As Comparative Example 1, the monoethanolamine of Example 1 was substituted by ammonia, and the glycolic acid was substituted by water. Table 2 shows the results. From this, it is apparent that the hair dye of the present invention has excellent properties with less pungent odor, though the hair dyeing effect is not impaired. It can also be seen that glycolic acid is particularly preferred as the α-hydroxy acid.

[0013]

[Table 2]

Example 5 A permanent hair dye (first liquid) was prepared according to the following formulation. That is, the ingredients were stirred and solubilized to obtain a hair dye. Although the hair dyeing depth is slightly inferior, similar to the hair dyes of Examples 1 to 3, although the hair dyeing effect is not impaired, it has excellent properties with little pungent odor. The evaluation was made in the same manner as in Example 4. Lanolin fatty acid octyldodecyl 1 part by weight POE lauryl ether 35 parts by weight POE oleyl ether 1 part by weight Coconut oil fatty acid diethanolamide 10 parts by weight 1,3-butanediol 5 parts by weight Ethanol 10 parts by weight Resorcin 1 part by weight Sodium sulfite 1 part by weight 0 15. 1N hydrochloric acid 10 parts by weight metaaminophenol 0.1 part by weight orthoaminophenol 0.5 part by weight paraphenylenediamine 1 part by weight β-lactic acid 1 part by weight stearyltrimethylammonium chloride 2 parts by weight monoethanolamine 5 parts by weight water 16. 4 parts by weight

Example 6 A permanent hair dye (first liquid) was prepared according to the following formulation. That is, the ingredients were stirred and solubilized to obtain a hair dye. This is similar to the hair dyes of Examples 1 to 3, although the generation of irritating odor is slightly inferior.
The same evaluation as in Example 4 revealed that the hair dyeing properties were excellent, with little irritating odor, even though the hair dyeing properties were not impaired. Lanolin fatty acid octyldodecyl 1 part by weight POE lauryl ether 35 parts by weight POE oleyl ether 1 part by weight Coconut oil fatty acid diethanolamide 10 parts by weight 1,3-butanediol 5 parts by weight Ethanol 10 parts by weight Resorcin 1 part by weight Sodium sulfite 1 part by weight 0 1N hydrochloric acid 10 parts by weight metaaminophenol 0.1 part by weight orthoaminophenol 0.5 part by weight paraphenylenediamine 1 part by weight glycolic acid 1 part by weight stearyltrimethylammonium chloride 2 parts by weight monoethanolamine 4 parts by weight ammonia water 1 part by weight Parts water 16.4 parts by weight

Example 7 A permanent hair dye (first liquid) was prepared according to the following formulation. That is, the ingredients were stirred and solubilized to obtain a hair dye. The same evaluation as in Example 4 revealed that this product had very excellent properties with little irritating odor, although hair dyeing properties were not impaired. Lanolin fatty acid octyldodecyl 1 part by weight POE lauryl ether 35 parts by weight POE oleyl ether 1 part by weight Coconut oil fatty acid diethanolamide 10 parts by weight 1,3-butanediol 5 parts by weight Ethanol 10 parts by weight Resorcin 1 part by weight Sodium sulfite 1 part by weight 0 1N hydrochloric acid 10 parts by weight metaaminophenol 0.1 part by weight orthoaminophenol 0.5 part by weight paraphenylenediamine 1 part by weight glycolic acid 1 part by weight stearyltrimethylammonium chloride 2 parts by weight monoethanolamine 5 parts by weight Promois W32R 0. 1 part by weight Promois R53Q 0.1 part by weight Polyoxyethylene modified silicone 0.1 part by weight Water 16.1 parts by weight

[0017]

According to the present invention, it is possible to provide a means for suppressing a pungent odor in a hair dye without impairing the hair dye depth.

Continued on front page F-term (reference) 4C083 AB012 AB082 AB352 AC102 AC122 AC182 AC242 AC301 AC302 AC352 AC472 AC541 AC542 AC552 AC692 AD432 CC36 EE03 EE07

Claims (3)

[Claims] 1. A hair dye comprising hydroxycarboxylic acid and / or a salt thereof and monoethanolamine. 2. The hair dye according to claim 1, wherein the hydroxycarboxylic acid is an α-hydroxy acid and / or a β-hydroxy acid. 3. The hair dye according to claim 1, wherein the hair dye is an oxidative hair dye.