JPH1087441A - Hair treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a hair treatment capable of retaining moistness, pliablenessility, and smoothness of hair for a long period. SOLUTION: This hair treatment comprises a first and a second agents and an anionic polymer is contained in the first agent. A cationic substance and a hair treatment compounding agent are contained in the second agent. The first agent is applied to hair and the second agent is then applied to the hair to thereby react the anionic polymer contained in the first agent with the cationic substance contained in the second agent on the hair. As a result, a complex (complex salt) is formed. Sodium D,L-pyrrolidonecarboxylate is preferably contained in the first agent and sodium polyaspartate, sodium alginate, a seaweed extract, etc., are preferred as the anionic polymer. A cationic surfactant, a cationic polymer, a cationic ion, etc., are preferred as the cationic substance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hair treatment, and more particularly, to a hair treatment comprising two agents, a first agent containing an anionic polymer and a second agent containing a cationic substance. The present invention relates to a hair treatment that can maintain good flexibility, good slippage, and the like for a long period of time.

[0002]

2. Description of the Related Art Conventional hair treatments usually include one hair treatment.
A hair treatment formulation containing a cationic surfactant and an oil agent as main components in an aqueous solvent to make a cream.Mainly, the hair is softened with a cationic surfactant, In order to prevent electrification, smoothen the surface of the hair with an oil agent, impart gloss and gloss to the hair, and improve the combability of the hair.

[0003]

However, when the above-mentioned hair treatment is used, the moist feeling, flexibility and slipperiness imparted to the hair are easily lost by washing the hair, and the effect is not sustained sufficiently. was there.

[0004] Accordingly, the present invention is to solve the above-mentioned problems in the conventional hair treatment and to provide a hair treatment which can maintain the moist feeling, flexibility, and good slipperiness of the hair for a long period of time. With the goal.

[0005]

The present invention provides a hair treatment comprising a first agent and a second agent, wherein the first agent comprises an anionic polymer, and the second agent comprises a cationic substance and a hair treatment. After the first agent is applied to the hair and the second agent is applied to the hair, the anionic polymer contained in the first agent and the cationic agent contained in the second agent are applied to the hair. By reacting with a substance to form a complex (complex salt), the moist feeling, flexibility, and good slippage of hair can be maintained for a long period of time, thereby achieving the above object.

That is, the complex formed by the reaction between the anionic polymer contained in the first agent and the cationic substance contained in the second agent on the hair forms a moist feeling, flexibility and slipperiness on the hair. In addition to imparting goodness, it acts as a moisturizing agent with excellent moisturizing effect, and even if hair washing is repeated, there is little decrease in moisturizing effect, keeping hair moistness, flexibility, good slipperiness etc. for a long time .

[0007] The moisturizing effect of the complex formed on the hair as described above lasts for a long time because the anionic polymer contained in the first agent penetrates into the hair, and in that state, the second agent contains the anionic polymer. It reacts with the contained cationic substance to form a complex and becomes insoluble in water.This is different from the case where a water-insoluble complex is simply applied on the hair, and the moisturizing action lasts for a long time. I do.

[0008] When the first agent contains sodium D, L-pyrrolidonecarboxylate, the heat retention of the hair is further improved, and the moist feeling, the flexibility and the smoothness of the hair are improved for a longer period of time. Be able to hold.

That is, sodium D, L-pyrrolidonecarboxylate has an excellent moisturizing action, and sodium D, L-pyrrolidonecarboxylate is contained in the first agent, and is allowed to penetrate into the hair, and then to anionic polymer Since a complex is formed by reaction with a cationic substance, D,
Sodium L-pyrrolidonecarboxylate will be covered with the complex film, and D,
It becomes difficult for sodium L-pyrrolidonecarboxylate to flow out, and the excellent moisturizing action of sodium D, L-pyrrolidonecarboxylate is maintained for a long time.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, examples of the anionic polymer contained in the first agent include sodium polyaspartate, sodium alginate, seaweed extract (seaweed extract prescribed by the standard for cosmetics formulation) and the like. These are used singly or as a mixture of two or more kinds. Particularly, sodium polyaspartate is preferred, and the sodium polyaspartate is used alone or the sodium polyaspartate is used together with another anionic polymer. It is particularly preferred to use them in combination.

The content of the anionic polymer in the first agent is not particularly limited, but may be from 0.01 to 20.
% By weight, especially 0.1 to 5% by weight. When the content of the anionic polymer in the first agent is less than the above,
There is a possibility that the effect of forming a complex on the hair and keeping the moist feeling, flexibility, good slipperiness, etc. of the hair for a long period of time may not be sufficiently exhibited,
If the content of the anionic polymer in the first agent is higher than the above, the hair may have a rough feel and the hair texture may be reduced.

When the first agent further contains sodium D, L-pyrrolidonecarboxylate, the moisturizing power of the hair is further improved, and the moist feeling, flexibility and good slippage of the hair can be improved for a longer period of time. It can be held.

The content of the sodium D, L-pyrrolidonecarboxylate in the first agent is 5 to 5.
50% by weight, especially 15-30% by weight, is preferred. D, L
If the content of sodium-pyrrolidonecarboxylate in the first agent is lower than the above, the effect of improving the moisturizing power of the hair with sodium D, L-pyrrolidonecarboxylate may not be sufficiently exhibited, If the content of sodium L-pyrrolidonecarboxylate in the first agent is higher than the above, salting out of other components or precipitation at a low temperature may cause the stability of the preparation to be lost.

The first agent has water as a main solvent. The first agent includes the anionic polymer and D,
In addition to sodium L-pyrrolidonecarboxylate, if necessary, for example, a thickener such as hydroxyethylcellulose, hydroxypropylcellulose, or hydroxypropylmethylcellulose, a preservative such as methylparaben, salicylic acid, or sodium benzoate; further, glycerin; A wetting agent such as 1,3-butylene glycol may be contained.

In the present invention, the reason why the anionic polymer is contained in the first agent is that the anionic polymer is sufficiently penetrated into the hair, the formed complex is prevented from flowing out of the hair by washing the hair, and the complex is formed by the complex. This is for maintaining the holding power such as the moist feeling, flexibility, and good slippage of the hair for a long period of time.

That is, in the present invention, since an anionic polymer and a cationic substance are reacted on hair to form a complex, it is necessary to contain the anionic polymer and the cationic substance in different agents. If the anionic polymer is contained in the second agent, the cationic substance must be contained in the first agent. If the cationic substance is contained in the first agent, the cationic substance is contained in the hair. When a film is formed on the upper surface, the anionic polymer contained in the second agent does not sufficiently penetrate into the hair, and as a result, the complex formed on the hair easily flows out of the hair by washing the hair, and This is because the holding power such as moist feeling, flexibility, and good slippage of the hair is easily lost.

As is also apparent from the above, even when the complex formed in advance is applied to the hair, the complex is easily detached from the hair, easily flows out from the hair by washing the hair, and the hair by the complex. Loss of holding power such as moist feeling, flexibility and good slip.

Examples of the cationic substance to be contained in the second agent include a cationic surfactant, a cationic polymer, a cationic ion and the like.

Examples of the cationic surfactant include alkyltrimethylammonium chlorides such as lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, dilauryldimethylammonium chloride, and dicetyltrimethyl chloride. And dialkyltrimethylammonium chlorides such as ammonium, distearyltrimethylammonium chloride and dibehenyltrimethylammonium chloride.

Examples of the cationic polymer include, for example,
Examples include cationized cellulose, cationized guar gum, cationized collagen, cationized keratin, cationized chitin, cationized chitosan, and the like.

The cations include, for example, calcium ions, magnesium ions and the like. When these are contained in the second agent, they are contained in the form of calcium chloride, magnesium sulfate or the like.

The content of these cationic substances in the second agent may theoretically be at least equimolar to the anionic polymer contained in the first agent. Is preferably contained in an amount of 0.01 to 20% by weight, particularly 0.1 to 5% by weight.

If the content of the cationic substance in the second agent is smaller than the above, the amount of the complex formed is small, and the effect of the complex may not be sufficiently exhibited. The polymer may remain on the hair and reduce the texture of the hair. If the content of the cationic substance in the second agent is higher than the above, the good slipperiness of the hair may be lost. .

The second agent has water as a main solvent.
This second agent contains a hair treatment compounding agent in addition to the cationic substance. This hair treatment compound is not particularly limited to a specific one,
For example, it is possible to use those which are blended in ordinary hair treatments. Typical examples thereof include cationic surfactants, oils, higher alcohols and polyhydric alcohols. Further, a preservative or the like may be contained.

As the cationic surfactant, the same ones as described above can be used. The cationic surfactant mainly has a function of softening the hair and preventing electrification of the hair.

Further, the cationic surfactant comprises a first
Since it can also serve as a cationic substance for forming a complex with the anionic polymer contained in the agent, when the cationic surfactant also serves as the cationic substance contained in the second agent, Is
It is preferable that about 2 to 10% by weight be contained in the second agent, and when another cationic substance is contained in the second agent, this cationic surfactant is contained in the second agent in an amount of 1%.
It is preferable to contain about 5% by weight.

Examples of oils include ester oils such as isocetyl isostearate, octyldodecyl myristate and isopropyl palmitate, branched alcohols such as octyldodecanol and isostearyl alcohol, medofoam oil, lanolin, avocado oil and jojoba oil. And dimethylpolysiloxane, silicone oil such as cyclic silicone, and the like.

This oil agent mainly has the effect of smoothing the surface of the hair, imparting gloss and luster to the hair and improving the combability of the hair. The content of the oil agent in the second agent Is preferably about 1 to 5% by weight.

The higher alcohol includes, for example, cetanol, behenyl alcohol, stearyl alcohol and the like.

The higher alcohol is used to make the second agent creamy and to easily stay on the hair. The content of the higher alcohol in the second agent is preferably about 1 to 10% by weight. .

Examples of the polyhydric alcohol include glycerin, ethylene diglycol, butylene glycol and the like.

The polyhydric alcohol functions as a wetting agent for promoting the penetration of the second agent into the hair, and the content of the second agent in the polyhydric alcohol is 0.5 to 50%.
About 10% by weight is preferable.

[0033]

Next, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to only these examples. In the following examples and the like,% indicating the concentration of the solution or dispersion is% by weight.

Examples 1 to 5 and Comparative Example 1 A hair treatment first agent was prepared with the composition shown in Table 1,
A hair treatment second agent was prepared with the composition shown in Table 2. The amounts of each component in the table are all parts by weight.

Hair treatment No. 1 whose composition is shown in Table 1
In preparing the preparation, a 30% aqueous solution of sodium polyaspartate was used, and Seamolient PN (trade name, solid concentration = 3.5%) manufactured by Philippe Rockley was used as the seaweed extract. A 50% aqueous solution of sodium pyrrolidonecarboxylate was used. Table 1 shows the solid content or pure content. The thickener used was hydroxyethyl cellulose, and the preservative was a mixture of methyl paraben, salicylic acid, and sodium benzoate.

The cationized cellulose used in the preparation of the second hair treatment agent having the composition shown in Table 2 was Leogard GP (trade name) manufactured by Lion Corporation, and the cationized guar gum was Labor Gum manufactured by Dainippon Pharmaceutical Co., Ltd. In the trade name), the preservative is a mixture of methyl paraben, salicylic acid and sodium benzoate as described above.

[0037]

[Table 1]

[0038]

[Table 2]

Of the first and second hair treatment preparations prepared as described above, first, the first preparation was applied to the hair after washing with shampoos of 10 female panelists in an amount of 40 g, and then the second preparation was applied. Was applied in an amount of 60 g, washed with water and dried, and then evaluated by each paneler for the moist feeling, flexibility and slipperiness of the hair. Table 3 shows the results.

The evaluation method was evaluated in four stages, with the best score being 4 points and the worst score (ie, no hair treatment) at 1 point. Was determined and indicated according to the following criteria.

：: 3 points or more Δ: 2 points or more and less than 3 points ×: 1 point or more and less than 2 points

The hair after the hair treatment is washed with a 2% aqueous solution of polyoxyethylene nonylphenol ether, and then the drying step is repeated. The hair has a moist feeling, flexibility, and good slipperiness. During the repetition, it was examined whether the hair treatment was maintained in a better condition than that in which no treatment was performed. The results are shown by the number of times of shampooing as the persistence of feel. The greater the number of times this hair was washed, the more moist the hair,
This indicates that the durability of the feel, such as flexibility and good slip, is excellent.

Further, the hair after the above hair treatment treatment was repeatedly washed and dried 10 times in the same manner as described above, and the moisture content of the hair was measured. Table 3 also shows the results. In addition,
The water content of the hair, which had not been treated by the hair treatment at all, was measured 8.8% after repeating the same washing and drying of the hair 10 times.

[0044]

[Table 3]

Comparative Example 1 substantially corresponds to a conventional standard one-part hair treatment. As is clear from the results shown in Table 3, Examples 1 to 5 are similar to Comparative Example 1. In comparison, the hair was excellent in moist feeling, flexibility, slipperiness, and the like, and in particular, the durability of the touch was excellent.

That is, in Comparative Example 1, which corresponds to the conventional standard hair treatment, if the hair was washed once, the moist feeling, flexibility, and good slippage imparted to the hair would be lost. In Nos. 1 to 5, the moist feeling, flexibility, good slippage and the like imparted to the hair were retained even after the hair was washed 10 times or more.

Comparative Example 1 also shows the moisture content of the hair.
Has a moisture content of 8.9% after washing and drying 10 times, and 10% of the hair which has not been subjected to any hair treatment.
Although there was almost no difference from the 8.8% of the water content after washing and drying, Examples 1 to 5 had a water content of 10% or more after washing and drying the hair 10 times. The hair treatment showed excellent moisturizing power.

[0048]

As described above, according to the present invention,
A hair treatment capable of maintaining the moist feeling, flexibility, and good slipperiness of the hair for a long time could be provided.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasushi Takeda 2-17-2 Akakawa, Asahi-ku, Osaka City Milbon Co., Ltd.

Claims (2)

[Claims] Claims: 1. A hair treatment comprising two parts, a first part and a second part, wherein the first part contains an anionic polymer and the second part contains a cationic substance and a hair treatment compound. The second agent is applied to the hair after the first agent is applied to the hair, and the anionic polymer contained in the first agent and the cationic substance contained in the second agent react on the hair to form a complex. Hair treatment characterized by forming. 2. The hair treatment according to claim 1, wherein the first agent contains sodium D, L-pyrrolidonecarboxylate.