JP2002037714A - Hair cosmetic exhibiting effect in small amount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a hair cosmetic exhibiting little irritation to the skin and mucous membrane, excellent in conditioning effect by a using amount from 1/2 to 1/3 of usual amount and reducing the load to an environment. SOLUTION: The hair cosmetic is obtained by preparing an emulsified material obtained by blending an N-[3-alkyl-2-hydroxypropyl]-L-alginate, an oily component being a liquid state at normal temperature, another oily component being 2 solid state at the normal temperature and amino acids.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a hair cosmetic composition which is less irritating to the skin and mucous membranes and which has an excellent conditioning effect in a usage amount of about 1/2 to 1/3 of a usual amount, and a raw material cost. Without affecting the environment and reducing the burden on the environment.

[0002]

2. Description of the Related Art Usually, after using a shampoo for washing hair, a hair cosmetic such as a rinse, a hair conditioner and a hair pack is often used. In this hair cosmetic,
It is desired to have a conditioning effect such as imparting smoothness to hair and suppressing looseness.

As a conditioning agent, alkyl quaternary ammonium salts and the like are widely used. It is known that the alkyl quaternary ammonium salt gives the hair a comb-like property and a smoothness property by adsorbing on the negatively charged hair surface. But,
It is strongly irritating to the skin and mucous membranes, and has problems in terms of biodegradability.

[0004] As commercial products, very large plastic containers are filled, and these waste containers impose a great burden on the environment.

On the other hand, tertiary cationic surfactants such as diethylaminoethylamide stearate and dimethylaminopropylamide stearate, and N-coco fatty acid acyl L-
By using arginine ethyl / DL-pyrrolidone carboxylate, a preparation having good biodegradability can be prepared. However, they are not satisfactory in terms of conditioning effect. Also, N- [3-alkyloxy-2-
It is known that the use of [hydroxypropyl] -L-arginine salt is excellent in biodegradability and conditioning effect (JP-A-09-271655, JP-A-11-106329). However, this is premised on normal usage, and a small amount is not satisfactory.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the irritation to the skin and mucous membranes, and
An object of the present invention is to provide a hair cosmetic composition having an excellent conditioning effect with a usage amount of about 3 and to reduce the burden on the environment.

[0007]

According to the present invention, an N- [3-alkyloxy-2-hydroxypropyl] -L-arginine salt is mixed with an oil which is liquid at normal temperature, an ester oil or a hardened oil which is solid at normal temperature, and an amino acid. By obtaining the blended emulsion.

[0008]

Embodiments of the present invention will be described below.

The present invention relates to N- [3-alkyloxy-2
-Hydroxypropyl] -L-arginine salt, an oil component which is liquid at room temperature, an ester oil or hardened oil which is solid at room temperature, and an amino acid.

The N- [3-alkyloxy-2-hydroxypropyl] -L-arginine salt is specifically exemplified by
N- [3-
Alkyl (12,14) oxy-2-hydroxypropyl] -L-arginine hydrochloride liquid is preferred.

Specifically, the oily component which is liquid at normal temperature (20 ° C.) includes fats and oils composed of glycerin esters of fatty acids,
All oils such as long-chain fatty acids and hydrophobic hydrocarbons can be used. Any of synthetic oil, mineral oil, animal oil, and vegetable oil is used.

Preferably, an oil having a molecular weight of 500 or more and being liquid at normal temperature (20 ° C.) is used. Specifically, octyldodecyl myristate, tri (caprylic / capric acid)
Glycerin, oleyl oleate, isostearyl palmitate, isocetyl stearate, ethylene glycol dioleate and the like can be mentioned.

[0013] More preferably, esters of fatty acids and pentaerythritol are preferred. Specific examples include pentaerythrit tetra-2-ethylhexanoate and pentaerythrit tetraisostearate.

The amino acid is not limited, and may be a hydrolyzed protein containing an amino acid, but one or more selected from glycine, alanine, L-serine, L-glutamic acid and L-aspartic acid are blended. It is desirable.

The ester oil or hardened oil solid at room temperature (20 ° C.) is not particularly limited, but preferably has a melting point of 30 to 50 ° C. Specifically, birds (capryl
Ester oils such as glyceride and caprin / myristin / stearic acid).

More preferably, the melting point is adjusted to 30 to 50 ° C. by hydrogenating vegetable oil, and examples thereof include hydrogenated coconut oil, hydrogenated palm oil, hydrogenated rapeseed oil, and hydrogenated olive oil. .

The amounts of the components are preferably 60 to 99.0% by weight of water, N- [3-alkyloxy-
2-hydroxypropyl] -L-arginine salt 0.3 to
3% by weight, oily component liquid at room temperature 0.01-20% by weight
And more preferably 70 to 99.7% by weight of water,
N- [3-alkyloxy-2-hydroxypropyl]
-L-arginine salt is 0.5 to 2.5% by weight, and oily component which is liquid at room temperature is 0.1 to 10.0% by weight.

The amino acid content is 0.01 to 3.0% by weight.
Is preferably added. If the amount is less than 0.01% by weight, the effect is not sufficient. Even if the amount exceeds 3.0% by weight, the effect corresponding to the amount cannot be expected, so that 3.0% by weight is sufficient.

The amount of the ester oil or hardened oil solid at room temperature is preferably 0.01 to 3.0% by weight, more preferably 0.1 to 1.0% by weight. 0.01
If the amount is less than 30% by weight, the effect is not sufficient.

Further, when glycerin is blended in the formulation, a particularly moist feeling is easily obtained.

Incidentally, as long as the effects of the present invention are not impaired,
Various components usually used for hair cosmetics can be added.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto. (Example 1) Oil phase tetra-2-ethylhexanoic acid pentaerythritol 5.0% cetanol 4.0% aqueous phase N- [3-alkyl (12,14) oxy-2-human-peroxyfluoropropyl] -L-alkynine hydrochloride Salt solution 2.0% Glycine 0.5% Hydrogenated palm oil 0.5% Lactic acid Appropriate amount Preservatives Appropriate amount Flavoring amount Appropriate amount Purified water Make the total amount 100. Charge with high speed stirring using an Ajihomo mixer and cool.

[0023]

Effects of the Invention A monitor test was conducted on the feeling of use when each cosmetic was applied to hair for 20 women in their 20s and 50s, and evaluated according to the following criteria. (Usage method) The amount used is usually one of the amount used by each person.
/ 3 volume. Specifically, the amount of use is approximately 3.0 g for semi-long hair women and approximately 6.0 g for long hair women. (Smoothness during application) ◎ Evaluate that 80% or more of the subjects are moist. ○ Evaluate that 50% or more and less than 80% of the subjects are moist. △ 30% or more and less than 50% of the subjects are evaluated as moist. X Evaluate that less than 30% of the subjects are moist. (Moist feeling of hair after drying) ８０ Evaluate that 80% or more of the subjects are moist. ○ Evaluate that 50% or more and less than 80% of the subjects are moist. △ 30% or more and less than 50% of the subjects are evaluated as moist. X Evaluate that less than 30% of the subjects are moist. (Smoothness of hair after drying) ８０ Evaluate that 80% or more of the subjects are moist. ○ Evaluate that 50% or more and less than 80% of the subjects are moist. △ 30% or more and less than 50% of the subjects are evaluated as moist. X Evaluate that less than 30% of the subjects are moist.

[0024]

[Table 1]

[0025]

[Table 2]

[0026]

Industrial Applicability According to the present invention, there is provided a hair cosmetic which is less irritating to the skin and mucous membranes, has an excellent conditioning effect in a usage amount of about 1/2 to 1/3 of a usual amount, and has a low environmental load. Can be reduced.

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Claims (8)

[Claims] 1. An (A) N- [3-alkyloxy-2-hydroxypropyl] -L-arginine salt, (B) an oily component which is liquid at ordinary temperature, (C) an amino acid, and (D) an ester which is solid at ordinary temperature. Hair cosmetics containing one or more selected from oils and hardened oils. 2. The composition of claim 1, wherein the component (A) is N- [3-alkyl (12,14) oxy-2-hydroxypropyl]-
A hair cosmetic which is L-arginine hydrochloride. 3. The composition according to claim 1, wherein the component (B) has a molecular weight of 5
A hair cosmetic which is an oily component which is liquid at room temperature at a temperature of 00 or more. 4. A hair cosmetic wherein the component (B) according to claim 3 is an ester of a fatty acid and pentaerythritol. 5. The hair cosmetic composition according to claim 1, wherein the component (C) is one or more selected from glycine, alanine, L-serine, L-glutamic acid and L-aspartic acid. 6. The composition according to claim 1, wherein the component (D) has a melting point of 3
A hair cosmetic composition having a temperature of 0 to 50C. 7. A cosmetic for hair, wherein the component (D) according to claim 6 is a hardened oil whose melting point has been adjusted by hydrogenating vegetable oil. 8. The composition according to claim 1, wherein (A) is from 0.5 to
2.5% by weight, (B) 0.1 to 10.0% by weight, (C)
0.01 to 3.0% by weight and (D) 0.01 to 3.0% by weight.