JPH11124316A - Hair cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a hair cosmetic which gives no greasy touch to hair and possesses the supple touch, the fine set retentivity and the rehairdressing property. SOLUTION: This hair cosmetic comprises (A) 20-50 wt.% of a lubricant with a melting point of 35-90 deg.C, (B) 1.0-30 wt.% of a lubricant with a melting point lower than 35 deg.C and (C) 10-79 wt.% of water and the weight ratio between the components A and B in the compound amount is 1.0 or more in (A)/(B).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition to be applied to hair, and more particularly to a hair cosmetic composition having no stickiness, a supple feel, a good set holding property and a re-shaping property to hair. .

[0002]

2. Description of the Related Art Conventionally, hair cosmetics have been used by solubilizing, emulsifying and dissolving liquid oils such as silicone oils, ester oils and hydrocarbon oils for the purpose of giving the hair a supple feel and excellent luster. ing. However, oils typified by silicone oils have poor set retention properties on hair and are insufficient. If these oils are added in a large amount in order to improve the set retention, they are not satisfactory, such as stickiness and unnatural luster.

[0003] In addition, polymer compounds having various film-forming abilities have been used in hair cosmetics for the purpose of setting hair. In particular, acetic acid amphoteric dialkylaminoethyl methacrylate polymers, octyl acrylamide acrylate / hydroxypropyl acrylate / butylaminoethyl methacrylate copolymer, and quaternized vinylpyrrolidone / dimethylaminoethyl methacrylate are widely used. However, although these polymer compounds are excellent in set retention, they are stiff and have a drawback that once the formed film is broken, it is difficult to re-form hair.

In order to solve these drawbacks, hair cosmetics have been proposed in which an oil such as silicone is combined with a high molecular compound (Japanese Patent Application Laid-Open No. 2-111711). Although it gave excellent luster, it lowered the set retention, and was not satisfactory.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a hair with a non-sticky, supple feel,
An object of the present invention is to provide a hair cosmetic having good set holding properties and hair re-shaping properties.

[0006]

In view of such circumstances, the present inventors have made intensive studies and have found that (A) 20 to 50% by weight of an oil having a specific melting point and (B) an oil having a specific melting point. It contains 1.0 to 30% by weight and (C) 10 to 79% by weight of water, and has a weight ratio (A) / component (A) / component (B) /
It has been found that a hair cosmetic having (B) of 1.0 or more achieves the above object, and has completed the present invention. That is, the present invention relates to (A) an oil agent 2 having a melting point of 35 to 90 ° C.
0 to 50% by weight, (B) 1.0 to 30% by weight of an oil agent having a melting point of less than 35 ° C, and (C) 10 to 79% by weight of water, and the weights of the components (A) and (B) Compounding ratio (A) /
(B) is 1.0 or more, It is hair cosmetics characterized by the above-mentioned.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The component (A) which is a component of the present invention includes oils and fats such as hardened oil and mokuro, waxes such as beeswax, carnauba wax, candelilla wax, spermaceti and lanolin, and paraffin wax. , Microcrystalline waxes, hydrocarbon oils such as ozokerite and petrolatum, higher fatty acids such as stearic acid and myristic acid, higher alcohols such as cetanol and stearyl alcohol, and esters such as butyl stearate and cetyl lactate. And a material having a melting point of 35 to 90 ° C. Those having a melting point of 40 ° C. or higher are particularly preferred. These substances can be used alone or as a mixture of two or more kinds, and the compounding amount is 20 to 50% by weight.
5% by weight is particularly preferred. When the amount is less than 20% by weight, the set retention is insufficient, and when the amount exceeds 50% by weight, flexibility is lacking. When an oil agent having a melting point of more than 90 ° C. is used, it is difficult to obtain a stable composition, and it is difficult to produce a hair cosmetic.

The component (B) which is a component of the present invention includes oils and fats such as olive oil, coconut oil, safflower oil, castor oil, and cottonseed oil; hydrocarbon oils such as liquid paraffin, squalane, and volatile isoparaffin; Examples thereof include alcohols such as oleyl alcohol and isostearyl alcohol, silicones such as dimethylpolysiloxane and methylphenylpolysiloxane, and esters such as isopropyl myristate. Those having a melting point of less than 35 ° C. are selected and used. Those having a melting point of less than 30 ° C. are particularly preferred. Each of the above substances can be used alone or in combination of two or more. The compounding amount is 1.0 to 30% by weight, and particularly preferably 5.0 to 25% by weight. If the amount is less than 1.0% by weight, the hair reshaping property is inferior, and 30% by weight.
If it exceeds, a sticky feeling is generated. The compounding amount of the component (B) is equal to or less than the compounding amount of the component (A), that is, the weight mixing ratio (A) / (B) of (A) and (B) is 1.0.
And more preferably 1.5 or more. If the weight ratio (A) / (B) with the component (A) is less than 1.0, a sticky feeling is produced.

In the present invention, the melting point is based on the method of measuring the melting point of the second edition of the Cosmetic Ingredient Standard (Yakuji Nippo) Basically, the first method is used. However, the second method is used for a sample which is mainly a mixture and is non-crystalline, insoluble in water, and has a specific gravity of 1 or less, and the third method is used for petrolatums.

The amount of component (C) water, which is a constituent element of the present invention, is from 10 to 79% by weight, preferably from 20 to 70% by weight. If it is less than 10% by weight, it is difficult to impart flexibility to the hair, and if it is more than 79% by weight, the set retention is deteriorated.

[0011] The hair cosmetic composition of the present invention may further contain, in addition to the above essential components, a surfactant, an alcohol, a polymer compound, a plant extract, or the like, as long as the effects of the present invention are not impaired.
Collagens, propellants, preservatives, chelating agents, antioxidants, ultraviolet absorbers, pH adjusters, pigments, fragrances and the like can also be blended.

The hair cosmetic composition of the present invention can be in the form of a cream, a stick, an aerosol or the like, and is not particularly limited to a dosage form.

[0013]

The present invention will be described below with reference to examples and comparative examples. Note that the present invention is not limited by these.

The test methods of set retention and sensory test shown in Examples and Comparative Examples are as follows. In addition, the compounding quantity of the composition shown in the following tables is each shown by weight%.

(1) Hair styling preserving effect A hair cosmetic sample of 15 cm in length and 1 g in weight is uniformly coated with 0.5 g of a hair cosmetic sample and wound around a 2 cm diameter rod.
It was left in a constant temperature room at 45 ° C. for 6 hours and completely dried. After drying, the rod was removed and the apparent length (L) of the hair bundle was measured. Next, the hair bundle was suspended in a thermo-hygrostat at a temperature of 25 ° C. and a humidity of 90%, taken out 30 minutes later, and the apparent length (L ₀ ) of the hair bundle was measured again.

The hair styling (set) retention was determined by the following equation. Set retention (%) = (15−L ₀ ) ÷ (15−L) ×
100 Therefore, the closer this value is to 100, the higher the set retention.

The evaluation criteria are as follows. ◎: Very good set retention of 80% or more ○: Good Set retention of 50% or more and less than 80% △: Slightly poor Set retention of 30% or more and less than 50% ×: Poor set retention of less than 30%

(2) Sensory test Hair styling was performed by 20 subjects using hair cosmetic samples. After that, the subject himself was not sticky,
The suppleness (stiffness) and the hair re-styling property were organoleptically evaluated. The evaluation criteria are as follows.

No stickiness ：: Very good The number of subjects who answered that there was no stickiness was 18 or more ○: Good The number of subjects who answered that there was no sticky was 12 or more and less than 18 △: Somewhat bad stickiness The number of subjects who answered that there was no response was 8 or more and less than 12 ×: Bad The number of subjects who answered that there was no stickiness was less than 8

Suppleness 非常: Very good The number of subjects who answered that there was no stiffness was 18 or more ：: Good The number of subjects who answered that there was no stiffness was 12 or more and less than 18 △: Somewhat bad There was no stiffness 8 or more and less than 12 ×: Poor Less than 8 subjects who answered no stiffness

Hair reshaping property ：: very good 18 or more subjects who answered that hair reshaping is easy ○: good number of subjects 12 or more and less than 18 who replied that hair reshaping is easy △: Slightly bad The number of subjects who answered that re-haircutting was easy to be performed was 8 or more and less than 12 ×: The number of subjects who answered that re-haircutting was easy to be performed was less than 8

Examples 1 to 5 and Comparative Examples 1 to 5 Hair cosmetics having the formulations shown in Table 1 were prepared by a conventional method, and the above tests were carried out. The results are shown in Table 1.

[0023]

[Table 1]

As is clear from Table 1, the hair cosmetics of the present invention (Examples) all had excellent performance.

On the other hand, the hair cosmetics of Comparative Examples were inferior in any of set retention, non-stickiness, supple feel, and re-shaping properties, and could not achieve the object of the present invention.

Example 6 (Hair spray) A stock solution having the following composition was prepared by a conventional method, and the stock solution was 65% by weight.
Then, 35% by weight of dimethyl ether was added thereto to prepare a hair spray.

Paraffin wax (melting point 68 ° C.) 10.0 Cetanol (melting point 48 ° C.) 10.0 Myristic acid (melting point 55 ° C.) 10.0 Isopropyl myristate (melting point 9 ° C.) 10.0 Aminomethylpropanol 4.0 propylene Glycol 5.0 Pure water 51.0

[0028] The hair cosmetic composition of Example 6
It had no stickiness, had a supple feel, good set retention and hair re-shaping properties.

[0029]

As described above, the present invention can provide a hair cosmetic composition which has no stickiness to the hair, has a supple feel, has good set holding properties, and has re-shaping properties.

Claims (1)

[Claims] 1. An oil agent 2 having a melting point of 35 to 90 ° C.
0 to 50% by weight, (B) 1.0 to 30% by weight of an oil agent having a melting point of less than 35 ° C, and (C) 10 to 79% by weight of water, and the components (A) and (B) Weight ratio (A)
/ (B) is 1.0 or more, hair cosmetics characterized by the above-mentioned.