JPH0570332A - Emulsified cosmetic - Google Patents

Abstract

PURPOSE:To obtain the title cosmetic having favorable feeling touch after use such as dampish touch or soft touch by stably emulsifying an unsaturated fatty acid compound using a composite consisting of a protein or its hydrolyzate and phospholipid. CONSTITUTION:The objective cosmetic can be obtained by emulsifying (A) unsaturated fatty acid(s) such as linoleic acid, linolenic acid, olive oil, safflower oil, or grape oil using (B) as emulsifier, a composite consisting of the two components 1 and 2 described below produced by agitating, together with purified water, (1) a protein such as collagen, soybean casein or fibroin, or its hydrolyzate (e.g. obtained by hydrolytic enzymatic treatment) and (2) a phospholipid (e.g. natural phospholipid obtained from yolk, soybean, or corn) followed by ultrasonic treatment. It is preferable that the present cosmetic contain 0.05-5wt.% of the composite and 1-40wt.% of the unsaturated fatty acid compound.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulsified cosmetic composition which is excellent in the feeling of use such as moistness and softness of the skin and has good emulsion stability.

[0002]

2. Description of the Related Art For the purpose of imparting an emollient effect to cosmetics, an oily component is blended to form an emulsified cosmetic. In order to enhance the moist feel and softness of the skin, various emulsifiers are used. It is effective to mix unsaturated fatty acids contained in the animal or plant-derived oily component as the oily component.

[0003]

However, when the above-mentioned unsaturated fatty acids are emulsified with a nonionic, anionic, cationic or amphoteric surfactant which is usually used as an emulsifier, it is very useful as an oily component for cosmetics. There is a problem that the emulsification stability is inferior to the case of emulsifying a mineral oil often used in. Therefore, it has been difficult to mix unsaturated fatty acids in a desired amount in the emulsified cosmetic composition in order to obtain the effect of improving the feeling of use.

Recently, natural surfactants have been found which can be stably blended with the above oily ingredients. However, although the stability is improved, the excellent feel of use of the oily ingredients can be sufficiently brought out. Yes, I haven't.

Therefore, an object of the present invention is to provide an emulsified cosmetic which contains unsaturated fatty acids in a stable manner and has a favorable usability such as "skin moisturization" and "skin softness".

[0006]

Under such circumstances, as a result of intensive studies by the present inventors, the complex of protein and / or its hydrolyzate and phospholipid stably emulsifies unsaturated fatty acids. It was found that the cosmetics which can be used and have a preferable feeling of use such as "moisturizing feeling" and "soft feeling" have completed the present invention.

That is, the present invention is an emulsified cosmetic composition containing unsaturated fatty acids, in which a complex of protein and / or its hydrolyzate and phospholipid (hereinafter simply referred to as "complex") is blended as an emulsifier. The present invention relates to an emulsified cosmetic characterized by the above.

The protein used in the production of the complex compounded in the emulsion cosmetic of the present invention includes proteins obtained from plants and animals such as soybean protein, wheat protein, whey powder,
Soybean casein, fibroin, glucagon, collagen, gelatin, elastin, ovalbumin, milk casein, myosin, fibrinogen, alkali metal salts thereof, and the like, and the hydrolyzate thereof includes those obtained by hydrolytic enzyme treatment. ..

The phospholipids used in the production of the complex compounded in the emulsified cosmetic composition of the present invention include natural phospholipids extracted from animals and plants such as egg yolk, soybeans and corn, microorganisms such as Escherichia coli and the like. And hydrogenated compounds as well as synthetic phospholipids. Specific examples include phosphatidylcholine, phosphatidylinositol, phosphatidylylethanolamine, phosphatidylserine, sphingomyelin, phosphatidylglycerol, and dipalmitoylphosphatidylcholine.

The composite is manufactured, for example, as follows. That is, 0.1 to 50 parts by weight of phospholipid is added to 1 part by weight of protein and / or its hydrolyzate and mixed, purified water is added to the mixture, ultrasonic treatment is performed, and then dried. A complex is obtained.

The above-mentioned composites can be used alone or in combination of two or more kinds, and the blending amount thereof is 0 in the emulsion cosmetic of the present invention in order to obtain sufficient emulsion stability and prevent stickiness. 0.05 to 20% by weight, particularly 0.05 to 5% by weight is preferable.

Examples of unsaturated fatty acids to be added to the emulsified cosmetic composition of the present invention include unsaturated fatty acids such as oleic acid, linoleic acid, linoleic acid, ricinoleic acid, palmitoleic acid, myristoleic acid and hexadecenoic acid, or glycerides thereof. Examples thereof include components contained in various animal and vegetable oils such as esters, etc., and animal and vegetable oils containing these as the main components can be used. Specific examples of such animal and vegetable oils include avocado oil, almond oil, olive oil, cocoa butter, safflower oil, camellia oil, peach kernel oil,
Preferred examples include almond oil, castor oil, grape oil, macadamia nut oil, mink oil and coconut oil. Of these unsaturated fatty acids and animal and vegetable oils, linoleic acid,
Linoleic acid, olive oil, safflower oil, grape oil and macadamia nut oil are particularly preferred.

The amount of the unsaturated fatty acid compounded in the emulsified cosmetic composition of the present invention is preferably 0.5 to 60% by weight, more preferably 1 to 40% by weight.

In the emulsified cosmetic composition of the present invention, purified water, a pH adjusting agent, a preservative, a thickening agent, a moisturizing agent, and the above-mentioned unsaturated are added in addition to the above-mentioned essential components within a range not impairing the effects of the present invention. Oily ingredients other than fatty acids, fragrances, antioxidants, surfactants, ingredients commonly used in cosmetics such as organic / inorganic powders can be appropriately blended, and beauty essence, emulsion, cream, lotion, pack , Basic cosmetics such as cleansing; hair cosmetics such as hair styling products, shampoos and conditioners; makeup cosmetics such as foundations, mascaras and eyeliners.

[0015]

EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited thereto.

Production Example 1 Production of protein-phospholipid complex: The components shown in Table 1 below were thoroughly stirred with a homomixer,
It was made into a uniform suspension. Then, this was subjected to ultrasonic treatment for 30 minutes using an ultrasonic homogenizer. The treatment liquid was dried to obtain composites A, B and C.

[0017]

[Table 1]

Example 1 Complexes A to C of the protein phospholipid obtained in Production Example 1 and soybean lecithin (PC-60), polyoxyethylene (20 E.O.) sorbitan monooleate (Tween 80) as comparative control samples. And N-stearoyl glutamate sodium were used to prepare an emulsion, and the oil phase was separated and the particle size of the emulsion droplets was measured. (Preparation method) Of the components shown in Table 2 below, components 1 to 6 and components 11 to 13 are uniformly mixed and heated, and then heated with stirring with a homomixer (3,000 rpm). After 10 was added, the mixture was cooled to obtain an emulsion.

[0019]

[Table 2]

(Evaluation method) Particle diameter of emulsified droplets immediately after emulsification (measured by MODEL N-4 manufactured by Coulter Counter)
Then, the state of separation of the oil phase after observing the emulsion at room temperature for 1 week was observed. The results are shown in Table 3.

[0021]

[Table 3]

Example 2 In the above Table 2, an emulsion was prepared in the same manner as in Example 1 except that 0.2% by weight of purified water was replaced with xanthan gum. Items 1'-3 '
And comparative products 1'to 4'corresponding to the comparative products 1 to 4 were obtained.
An actual use test was conducted on these. (Evaluation method) A sensory evaluation was carried out by 20 professional panels according to the following criteria regarding the moist feeling of the skin and the flexibility of the skin after the use of the emulsion. The results are shown in Table 4. ⊚: 15 or more people out of 20 were good. △: 10 or more people out of 20 were good .: 5 or less people out of 20 were good.

[0023]

[Table 4]

Example 3 Emollient Emulsion: Of the components shown in Table 5 below, components 1 and 2 and components 4 to 9 were uniformly mixed and heated, and then heated in advance with stirring with a homomixer (3,000 rpm). After the added ingredient 3 was added, the mixture was cooled to obtain an emollient emulsion (invention product 4).

[0025]

[Table 5]

Example 4 Emollient cream: Of the ingredients shown in Table 6 below, ingredient 1 and ingredients 5 to 9 were uniformly mixed and then heated, and heated in advance while stirring with a homomixer (3,000 rpm). After adding components 2-4,
After cooling, an emollient cream (Product 5 of the present invention) was obtained.

[0027]

[Table 6]

Example 5 Serum: Of the ingredients shown in Table 7 below, ingredients 1 and 3 to 8 were uniformly mixed and heated, and then heated and dissolved while stirring with a homomixer (3,000 rpm). The component 2 was added and then cooled to obtain a beauty essence (invention product 6).

[0029]

[Table 7]

Example 6 White turbid lotion: Of the components shown in Table 8 below, component 1 and components 4 to 7 were uniformly mixed and heated, and stirred with a homomixer (3,000 rpm).
The component 2 which had been heated in advance was added and then cooled to obtain a cloudy lotion (product 7 of the present invention).

[0031]

[Table 8]

[0032]

As described above, the emulsified cosmetic composition of the present invention is
Stable contains unsaturated fatty acids, "moisturizing skin",
It has excellent usability such as "softness of skin".

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Midori Hirobe 48-18 Sakaemachi, Kita-ku, Tokyo Kose Research Institute Inc. (72) Inventor Yuki Asano 48-18 Sakaemachi, Kita-ku, Tokyo Kose Co., Ltd. In the laboratory

Claims (1)

[Claims] 1. An emulsified cosmetic containing unsaturated fatty acids, wherein a complex of protein and / or its hydrolyzate and phospholipid is mixed as an emulsifier.