JPH04243807A - Cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic capable of coloring in a temperature region of human skin, capable of keeping perfect moisture-retaining property while retaining priority on appearance and further having effectiveness of beauty by making cholesteric liquid crystal retain using an extract of Ficus awketosang Makino as a medium. CONSTITUTION:A cosmetic obtained by making cholesteric liquid crystal retain (e.g. liquid crystal composition obtained by blending two or more kind of ester cholesteryl oleate, cholesteryl butylate, etc., with cholesteryl 12-hydroxystearate) using an extract of Ficus awketosang Makino (obtained by drying fruit of a plant named as KANTEN ITABI), preferably further containing glycerin. Water extract of Ficus awketosang Makino is used at an amount of 0.1-5.0wt.%, expressed in terms of dried weight or 3-10wt.%, when glycerin is blended. Coloring of the liquid crystal is made clear by using a liquid containing Ficus awketosang Makino. Thereby feeling in use is not lowered and moisture- retaining property can be enhanced.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is a unique makeup product that has good moisturizing properties, a moist feeling, and whitening properties, eliminates rough skin, and develops color as a liquid crystal in the human skin temperature range of 0°C to 30°C. Regarding fees.

0002

BACKGROUND OF THE INVENTION Many patent applications, including those by the present inventors, have already been filed regarding cosmetics containing liquid crystals. In JP-A-57-32211, cholesteric liquid crystal formulations are disclosed. It is a formulation of cholesteric liquid crystal compounds containing at least two higher fatty acid esters of cholesterol suspended in an oily carrier or an aqueous emulsion and which produces various colors when subjected to shear action.

[0003] As cholesteric esters, there are many fatty acid esters of cholesterol.
Preferred esters include cholesteryl pelargonate, cholesteryl benzoate, cholesteryl
Cinnamate, cholesteryl adipate, cholesteryl p-nitrobenzoate, cholesteryl
3,4-dinitrobenzoate, cholesteryl 2-
Ethylhexanoate, and cholesteryl chloride are mentioned. This publication also discloses that because cholesteric substances are usually liquid crystals of cholesterol, these substances are easily absorbed by the skin and are preferred ingredients for cosmetic formulations.

[0004] Japanese Patent Application Laid-open No. 61-57838 discloses 12-
The present invention is a cosmetic containing an esterification product of an intermolecular oligoesterified carboxylic acid of hydroxystearic acid and/or ricinoleic acid and a sterol, and one or more of the products.

Although it is related to 12-hydroxystearic acid, it is an ester of an intermolecular oligoesterified carboxylic acid and a sterol, and cholesteryl 12-
Not hydroxystearate. It also exhibits excellent affinity and texture for the skin, and has emulsifying, water-retaining, and moisturizing properties that are far superior to conventional sterol esters, making it suitable as an oil for cosmetics and external use. However, it does not utilize the color development properties of liquid crystals.

JP-A No. 62-53910 discloses that a liquid crystal structure in a one-phase region obtained from a hydrophilic nonionic surfactant, a water-soluble substance having a hydroxyl group in the molecule, an oil component, and water is used as a base. A liquid crystal type oil-based cosmetic is disclosed. This method consists of a hydrophilic nonionic surfactant such as a polyoxyethylene sorbitan fatty acid ester or an ethylene oxide derivative of a glycerin fatty acid ester, a water-soluble substance having a hydroxyl group in the molecule such as glycerin or sorbitol, an oil component, and water in one phase. It has no relation to cholesterol esters, and is only used to improve the feel of cosmetics, and the coloring properties of liquid crystals are not utilized.

[0007] Japanese Patent Application Laid-Open No. 62-96585 also discloses HLB
It is a lamellar liquid crystal structure obtained from an ethylene oxide adduct of 10 or more Guerbet type alcohols, a trihydric or higher polyhydric alcohol, an oil component, and water. This also improves the feel of cosmetics, and does not utilize the coloring properties of liquid crystals.

[0008] JP-A-63-230617 discloses a cosmetic containing one or more cholestanol derivatives and carboxymethyl chitin. The examples disclose cosmetics containing cholesteryl-12-hydroxystearate and cholesteryl oleate, which also have a smooth and rich feel, blend well with the skin, and have a silky feel. It is a cosmetic with a long-lasting moisturizing effect and does not utilize the coloring properties of liquid crystals.

The present applicant previously disclosed in Japanese Patent Application Laid-Open No. 1-246209 that esters of cholesterol and two or more fatty acids selected from the group consisting of oleic acid, butyric acid, lauric acid, decanoic acid, and nonanoic acid, particularly cholesteryl 12 - A cosmetic containing liquid crystal, which is obtained by dispersing a liquid crystal compound containing hydroxystearate in a transparent or translucent cosmetic, was provided.

[0010] The present applicant also disclosed in Japanese Patent Application Laid-Open No. 2-223506 a cosmetic product in which a liquid crystal composition containing cholesteryl heptanoate and cholesteryl 12-hydroxystearate is dispersed in a transparent or translucent cosmetic product. provided.

[0011] Also, a liquid crystal composition containing at least one selected from the group consisting of cholesteryl heptanoate, cholesteryl oleate, cholesteryl butyrate, cholesteryl laurate, cholesteryl decanate, and cholesteryl nonanoate. To provide a cosmetic in which a substance is dispersed in a transparent or translucent cosmetic.

[0012] These liquid crystal compositions are usually kept in a transparent or translucent medium to maintain their appearance, but contain moisturizing agents such as glycerin, 1,3-butylene glycol, decaglycerin monostearate, and propylene, which have hydroxyl groups in their molecules. In addition to compounds such as glycols, synthetic products such as water, liquid paraffin, and carboxyvinyl polymers have been used up to now, and have no effect on the skin.

[0013]

[Problems to be Solved by the Invention] An object of the present invention is to provide a liquid crystal that is easily absorbed by the skin while retaining the superior appearance of liquid crystal, which produces color in the human skin temperature range. It is an object of the present invention to provide a cosmetic that achieves advanced utilization of cosmetics, maintains perfect moisturizing properties, and has efficacy such as whitening.

[0014]

[Means for Solving the Problems] One of the inventors of the present invention has previously proposed a cosmetic made by combining an extract of Ai-egg with water as its main component and glycerin (particularly Ganpei 2
-108924). They have also proposed a cosmetic containing an extracted substance obtained by extracting sweet eggs with water, ethanol, butanol, methanol, and polyhydric alcohol alone or in a mixture of two or more thereof (Japanese Patent Application No. 108925/1999).

The present inventors have discovered that the above-mentioned problems can be solved by using this egg extract as a medium for holding liquid crystals, and have completed the present invention. That is, the present invention is (1) a cosmetic containing cholesteric liquid crystals and an egg extract, and (2) a cosmetic containing glycerin as described in the preceding item (2).

[0016] The scientific name of the egg is Ficus awkeot.
Sang Makino is the dried fruit of a plant whose Japanese name is Sang Makino. The place of origin is a tall tree that grows naturally in the highlands of southern Taiwan, at an altitude of 1,000 to 2,000 meters.In Taiwan, this fruit is also tried in water.
It is commonly used as a soft drink with added sugar. In some cases, it is also used as a folk medicine for high blood pressure. Although it is known as a food in Japan, there is no precedent for its use in cosmetics.

[0017] When used as a cosmetic, an extract containing water as the main component, or an extract containing water, ethanol, butanol, methanol, or a polyhydric alcohol alone or in a mixture of two or more, has excellent moisturizing properties. Furthermore, it was found that when used in combination with glycerin, the moisturizing properties were significantly increased.

Regarding moisturizing, there are two types: those based on oil-based raw materials such as liquid crystal, and those based on aqueous raw materials such as glycerin and 1,3-butylene glycol. Their mechanisms of action are different, and both are necessary for cosmetics.

The present inventors have discovered that this egg extract has moisturizing properties and has a synergistic effect as a sticky agent that maintains the dispersion of liquid crystals. Ai egg extract assists the function of liquid crystals as a humectant for aqueous raw materials, and can improve moisturizing properties without reducing the feeling of use.

[0020] The liquid crystal composition is a liquid crystal composition in which cholesteryl 12-hydroxystearate is blended with two or more esters selected from the group consisting of cholesteryl oleate, cholesteryl butyrate, cholesteryl laurate, cholesteryl decanoate, and cholesteryl nonanoate, and cholesteryl linoleate. and cholesteryl 12-hydroxystearate.
The liquid crystal composition disclosed in the publication,

A liquid crystal composition containing cholesteryl heptanoate and cholesteryl 12-hydroxystearate, or at least one selected from the group consisting of cholesteryl heptanoate, cholesteryl oleate, cholesteryl butyrate, cholesteryl laurate, cholesteryl decanoate, and cholesteryl nonanoate. The liquid crystal composition disclosed in Japanese Unexamined Patent Publication No. 2-223506 by the applicant containing seeds can be suitably used because it develops color as a liquid crystal in the human skin temperature range.

A liquid crystal composition of cholesteric liquid crystal and an extract containing sterol obtained from shellfish meat, which is currently being filed by the present applicant in Japanese Patent Application No. 2-232573, can also be suitably used.

[0023] For Ai-egg, it is more effective to use a sticky agent, so extraction should be carried out using water at least 80% by weight and the remainder using a hydrophilic organic solvent such as ethanol, methanol, or acetone as the extraction liquid. Preferably. As a raw material for cosmetics, an extract using a mixed solvent of 80% by weight or more of water and ethanol is most suitable.

[0024] Ai egg extract is characterized by containing a whitening ingredient as an active ingredient, but if you want to completely extract this whitening ingredient, after water extraction, extract it again with a hydrophilic organic solvent such as ethanol, methanol, or acetone. Better to extract it. Ethanol is preferred as a cosmetic raw material.

[0025] As for the extraction method, Aitamago, which is made by drying the fruit of the Agariculata plant, is soaked in water to swell, and then squeezed with gauze or the like to dissolve the mucilage into the water. Of course, there is no problem in extracting mucus using other methods. If it is desired to completely extract the whitening component as described above, it is preferable to extract with water and then re-extract with alcohol such as ethanol.

Research has shown that the viscosity of this extract is caused by pectin, and although it is known that pectin is insoluble in alcohol and other organic solvents, alcohol-soluble components The present inventors have discovered that the skin also contains amino acids and ingredients effective for skin whitening. As for the temperature during extraction, room temperature is sufficient and there is no particular need for heating, and the viscosity of the product changes depending on the degree of heating.

[0027] The amount of water extract of Ai egg is 0.05 to 5.0% by weight, especially 0.1 to 5.0% by weight in terms of dry weight.
．． 0% dry weight is preferred. When blending glycerin, it is 1 to 20% by weight, preferably 3 to 10% by weight.

[0028] If the content of the egg water extract is less than 0.05% by weight, the viscosity will be insufficient and the synergistic effect with the liquid crystal will be insufficient.
If it exceeds 5.0% by weight, the effect is saturated and it is not economical. If the glycerin content is less than 1% by weight, the effect of improving moisturizing properties will be small, and if it exceeds 20% by weight, it will become sticky and the skin will feel hot during use, which is not preferable.

[0029]

EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited to these Examples. (Example 1)

Weight part A Cholesteryl 12-hydroxystearate 3.0 Cholesteryl heptanoate
3.0 Cholesteryl Oleate 2.0
cholesteryl butyrate
1.0 B Ai-egg water extract (converted to dry weight)
5.0 Purified water

(Example 2)

Weight part A Cholesteryl 12-hydroxystearate 3.0 Cholesteryl oleate
2.0 Cholesteryl Butyrate 1
．． 0 Sterols extracted from pearl oyster B
Ai-egg water extract (converted to dry weight)
1.0 Glycerin

5.0 Carboxyvinyl polymer (neutralized) 1.0
purified water

(Example 3) Example 2 in which glycerin was replaced with water

(Comparative Example 1) The egg water extract of Example 1 was replaced with 1% by weight of carboxyvinyl polymer (neutralized) and 4% by weight of water.

(Comparative Example 2) The egg water extract of Example 2 was replaced with carboxyvinyl polymer.

Regarding the above examples and comparative examples, female 15
The face was divided into left and right parts and each was used for 3 months. The left and right sides were randomly combined and tested six times for each specimen. This total is shown in Table 1.

[0035]

[Table 1]

[0036]

Effects of the Invention Conventionally, a transparent or translucent synthetic product was used as a medium for a liquid crystal composition that develops color as a liquid crystal in the human skin temperature range, but instead of this, a transparent or translucent synthetic product is used. By using the liquid, the color of the liquid crystal became clearer. In addition to the oil-based raw materials for liquid crystals, aqueous raw materials are required to have a moisturizing effect, and egg extract helps the liquid crystal function as a moisturizing agent for this aqueous raw material, without reducing the feeling of use. , can improve moisturizing properties. Ai egg extract also has a whitening effect on the skin and is therefore excellent as an effective liquid crystal medium.

Claims (2)

[Claims] [Claim 1] A cosmetic containing cholesteric liquid crystal and Ai-egg extract. 2. The cosmetic according to claim 1, which contains glycerin.