JPH08175956A - Skin-beautifying cosmetic - Google Patents

Abstract

PURPOSE: To obtain a skin-beautifying cosmetic effective for suppressing and improving the pigmentation of the skin by using an extract of SOUJUTSU (rhizome of Atractylodes lancea) as an active component. CONSTITUTION: This skin-beautifying cosmetic contains a liquid extract extracted from Atractylodes lancea (a plant of the family Composite) as an active component usually in an amount of 0.001-20wt.%, preferably 0.001-3wt.% in terms of dried solid. The extract is produced by pulverizing the whole grass or the leaf, stalk, rhizome, fruit, seed and/or flower of Atractylodes lancea or its dried product and extracting with a solvent (e.g. ethanol) at room temperature or under heating. The pigmentation suppressing effect can be improved by adding other conventional anti-inflammatory agent (e.g. allantoin), antioxidant (e.g. α-tocopherol), etc. It can be prepared in the form of O/W-type or W/O-type emulsified cosmetic, cream, cosmetic milky lotion, face lotion, oily cosmetic, pack, foundation, etc., by properly adding conventional cosmetic components.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a whitening cosmetic composition having an excellent action of suppressing and improving pigmentation of skin.

[0002]

2. Description of the Related Art In recent years,
Maintaining healthy and beautiful skin has become a serious concern for people of all ages. However, the skin is subtly affected by temperature, humidity, ultraviolet rays, aging, illness, stress, eating habits, etc. Therefore, various troubles such as deterioration of various functions of the skin and aging of the skin occur.

[0003] Stain, freckles and pigmentation on the skin after sunburn are caused by an increase in melanin pigment synthesized in the epidermis by melanocytes, and the pathogenic mechanism thereof is ultraviolet rays, female hormones and inheritance. Although it has been pointed out that the social factors are involved, it has not been fully clarified yet. Therefore, drugs for the purpose of suppressing the production of melanin or reducing existing melanin have been studied as whitening agents, and arbutin, kojic acid, vitamin C, licorice extract (JP-A-63-23809,
Japanese Unexamined Patent Publication No. 1-149706), and parentheses (Japanese Unexamined Patent Publication No. Sho 6-6)
4-16709), hydroxystilbene (JP-A-64-38009), 3-hydroxychromone (JP-A-55-111410, JP-A-55-1439).
08), isoflavones (JP-A-58-22500).
No. 4) is proposed. However, under the present circumstances, there are almost no substances that have excellent blending properties in actual cosmetics and have a high pigmentation-inhibiting effect, and conventional whitening agents are not sufficiently effective.

Therefore, an object of the present invention is to provide a whitening cosmetic composition which is effective in preventing and improving pigmentation on the skin.

[0005]

Under such circumstances, the present inventor has conducted extensive studies, and as a result, found that the soybean extract has an excellent pigmentation-inhibiting action, and completed the present invention. .

[0006] That is, the present invention provides a whitening cosmetic characterized in that it contains a soup extract as an active ingredient.

[0007] Soso, which is used in the present invention, is a plant belonging to the Asteraceae family, and is known to have sweating, diuretic, tonic, hypoglycemic action, etc., but it is not known at all to have a pigmentation inhibiting action. It was

The soybean extract used in the present invention is obtained by drying one or more parts (hereinafter referred to as "protocol") of whole grass or leaves, stems, rhizomes, fruits, seeds and flowers of soy sauce. Or, after crushing without drying, various solvent extract obtained by extracting with a solvent at room temperature or under heating, or by using an extractor such as a Soxhlet extractor, its diluted solution, its concentrated solution, Alternatively, the dried powder is included. It is preferable to use a rhizome extract as the soybean extract used in the present invention.

Examples of the solvent used for extraction include water, organic solvents and mixtures thereof, with organic solvents being particularly preferred. Preferred specific examples of the organic solvent include hydrocarbons such as petroleum ether, cyclohexane, toluene and benzene; halogenated hydrocarbons such as dichloromethane, chloroform and carbon tetrachloride; esters such as ether and ethyl acetate; ketones such as acetone. Alcohols such as butanol, propanol, ethanol, polyethylene glycol, propylene glycol, butylene glycol; pyridine and the like.

When, for example, aqueous alcohol is used as the organic solvent, the soybean extract can be obtained by subjecting the soybean extract to the extraction treatment at 3 to 70 ° C. The obtained Soso extract can be used as it is as an active ingredient of the whitening cosmetic composition of the present invention, and the extract is diluted, concentrated, or freeze-dried, and then prepared into powder or paste, and appropriately formulated. It can also be used. If necessary, it may be used after purification treatment such as deodorization and decolorization by a known method.

The blending amount of the above-mentioned active ingredients in the whitening cosmetic composition of the present invention is not particularly limited, but from the viewpoint of feel and color at the time of blending, it is usually 0.001 as a dry solid content (dry solid). It is preferably 20% by weight, and more preferably 0.001 to 3% by weight.

The whitening cosmetic composition of the present invention contains, in addition to the above essential components,
Known anti-inflammatory agents such as allantoin and glycyrrhizin, α
-By adding an antioxidant such as tocopherol or ascorbic acid, the effect of suppressing pigmentation can be improved. Further, oils generally used as cosmetic ingredients, moisturizers such as hyaluronic acid and ceramide, ultraviolet absorbers, alcohols, chelating agents, pH adjusters, preservatives, thickeners, pigments, fragrances and the like can be optionally used. It can be combined and compounded.

The whitening cosmetic of the present invention is not limited to general skin cosmetics but includes quasi drugs, medicated cosmetics and the like. The whitening cosmetic composition of the present invention can be used in various forms and applications, for example, oil / water type, water / oil type emulsified cosmetics, creams, lotions, lotions, oily cosmetics, packs, foundations and the like. .

[0014]

The whitening cosmetic composition of the present invention is excellent in the effect of suppressing pigmentation formation caused by irradiation with ultraviolet rays, and is therefore useful as a pigmentation-preventing cosmetic composition.

[0015]

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

Production Example 1 A method for producing a soybean extract: 1 kg of ground soybean rhizome was added to 5 liters of 70% ethanol at room temperature for 1 hour.
It was soaked for a week and the 70% ethanol-soluble component was extracted. The same operation was repeated for the residue obtained by separating the extract, and a total of 10 liters of extract was obtained. The solvent of this extract was distilled off and the residue was dried under reduced pressure to obtain 52 g of an extract.

Test Example 1 UV-on the back of a brown guinea pig
Effect of B on pigmentation: After brown hair of a guinea pig was shaved carefully with a hair clipper and a shaver, 1.
It was divided into eight 5 cm squares. Evaluation sample (2%
An ethanol solution (20 μl) was applied, and after 2 hours, the applied sample was wiped with ethanol and irradiated with ultraviolet rays in the UV-B region at twice the minimum erythema dose (MED). After UV irradiation, the evaluation sample was applied again. The above operation was repeated for 3 days. After that, samples (2% ethanol solution, 10
μl) was applied continuously for 1 week, and after 2 weeks, the amount of pigmentation was examined. As a control, a sample coated with only ethanol was tested in the same manner as the sample.

A color difference meter (CMS-12, manufactured by Murakami Color Co., Ltd.) was used for evaluation.
00) was used for measurement, and L was calculated from the obtained Munsell value.
^{* The} value was calculated, ΔL ^* was calculated according to the following formula, and the degree of pigmentation was compared. The larger the value of −ΔL ^*, the stronger the degree of pigmentation. The results are shown in Table 1.

[0019]

[Formula 1] ΔL ^* = (L ^* value 2 weeks after UV-B irradiation) −
(L ^* value before UV-B irradiation)

[0020]

[Table 1]

It can be seen from Table 1 that the soybean extract according to the present invention has an excellent pigmentation inhibiting effect.

The cosmetics shown in Examples 1 to 3 were prepared by a conventional method.

Example 1 Cream:

[Table 2] (Components) (% by weight) Soybean extract 0.2 Cholesterol 0.5 Cholesterol isostearate 1 Polyether-modified silicone 1.5 Cyclic silicone 20 Methylphenylpolysiloxane 2 Methylpolysiloxane 2 Magnesium sulfate 0.5 55% Ethanol 5 Carboxymethyl chitin 0.5 Ceramide 1.0 Perfume, pigment Micro purified water Residual amount meter 100.0

Example 2 Skin lotion:

[Table 3] (Components) (% by weight) Soybean extract 2 Glycerin monostearate 1 Ethanol 15 Propylene glycol 4 Isopropyl palmitate 3 Lanolin 1 Ceramide 0.5 Methyl paraoxybenzoate 0.1 Vitamin C 0.5 Perfume, pigment Micro Purified Water Fuel Gauge 100.0

Example 3 Packing agent:

[Table 4] (Components) (% by weight) Soybean extract 3 Polyvinyl alcohol 20 Glycerin 5 Ethanol 16 Perfume, pigment Micro purified water Residual amount meter 100

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Ichiro Tokimitsu 89-28 Takebayashi-cho, Utsunomiya City, Tochigi Prefecture

Claims (1)

[Claims] 1. A whitening cosmetic characterized in that it contains a soup extract as an active ingredient.