JPH09249523A - Skin cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a new skin cosmetic containing an extract of a specific vegetable belonging to the family Leguminosae and having excellent skin- beautifying effect to improve the dry feeling, poor luster, crease, chapped skin, etc. SOLUTION: This skin cosmetic contains an extract of Bauhinia variegata (alias Yoteiko) which is a small tall tree belonging to the genus Bauhinia, family Leguminosae native to Southeast Asia. The extraction solvent is a water-soluble organic solvent such as methanol, 1,3-butylene glycol or acetone or a hydrated water-soluble organic solvent. The amount of the extract of Bauhinia variegata is preferably 0.001-10wt.%, especially 0.01-5wt.% based on the total skin cosmetic. The skin cosmetic is e.g. beauty wash, milky lotion, cream, pack, foundation or lipstick.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel skin cosmetic, and more specifically, to provide a skin cosmetic excellent in beautiful skin effect by improving dry feeling, insufficient gloss, fine wrinkles and rough skin.

[0002]

2. Description of the Related Art Conventionally, skin cosmetics have been blended with various animal and plant extracts or various compounds for the purpose of preventing rough skin and improving wrinkles. For example, animal and plant extracts include placenta extract, extract such as yokuinin, gougon, and bukuro (JP-A-57-31604, JP-A-59-73509, JP-A-60-78).
Compounds include tranexamic acid, retinol derivatives and the like (see JP-A-4-154710 and JP-A-2-59518).

[0003]

However, as mentioned in the above examples, various types of animal and plant extracts and various compounds have been applied to the skin cosmetics provided so far. There are few such compounds exhibiting a significant effect, and those having a certain degree of effect as a compound have such drawbacks that they are so irritating that they cause dermatitis and that continuous use is difficult.

[0004] The present invention has been made in view of such circumstances, and is excellent in a beautiful skin effect by improving dry feeling, lack of luster, fine wrinkles and rough skin on the skin, and a safety that can sufficiently withstand long-term use. An object of the present invention is to provide a skin cosmetic having properties.

[0005]

As a result of intensive studies to solve the above problems, the present inventor has found that an extract obtained from a specific plant belonging to the legume family has an excellent skin-beautifying effect on the skin. In addition, they have found that there is no safety problem during use, and have completed the present invention based on such findings.

That is, the present invention relates to a skin cosmetic which is characterized by containing an extract obtained by extracting from Firizoshinka with a water-soluble organic solvent or a water-containing water-soluble organic solvent.

Hereinafter, the present invention will be described in detail.

[0008] Firstly, the filisocinca (scientific name: Bauhinia variegata) applied to the present invention is a small Takagi tree belonging to the genus Anopheles genus of the legume family native to Southeast Asia. Up to now, it has been known to use flowers for medicinal purposes for hepatitis, pneumonia, etc., but it has never been practically applied from the external point of view, and an example of verifying the skin-beautifying effect on the skin is also available. It was not found at all, and was first discovered by the present inventor.

Next, in order to obtain the extract according to the present invention from the above-mentioned filisocinca, the plant is dried or ground as it is, and the extract solvent is used, for example, a monohydric alcohol such as methanol, ethanol, propanol or butanol.
Polyhydric alcohols such as 1,3-butylene glycol and propylene glycol, or water-soluble organic solvents such as acetone, tetrahydrofuran and dioxane, or the above monohydric alcohols, polyhydric alcohols, acetone, tetrahydrofuran and dioxane are preferably 50% by weight. Extraction using a water-containing water-soluble organic solvent containing the above, further using a water-insoluble organic solvent such as hexane, heptane, cyclohexane, and ethyl acetate, preferably using a water-soluble organic solvent or a water-containing water-soluble organic solvent. good.

As a concrete method, filisocinka 1
00g is digested and extracted with 0.5 to 5 liters of extraction solvent at room temperature to the boiling point of the extraction solvent at room temperature for 7 to 10 days and at heating for 4 to 8 hours once or twice. Combine these extracts,
After suction filtration, the mixture is concentrated under reduced pressure to remove the solvent, and a viscous or dried extract is obtained. The extract thus obtained is dissolved or dispersed and diluted with an appropriate solvent or the like, and then blended into a base to obtain the skin cosmetic of the present invention.

The content of the filisocinca extract according to the present invention is preferably 0.
001 to 10% by weight, particularly preferably 0.01 to 5% by weight. If the content is less than 0.001% by weight, the effects intended in the present invention will not be sufficiently exhibited.

Further, in addition to the above-mentioned filisocinca extract, the skin cosmetics of the present invention may optionally contain various components and additives used in ordinary skin cosmetics, such as inorganic pigments, organic pigments and inorganic pigments. Powder, organic powder, hydrocarbons, silicones, esters, triglycerides, lanolins, waxes, waxes, animal and vegetable oils, surfactants, polyhydric alcohols, sugars, vitamins, amino acids, oxidation Inhibitors, preservatives, fragrances, thickeners, UV protectors, alcohols, pH adjusters, water and the like can be added.

As the skin cosmetic of the present invention, various dosage forms,
Examples thereof include lotions, emulsions, creams, packs, foundations, lipsticks, etc., which are prepared according to a conventional method.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Here, an example of production of a filisocinca extract according to the present invention is shown. Production Example 1. 70 g of dried whole grass of finisoshinka
% L of 1% ethanol at room temperature for 10 days, extract the residue with filter paper, evaporate the filtrate to dryness,
An extract was obtained. (Yield 3.1%)

Manufacturing Example 2. Dried filthy shinka 1
00g is immersed in 1 liter of ethanol, transferred to a Soxhlet extractor, and subjected to warm extraction for 8 hours. After cooling, the residue was filtered off with filter paper, the filtrate was evaporated to dryness,
An extract was obtained. (Yield 3.9%)

Production Example 3. Dried filthy shinka 1
00g is immersed in 1 liter of acetone, transferred to a Soxhlet extractor, and subjected to warm extraction for 8 hours. After cooling, the residue was filtered off with filter paper, and the filtrate was evaporated to dryness to obtain an extract. (Yield 2.8%)

Production Example 4. Dried filthy shinka 1
00g is immersed in 1 liter of butanol, transferred to a Soxhlet extractor, and subjected to warm extraction for 8 hours. After cooling, the residue was filtered off with filter paper, the filtrate was evaporated to dryness,
An extract was obtained. (Yield 2.5%)

Production Example 5. Dried filthy shinka 1
00 g is immersed in 1 liter of an extraction solvent of propylene glycol: distilled water = 1: 1, transferred to a Soxhlet extractor, and subjected to warm extraction for 8 hours. After cooling, the residue was filtered off with filter paper, and the filtrate was evaporated to dryness to obtain an extract. (Yield 2.0%)

Production Example 6. Dried filthy shinka 1
00 g was immersed and extracted with 1 l of ethyl acetate at room temperature for 10 days, the residue was filtered off with filter paper, and the filtrate was evaporated to dryness to obtain an extract. (Yield 1.8%)

Next, in order to demonstrate how the skin cosmetic composition of the present invention is excellent in terms of the skin-beautifying effect, an actual use test was conducted using the lotion shown in Example 1 below, and the effect was evaluated. confirmed. As comparative products, a lotion (Comparative product 1) prepared by substituting the placenta extract (commercial placenta extract) for the finisosinca extract in the lotion of Example 1 and the finisosinca extract in lotion of Example 1 described below were used. Was used (comparative product 2) after removing (increasing the amount of water). The test method is as shown below.

(Test Method) Seventy-five adult Japanese women with dry skin were randomly assigned to three groups (A to C) of 25 persons each.
Group). A lotion of the present invention is applied to the face of group A, and B
The lotion of Comparative Product 1 was applied to the face of the group and the lotion of Comparative Product 2 was applied to the face of Group C for 4 weeks. After 4 weeks, comparisons between groups were made on the improvement of various evaluation factors and the status of spontaneous deterioration. For evaluation of the rough skin condition, the stratum corneum was isolated from the face skin by a tape stripping method, and the degree of delamination was determined by optical microscope observation of the stratum corneum according to the method described in JP-A-63-113358. The presence or absence of nuclear cells was evaluated on a 5-point scale. The results are shown in Tables 1 and 2.

[0022]

[Table 1]

[0023]

[Table 2]

As shown in the results of Tables 1 and 2, the lotion of the product of the present invention gave good results over all the evaluation items as compared with the lotion of the comparative product, in particular, improved dry feeling, It was proved that the rough skin was remarkably improved and the skin-beautifying effect was excellent. In addition, as an opinion other than the above evaluation factors, it was also clarified that the cosmetic of the present invention had no adverse effects on safety such as irritation and skin irritation during use.

[0025]

EXAMPLES Examples of the present invention will be shown below. The mixing ratio is part by weight.

Example 1. Lotion (A) Purified water 78.89 Glycerin 5.0 Propylene glycol 4.0 (B) POE (20) Sorbitan monolaurate 1.5 POE (20) Lauryl ether 0.5 Ethanol 10.0 Firysocinca extract (Production Example 2) 0.01 Perfume 0.1

(Preparation Method) The components of (A) are combined and dissolved at room temperature. On the other hand, each component of (B) is also dissolved at room temperature, and is added to (A) formulation and solubilized.

Example 2. Emulsion (A) POE (20) hydrogenated castor oil 1.5 Coconut oil fatty acid monoglyceride 1.0 Oleic acid triglyceride 7.5 (B) Glycerin 2.5 Phyllisosinka extract (Production Example 1) 1.0 Purified water 86 .3 (C) Fragrance 0.2

(Preparation method) The ingredients of (A) are combined, heated and mixed to 70 ° C. Combine each component of (B) and add 7
Heat and mix at 0 ° C, add the (A) formulation to this, emulsify,
Add (C) while cooling.

Example 3. Hand cream (A) Vaseline 18.0 Cetanol 8.0 POE (20) Oleyl ether 1.4 Sorbitan monostearate 0.8 (B) Preservative 0.3 Firisocinca extract (Production Example 4) 0.5 Refined Water making 70.8 (C) Fragrance 0.2

(Preparation Method) The same method as in Example 2 was used.

Example 4. Cream (A) POE (30) Cetyl ether 2.0 Glycerin monostearate 10.0 Liquid paraffin 10.0 Vaseline 4.0 Cetanol 5.0 Preservative 0.2 (B) Propylene glycol 10.0 Firysocinca extract (Production Example 5) 2.0 Purified water 56.8

(Preparation Method) Combine the components of (A) and
Heat to 0 ° C. Combine the components of (B) and heat to 80 ° C. While stirring the prescription of (A), the prescription of (B) is added thereto to stir and emulsify, and then cooled.

Example 5 Packing material (A) Polyvinyl alcohol 15.0 Purified water 40.0 (B) Bisabolol 0.5 γ-tocopherol 0.02 Ethanol 4.0 Phyllisosinka extract (Production Example 3) 4.0 POE (8) Polyoxypropylene glycol (55) 3.0 Purified water 33.48

(Preparation method) (A) is dispersed and dissolved at room temperature. (B) is added thereto and uniformly dissolved.

Example 6 Gel Cosmetic Oil (A) Sucrose Fatty Acid Ester 5.0 (Daiichi Kogyo Seiyaku DK Ester F-160) (B) 1,3-Butylene Glycol 10.0 Glycerin 24.0 Purified Water 4.5 Antiseptic 0.3 (C) Liquid paraffin 20.0 Olive oil 30.0 2-Ethylhexanoic acid triglyceride 5.0 Firisoshinka extract (Production Example 6) 1.0 (D) Fragrance 0.2

(Preparation method) Combine the components of (B) and
Heat to 0-80 ° C. and dissolve (A) in this. To this, the prescription of (C) is added, and when cooled to 40 ° C., (D) is added and then cooled.

[0038]

According to the present invention, the beautiful skin effect such as improvement of the skin condition such as rough skin, lack of luster, fine wrinkles, etc. is remarkably superior to conventionally known skin roughening agents and the like. Needless to say, it can be used without adverse effects on safety.

Claims (2)

[Claims] 1. A skin cosmetic containing an extract of filisocinca. 2. The skin cosmetic according to claim 1, wherein the extract is extracted with a water-soluble organic solvent or a water-containing water-soluble organic solvent.