JP3391955B2 - Skin cosmetic composition - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin cosmetic effective for preventing and improving aging symptoms such as skin wrinkles, roughness of texture, dryness, softness, dullness and tarmi, and prevention and improvement of rough skin symptoms. Is.

[0002]

2. Description of the Related Art In recent years, attention has been paid to the effects of preventing and improving aging symptoms such as promoting the turnover of the epidermis of α-hydroxy acid and improving skin flexibility, and preventing and improving rough skin symptoms. Mixed aging-preventing cosmetics have been put on the market and there are reports on them (Japanese Patent Laid-Open No. 5-139947). It has also been disclosed that mugwort extract and mannenta mycelium culture have a very excellent skin moisturizing effect, an effect of preventing fine wrinkles, and an effect of healing rough skin (Japanese Patent Publication No. 57-5202, Japanese Examined Patent Publication No. 2-202). Two
2723).

[0003]

Various moisturizers and the like are used for improving skin quality such as aging symptoms and rough skin on the skin, but few of them show a better effect in a short period of time, and such skin cosmetics are used. Was desired to be developed.

[0004]

Means for Solving the Problems The present inventor has made extensive studies in order to achieve the above-mentioned object, and has mixed water-soluble polymer, lactic acid, mugwort extract and Ganoderma lucidum mycelium culture in a specific ratio. The inventors have found that in skin cosmetic compositions having a pH of 3 to 7, the effects of improving skin quality such as aging symptoms and rough skin are synergistically recognized in a shorter period than when they are individually blended, and the present invention has been completed.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The α-hydroxy acid used in the present invention is not particularly limited as long as it is a known one, but glycolic acid, lactic acid, malic acid, tartaric acid and citric acid are particularly preferable, and particularly, Lactic acid is preferred. One or more of these α-hydroxy acids can be blended, and the blending amount is 3 to 12% by weight, and particularly preferably 3 to 10% by weight, based on the total amount of the composition. . If the blending amount is less than 3% by weight, the skin quality improving effect cannot be expected, and if the blending amount exceeds 12% by weight, further effects cannot be expected and skin irritation occurs, which is not preferable.

The water-soluble polymer used in the present invention is not limited as long as it is a known water-soluble polymer, but among them, xanthan gum, gellan gum, guar gum, hydroxypropylmethyl cellulose and propylene glycol alginate are preferable, and xanthan gum is particularly preferable. Is preferred. These water-soluble polymers can be blended alone or in combination of two or more, and the blending amount thereof is 0.
It is 1 to 5% by weight, and particularly preferably 0.3 to 2% by weight. If the content is less than 0.1% by weight, the effect of improving the skin quality cannot be expected, and if it exceeds 5% by weight, the feeling of use is impaired, which is not preferable.

The mugwort extract used in the present invention is a mugwort extract extracted with ethanol, water, 1,3-butylene glycol, propylene glycol and the like. These are soft gyoyo extract (manufactured by Ogi Pharmaceutical and Maruzen Pharmaceutical). ), Gayou soft extract powder (manufactured by Maruzen Pharmaceutical Co., Ltd.), Guyo extract No. 95 (manufactured by Nagaoka Fragrance) and the like are commercially available. In particular, the extract fraction containing a high amount of a polysaccharide obtained by the following production method is preferable because it has an excellent effect on improving the skin quality.

A method for producing this mugwort extract fraction containing a high content of polysaccharide will be described. The mugwort raw or dried product is extracted with 2 to 5 times the amount of water or an aqueous organic solvent. The obtained extract is directly concentrated under reduced pressure and subjected to the following operations. (1) Add an equal volume of n-butanol to the concentrated solution, shake well and remove the butanol transfer part. After repeating this operation several times, a large excess of lower alcohol is added to the aqueous layer to cause precipitation, which is filtered and washed with lower alcohol to obtain a purified precipitate containing a high content of polysaccharides. (2) Alternatively, a lower alcohol is directly added to the concentrated solution to generate a precipitate, which is filtered off, the obtained precipitate is dissolved again in a small amount of water, and alcohol is added to cause precipitation.
After repeating this operation a few times, it is washed with a lower alcohol to obtain a purified precipitate containing a high content of polysaccharides. The purified precipitate obtained by the method (1) or (2) is concentrated under reduced pressure to obtain a mugwort extract containing a high amount of a light brown to brown powdery polysaccharide.

The amount of mugwort extract used in the present invention is 0.001% to 5% by weight, and if it is less than 0.001% by weight, the effect of improving the skin quality is difficult to be recognized, and the amount is 5% by weight or more. However, no further effect is observed.

The mycelium culture of Ganoderma lucidum used in the present invention is a whole culture concentrate of mycelium produced by the method described in Japanese Patent Publication No. 2-22723 mentioned above, a culture concentrate obtained by separating mycelia, and separation. Mycelium or whole culture,
It is a culture solution, a concentrate thereof, or a solvent extract of isolated mycelium, and its content is in the range of 0.001% to 5% by weight. If the blending amount is less than 0.001% by weight, the skin quality improving effect is difficult to be recognized, and even if the blending amount is 5% by weight or more, no further effect is recognized.

In the composition of the present invention, when the pH is less than 3, skin irritation becomes high, and when the pH exceeds 7, there is not such a skin quality improving effect, and the pH of the composition is preferably 3 to 7.
In the present invention, in order to adjust the pH to 3 to 7, one or more basic compounds such as triethanolamine, potassium hydroxide and sodium hydroxide can be blended as an alkaline agent.

The composition of the present invention can be produced by a conventional method and can be used as a lotion, a gel or the like. In addition, known components can be appropriately added to cosmetics such as surfactants, oils, preservatives, antioxidants, ultraviolet absorbers, pigments, and fragrances, as long as the effects of the present invention are not impaired.

[0013]

EXAMPLES The present invention will be described in more detail with reference to examples. The present invention is not limited to these examples, and [%] indicates% by weight unless otherwise specified.

[0014]

[Table 1]

[0015] The skin cosmetic compositions of Example 1 and Comparative Examples 1 to 3 shown in Table 1 were prepared by a conventional method, and the degree of skin improvement was evaluated. The evaluation method is shown.

1. In the practical use evaluation examples and comparative examples, rough skin symptoms are noticeable 3
14 women in their 0s to 50s were used for 1 month, and changes in skin condition before and after use were evaluated. Wrinkles, dullness, tarmi, softness, dryness, and texture of the skin were used as indexes for improving the skin quality, and sensory evaluation was performed for each index. Table 2 shows the proportion of the panelists who "improved the skin quality" among the 14 persons, which were evaluated by two grades of "improved skin quality" and "not improved".

[0017]

[Table 2]

In Table 2, comparing Example 1 with Comparative Examples 1, 2, and 3, the synergistic effect of lactic acid, mugwort extract, and Ganoderma lucidum mycelium culture shows remarkable wrinkles one month after use.
Improvement of dullness, tarmi, softness of skin, and dryness of skin was observed.

2. Image analysis evaluation The texture (the area surrounded by the skin groove on the image) was evaluated by image analysis using a replica. Show the method. Create a replica of the application site of the panelist's example (comparative example),
This is a microscope (HI-SCOPE MODE
L KH-2200 MD2: manufactured by HIROK, and image analysis device (AVIO EXCEL: NIPPO)
Images captured in NAVIONICS) were analyzed and evaluated. The evaluation was made by labeling the number of textures within a certain area. Here, the larger the number of textures within a certain area, the better the skin quality. The results are shown in Table 3.

[0020]

[Table 3]

Also in Table 3, in Example 1, Comparative Example 1,
It was confirmed that the number of textures was remarkably increased one month after the use as compared with 2 and 3, and it was effective for improving the skin quality.

[0022]      Example 2 Lotion (pH 6.0)           Component quantity (%)   Xanthan gum 0.3   Glycerin 5.0   Propylene glycol 4.0   Mugwort extract 0.001   Ganoderma lucidum mycelium culture 0.001   Lactic acid 3.0   Triethanolamine pH 6 amount   Polyoxyethylene sorbitan monolauric acid                 Ester (20.EO) 1.5   Ethanol 8.0   Methyl paraoxybenzoate 0.1   Purified water Remaining amount         Total 100.0

[0023]    Example 3 Pack (pH 6.5)           Component quantity (%)   Hydroxypropyl methylcellulose 2.0   Glycolic acid 4.0   Mugwort extract 5.0   Ganoderma lucidum mycelium extract 0.001   Lactic acid 3.0   Potassium hydroxide pH 6.5   1,3-butylene glycol 3.0   Ethanol 8.0   Methyl paraoxybenzoate 0.1   Purified water Remaining amount           Total 100.0

[0024]    Example 4 Emulsion (pH 6.8)           Component quantity (%)   Carboxyvinyl polymer-0.15   Gua gum 0.15   Mugwort extract 0.001   Ganoderma lucidum mycelium culture 0.001   Citric acid 5.0   Potassium hydroxide pH 6.8   Glycerin monostearate 2.0   Decaglyceryl isostearate 1.0   Decaglyceryl stearate 2.0   White vaseline 1.0   Olive oil 6.0   Squalane 2.0   Methyl paraoxybenzoate 0.1   Perfume 0.15   Purified water Remaining amount   Total 100

[0025]

EFFECTS OF THE INVENTION According to the present invention, a water-soluble polymer, α-hydroxy acid, mugwort extract and Ganoderma lucidum mycelium culture are mixed in a specific range amount to give α-hydroxy acid,
A skin cosmetic having an excellent effect of improving the skin quality in a short period of time can be provided as compared with a case where the extract of mugwort and the mycelium culture of Ganoderma lucidum are individually mixed.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-223216 (JP, A) JP-A-5-962 (JP, A) JP-A-5-194175 (JP, A) JP-A-6- 321768 (JP, A) JP-A-6-345636 (JP, A) JP-A-8-40882 (JP, A) JP-A-9-52814 (JP, A) JP-A-5-246820 (JP, A) JP 61-91113 (JP, A) JP 55-127317 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61K ^7/ 00-7/50 CA (STN)

Claims (4)

(57) [Claims] 1. A type or 2 type of (A) α-hydroxy acid
One or more kinds of (B) water-soluble polymer,
(C) Artemisia extract and (D) Ganoderma lucidum mycelium culture blended, skin cosmetic composition having a pH of 3 to 7 2. The skin according to claim 1, wherein (A) is selected from glycolic acid, lactic acid, malic acid, tartaric acid and citric acid, and the amount thereof is 3 to 12% by weight based on the total amount of the composition. Cosmetic composition. 3. (B) is xanthan gum, gellan gum, guar gum, hydroxypropylmethyl cellulose,
Selected from propylene glycol alginate,
The skin cosmetic composition according to claim 1, wherein the blending amount is 0.1 to 5% by weight. 4. The skin cosmetic composition according to any one of claims 1, 2 and 3, wherein (A) is lactic acid and (B) is xanthan gum.