A skincare cosmetic composition
AssigneeYang Sheng Tang (Shanghai) Cosmetic R&D Co., Ltd.
InventorsXiaowei ZHENG, Liu HU
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Abstract
The invention relates to a skincare cosmetic composition comprising birch sap, birch bark extract, and optional ingredients commonly used in skincare cosmetics, without water typically added as a separate component.
Claims17
1-11. (canceled)
A skincare cosmetic composition, comprising:
- (A) 30-99 wt % of birch sap,
- (B) 0.5 ppm-5 wt % of birch bark extract, calculated in terms of betulin, and
- (C) optionally, ingredients commonly used in skincare cosmetics,
- wherein the percentage is based on the total weight of the composition, and the skincare cosmetic composition does not comprise water typically added as a separate component.
A method for increasing the transdermal absorption of betulin, comprising adding birch sap to a skincare cosmetic composition comprising birch bark extract but no added water, wherein the birch bark extract comprises 0.05-99.95 wt % of betulin.
Use of a combination of birch sap and birch bark extract in a skincare cosmetic composition comprising no added water, wherein the birch bark extract comprises 0.05-99.95 wt % of betulin.
Dependencies are inferred from the claim text.