Method for skin care
A method for skin care includes administering the water insoluble fraction of Astragalus membranaceus , or astragaloside compounds thereof to a subject in need thereof at an effective amount for improving skin texture, reducing wrinkles, UV protection, and/or providing an anti-aging effect.
1. A method for enhancing collagen expression in skin cells, comprising topically administering a composition, including a water insoluble fraction of Astragalus membranaceus as the active ingredient, to a skin area in a subject in an amount effective for enhancing collagen expression, wherein the water insoluble fraction of Astragalus membranaceus is prepared by a process including:
extracting Astragalus membranaceus with alcohol to obtain an alcohol extract;
dispersing the alcohol extract, in dry form, in water and n-butanol at a volume ratio of 1:1; and
collecting the water insoluble fraction.
2. The method according to claim 1 , wherein the composition is a cosmetic cream.
3. The method of claim 1 , wherein the composition further comprises at least one cosmetically acceptable carrier.
4. The method of claim 1 , wherein the composition is administered to a healthy subject.
5. The method of claim 1 , wherein the skin area is a facial skin area.
6. The method of claim 4 , wherein the skin area is a facial skin area.