... ursolic acid has a decentEffect on anti-aging, anti-freckle by its anti-oxidant activity. It can prevent the appearance ... of wrinkles and age spots by restoring the skin's collagen bundleStructures and its elasticity. As ... ---white powderSpecification:10%, 15%, 20%, 25%, 30%, 40%, 60%, 90%, 95%, 98%Testing ways: HPLCFunction:A. Antimicrobial activity. Not only inhibits G ...