*useapply glyco-a 12% every other day, preferably on the evening, during the first 2 weeks, and every day after this period. it could be used with others cosmetic creams.*propertiesthanks to its high concentration in glycolic acid, glyco-a 12%: 1. reduces the wrinkles, exfoliating the epidermis layer and activating the cells self-renewal2. smoothes the skin3. lightens the tone and tightens the pores