This lightweight lotion is ideal for exfoliating surface skin cells to smooth and refine. Can be used alone or under makeup. This lotion contains 30% glycolic compound* and should only be used after skin has adjusted to levels I and II.. * Glycolic Compound is a complex, pH-balanced mixture of glycolic acid, ammonium glycolate, purified water, and higher-molecular-weight oligomers of glycolic acid, with an approximate activity level of 60%, and is designated on product labels as the ingredients glycolic acid and ammonium glycolate.