Brighten and refine your complexion with The Ordinary Mandelic Acid 10%, a solution that provides superficial dermal peeling gentler than other Alpha Hydroxy Acids (AHAs).With a larger molecular weight than other AHAs (152.1 daltons compared to Glycolic Acid's 76.0 daltons), Mandelic Acid penetrates slower into skin, which provides a gentler experience and makes it suitable for all skin types, even the most sensitive skin. Helping to brighten and unify, the formula will promote a fresh and refined-looking complexion.