Glycolic acid is a kind of alpha hydroxy acid (AHA) that exfoliates skin, improving skin radiance and texture. The Ordinary Glycolic Acid 7% Toning Solution contains a derivative of Tasmanian Pepperberry, an ingredient that helps to reduce irritation due to acid use. The formula is further boosted by ginseng root and aloe vera for radiance and soothing benefits. Note that Tasmanian Pepperberry is of plant origin and varies in color seasonally. Color variation may be apparent in the formula from time to time, which is normal and not a cause for alarm. Size: 240 mL To use: Apply after cleansing. Be careful not to use with other acids as it may cause overexfoliation.