acids

Chemical peels use a variety of substances to damage the skin in order to exfoliate the outer layers. The depth of the peel depends on the type of chemical, its concentration, and the length of time it remains on the skin. Glycolic acid, lactic acid, salicylic acid, trichloroacetic acid (TCA), and phenol are some of the chemicals used in cosmetic peels. There is an improvement over the skin's pre-peel state after the skin heals. Mild peels may be repeated every few weeks for the desired effect. Deeper peels may cause some initial discomfort as well as swelling and crusting of the face. Moderate or deep facial peels can be repeated at six- to 12-month intervals.