In this treatment, a chemical solution using glycolic, salicylic, lactic or citric acid is applied to the skin, causing it to loosen and eventually peel off. The regenerated skin is smoother, less wrinkled and has a healthier, even tone. Peels can be performed on the face, neck or hands. They can be used to reduce fine lines, age-spots, freckles or melasma. They can also treat certain types of acne and improve the appearance of mild scarring.