There are various types of chemical peels with different ingredients to treat many types of skin condition. How skin responds will vary depending on those ingredients. AHA (alpha hydroxy acid), lactic or glycolic acid peels tend to be gentler on the skin and may be a good treatment for sensitive skins with minor skin concerns. For concerns such as pigment or discoloration, wrinkles or fairly superficial blemishes or scarring, a stronger peel is usually required for the best outcome. Acne typically receives best results when salicylic acid has been used for the peel.