Salicylic acid, the primary constituent of Salicylic Acid, is a topical medication used to treat and prevent pimples. It may also be used to treat certain skin disorders such as rashes, dandruff, corns, warts of the hands or feet, psoriasis, etc. This medicine should not be used to treat genital warts, warts on the face, warts with hair growing from them, warts in the nose or mouth, moles, or birthmarks.