Chemical facial peels are a cosmetic treatment that removes the top layers of damaged skin to reveal smoother, younger-looking skin underneath. There are different types of peels that vary in strength from superficial peels using alpha hydroxy acids to deep peels using phenol. A chemical peel can improve the appearance of acne scarring, sun damage, age spots and fine lines. The treatment involves applying chemicals to the skin that cause it to peel and shed over the course of a week. Possible side effects include temporary redness, swelling or discoloration but risks like scarring and infection must also be considered.