Chemical peels Home A-Z Health Information Health Library A-Z Chemical Peels Overview A chemical peel, also addressed as derma peeling, is a non-invasive procedure to enhance the appearance of skin on the face, neck, back, and hands. During chemical peeling, the pH of the skin is altered by applying a specialised acid which is left on for a specific amount of time. The acid is then neutralised or washed off from the skin. The composition of chemicals used depends on the skin condition and desired results. A superficial peel is mild and only exfoliates the superficial layer of the skin, while a deep peel penetrates to the dermis and is indicated in cases of deep or treatment-resistant pigmentation.