Glycolic acid is a substance that chemically exfoliates a person’s skin by dissolving dead skin cells and oils. Glycolic acid may also help boost collagen production, and support skin moisture.

A person wearing black gloves paints a translucent paste on the face of a person who lies back in a chair. Chemical peels are a popular skin-care treatment with a growing market. Credit: Alamy ...

Lactic acid is an ingredient commonly present in cosmetic products. It is an antioxidant and chemical exfoliant. It helps remove dead skin cells, smooth rough areas, and moisturize the skin. Lactic ...