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.

Glycolic acid can remove the very top layer of skin cells without the need for scrubbing, which can cause irritation. It is also usefulTrusted Source in treatments for acne, hyperpigmentation, and the visible signs of aging.

However, as with all chemical exfoliants, using glycolic acid too frequently, at too high a concentration, or incorrectly can result in skin irritation or damage.

In this article, we discuss glycolic acid in detail, including its properties, benefits for the skin, and potential side effects. We also suggest how to choose a glycolic acid product and when to contact a doctor.