After trying one of Massage Envy’s chemical peels for the first time, I used four PCA Skin products to help extend my glow ...

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.

Lactic acid is an over-the-counter chemical exfoliant that comes from the fermentation of lactose — a carbohydrate found in milk. It's a popular ingredient in numerous skin care products nowadays. But ...