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.

Folate and folic acid are two forms of vitamin B9. Folate refers to the natural form of vitamin B9 found in foods, like leafy green vegetables. Folic acid is the synthetic (man-made) version found in ...