Mandelic acid is a type of gentle alpha hydroxy acid (AHA). It may help reduce acne, fine lines, and wrinkles and improve the appearance of uneven skin. As a person ages, skin renewal slows down, ...

Azelaic acid is a type of acid that's found in some grains like rye, wheat, and barley. It's naturally produced by Malassezia furfur (also known as Pityrosporum ovale), a yeast found on healthy skin.

Salicylic acid peels aren’t a new approach. People have used salicylic acid peels for more than 2,000 years in their skin treatments. The acid is naturally found in willow bark and wintergreen leaves, ...