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.

There's arguably no category of skincare ingredients that can do more than direct acids. They're well-known—and beloved—for their ability to do everything from brighten skin to unclog pores. But, ...

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, ...

In short, AHAs work by exfoliating, and that process makes skin look instantly more refreshed. Though a scrub can also remove dead cells, chemically exfoliating with alpha hydroxy acid products can go ...

Chemical peels using either alpha-hydroxy acid or beta-hydroxy acid are both highly effective in treating mild to moderately severe facial acne, researchers at the Saint Louis University School of ...