Which acid is right for your skin type? Consider this your helpful guide to all things acid. Collage / Ash Cometti Skincare ingredients list has you stumped? Consider this your go-to guide to acids.

Recognize this ingredient? This is an alpha hydroxy acid, or AHA. "This acid tends to be one of the weaker acids you can use for exfoliating," says dermatologist Dr. Janet Prystowsky. "You will find ...

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.

Imagine a type of fat that not only fuels your body but also protects your heart, mind and keeps inflammation low. Sounds like a dream, right? Meet omega fatty acids—the "good fats" that are vital for ...