On a recent trip to her local Costco, Sonya Angelone, RDN, noticed a box with the message "Good source of omegas!" plastered across the package. While other shoppers might have tossed it in their cart ...

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.

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.