Acne is the most common skin condition in the United States, affecting up to 50 million Americans annually. 1 There are different types of acne (blackheads, whiteheads, pimples, acne cysts or nodules) ...

But I get it. The ingredient, a form of vitamin A, is the gold standard for addressing just about any skin-care concern — from acne to wrinkles to hyperpigmentation — so its become the go-to ...