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 ...

Acne comes in all shapes, sizes and forms, but cystic acne is the most severe. It appears as large, deep, pus-filled bumps on the skin that are painful and cause scarring. The bump, or cyst, starts ...