If your skin turns slick with glow by noon, you've got oily skin. To balance sebum (the greasy secretion generated by your sebaceous glands), start looking for cleansing, toning, and moisturizing products which contain salicylic acid, lactic acid, and benzoyl peroxide to include in your everyday routine. (If using benzoyl peroxide, make sure to clean your hands thoroughly after use, as it can stain colored towels and bedding.) Oily skin needs hydration to look and feel young, so Bank recommends using a hyaluronic acid-based moisturizer such as SkinCeuticals Hydrating B5 Gel. Lightweight and immediately absorbed, hyaluronic acid is naturally produced from the body to purge elements like the joints and eyes.