A splash of cold water does more than wake you up. A good cleanse helps slough away dead skin cells that stick together and make your face look dull. Use a wash with glycolic acid, like Neutrogena Healthy Skin Anti-Wrinkle Anti-Blemish Cleanser ($6, neutrogena.com), both in the morning and before bed, advises Sobel. For a deeper clean that also stimulates the growth of new skin cells, wash with an exfoliating scrub, like Tree Hut Almond & Honey Shea Sugar Body Scrub ($20, amazon.com), once or twice a week. Just don’t overdo it—cut back if skin starts to get red or irritated.