Eucerin Advanced Repair Dry Skin Lotion

If the thought of a thick cream on your super-dry skin bothers you, Palep recommends Eucerin Advanced Repair Dry Skin Lotion, which is thinner than many other formulas for extreme dryness but promises to lock in moisture for up to 48 hours. (She's not the only dermatologist who likes it; others have previously told us that it's a great hydrator for dry skin.) "I've seen it wipe out alligator skin, which is difficult to do," says Palep. MacGregor agrees, but cautions that because this formula contains lactic acid (along with ceramides and hyaluronic acid), it should be used to prevent the formation of extremely dry skin rather than to treat cracks or splits that have already formed. "It has mild peeling agents to smooth rough follicles," she says, explaining why it's better for prevention. Hirsch also warns that this lotion isn't suitable for people who have "existing fissures" on their skin because it can sting. She does, however, mention lactic acid as a "often overlooked but fantastic" ingredient for dry skin because it can act as a gentle exfoliant as well as a humectant.

Price: $9 (discount)

Uses: Moisturize and soothe the skin

Ingredients: Ceramides and Hyaluronic Acid