The 6 Best Things You Can Do for Your Body

"I use a face moisturizer that has vitamin C, which can help prevent the oxidation in skin that damages elastic tissue and collagen. Look for a product with a vitamin C content of 10 percent—just enough for you to see the benefits without being too harsh. And make sure the product is stored in an opaque, airtight container so the vitamin C doesn't get oxidized. If that happens, it'll lose its effect."
—Judith Hellman, MD, New York–based dermatologist