Oily skin has a lot of natural oils that keep it supple, so you don't need a richer moisturizer in the coldest months, says N.Y.C. dermatologist Debra Jaliman. Instead, focus on finding a lotion that will work in every season. "Choose one that's noncomedogenic with a broad-spectrum SPF because UVA rays are present year-round," says Jaliman. Try Prescriptives Broad Spectrum Oil-Absorbing lotion SPF. (page 260)