Celebrities' Winter Skin Tips

"In the winter, when my skin gets dry, I use a combination of products from SkinCeuticals," says Gwyneth Paltrow. "A few drops of Hydrating B5 Gel goes a long way in helping to keep my skin fully moisturized. I use this along with their A.G.E. Interrupter, which fights wrinkles, and C E Ferulic, their antioxidant, after washing my face, neck and chest." A.G.E. Interrupter, $150, and Hydrating B5 Gel, $69, SkinCeauticals; skinceuticals.com