Skipping Sunscreen
We've all been told to never skip the sunscreen, but it's often tempting when many of us spend our days indoors. Even a few minutes of sun exposure can lead to a breakdown of collagen, though, and that leads to fine lines and wrinkles. "Wear sunscreen every day, rain or shine, so that you don't get sun damage. Choose an SPF 30 and one that has zinc oxide or titanium dioxide," says Debra Jaliman, M.D., a New York-based dermatologist and author of Skin Rules.