"First, find a favorite. Women will hunt for the perfect lipstick forever, but we don't take the time to test multiple sunscreens. Think about it, though: If a product ends up feeling sticky on your skin, you won't wear it every day. And don't leave home without it. I carry a sunscreen stick in my purse, so I'm never unprepared."
Next: Dr. Oz's 24 smart strategies for feeling great at every age