Sunscreen: Are You Really Covered?Our experts debunk sunscreen myths. Find out what's true and what's not about sunscreen and SPF.http://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/articles/thumbnails_daily_images/Features/magazine/2011/May/69x75_suntan_lotion.jpg Sunscreen: Are You Really Covered?What's true, and what's not, about sunscreen and SPF.