The key to not getting burned this summer? Use protection. You know the drill: slather on a shot glass's worth of sunscreen before you head out and yes, you will need to reapply every two hours or so. We know it's a drag. There's nothing cool about asking your buddy to get your back for the third time in a day. But there's nothing cool about red, raw, peeling shoulders either. So we've gathered up the most common excuses to help you find the right sunblock.