Your skin is your body’s largest and fastest-growing organ. Its jobs are numerous: It protects you from germs and helps to regulate your body temperature. Your skin protects you and keeps you healthy. So why not do the same and protect it from harmful UV rays? - See more at: http://www.merck.com/about/featured-stories/be-safe-in-the-sun.html#sthash.Y3cD933I.dpuf