Sunscreen use is critical to protecting your skin from UV radiation. Wearing the right sunscreen will allow you to maximize your time in the sun while being protected from its harmful rays. Dermatologists recommend picking a broad spectrum sunscreen (one which blocks both UVA and UVB rays) with an SPF of 30 or higher. Apply the sunscreen liberally and thoroughly, ensuring that all sun exposed skin has been covered. As a general rule, a shot glass full of sunscreen is needed to cover an adult’s body. Apply the sunscreen 15 minutes before heading outdoors, and don’t forget to reapply at a minimum of once every 2 hours. Beware that your sunscreen may wash away if you are swimming or sweating. Picking a water resistant sunscreen and frequently reapplying will help you stay protected in the sun even when you are participating in water activities or exercising.