Wearing sunscreen is smart, but if you don't apply it correctly, your SPF protection is cut in half! Protect your skin with this smart sun tip.

Video Transcription

Female: Want to protect yourself from harmful UV sunrays? Doctor Hadley King is here for your health tip of the day for choosing the right sunscreen. Female: Get the most out of your sunscreen by choosing one with the sun protection factor or SPF of 30 or higher. An SPF of 15 blocks 93% of the sun’s rays while an SPF of 50 stops 99%. The skin cancer foundations can help you choose a highly effective brand. Selecting the right sunscreen is only the first step. To get the full SPF you must apply enough of it. Use one ounce of sunscreen or a shot glass full. Most people apply half that which means the actual SPF on the body is lower than advertised. Apply sunscreen correctly. Cover your entire body 30 minutes before sun exposure to allow the ingredients to fully bind to the skin. And re apply every two hours.