• apply liberally 15 minutes before sun exposure• reapply:• after 80 minutes of swimming or sweating• immediately after towel drying• at least every 2 hours• Sun Protection Measures. Spending time in the sun increases your risk of skin cancer and early skin aging. To decrease this risk, regularly use a sunscreen with a broad spectrum SPF of 15 or higher and other sun protection measures including:• limit time in the sun, especially from 10 a.m. – 2 p.m.• wear long-sleeve shirts, pants, hats, and sunglasses.