Directions apply liberally 15 minutes before sun exposure reapply:after 80 minutes of swimming or sweating . lmmediately 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 value 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-sleeved shirts, pants, hats, and sunglasses children under 6 months: Ask a doctor