apply generously and evenly 15 minutes before sun exposure * reapply at least every 2 hours * use a water resistant sunscreen if swimming or sweating * 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 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 * Children under 6 months: Ask a doctor