apply liberally 15 minutes before sun exposure
use a water-resistant sunscreen if swimming or sweating.
reapply at least every two hours if skin exposed to sun.
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
children under 6 months: Ask a doctor