Apply liberally 15 minutes before sun exposure. Reapply after 80 minutes of swimming or sweating. * Immediately after towel drying. * Reapply 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 the risk, regularly use a sunscreen  with a Broad Spectrum SPF value of 15 or higher and other sun protection measures.