Uses: High protection against sunburn. Higher SPF gives more sunburn protection. 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 10am - 2pm. Wear long sleeved shirts, pants, hats and sunglasses.