4 Pack Revlon Nearly Naked Liquid Makeup Helps prevent sunburn. If used as directed with other sun protection measures (see Directions) may decrease the risk of skin cancer and early skin aging caused by the sun. Directions: Apply liberally 15 minutes before sun exposure. Use a water resistant sunscreen if swimming or sweating. Reapply at least every 2 hours. Sun Protection Measures: Spending time in the sun increases your risk of skin cancer and early skin aging.