Screens out the suns burning rays to help prevent sunburn. Provides protection from UVA rays that may contribute to skin damage and premature aging of the skin. Higher SPF gives more sunburn protection. Retains SPF after 80 minutes of activity in the water or sweating. This lotion glides on as a soft moisture-rich foam. And its mild formula wont sting or irritate babys delicate skin. Broad spectrum UVA/UVB protection. Waterproof. Hypoallergenic. PABA-free. Dermatologist-tested. #1 pediatrician