Sun Bum's Original SPF 50 Sunscreen Lotion moisturizes as it protects the skin from damaging UVA and UVB rays. This water-resistant formula also uses antioxidant-rich vitamin E to counteract harmful free radicals that cause premature aging.As well as being reef-friendly, this oil-free lotion works with all skin types. Reapply after towel drying or at least every two hours.