If you want a reef-safe sunscreen from Coppertone, opt for the Sport Mineral or Pure & Simple 100% Mineral like this one, or the kids version, and even babies, line of sunscreens. The regular Coppertone Sport 4-in-1 does not contain either zinc oxide or titanium dioxide as active ingredients. So even though the front label highlights regular Coppertone Sport is free of oxbenzone and octinoxate, you would not be able to use it in Maui County or purchase in Hawaii County (Big Island).