Mineral sunscreens are physical they l work like a shield deflecting the sun's rays, the main ingredients are titanium dioxide and zinc oxide, minerals that are classified as safe and effective by the fda. if you plan to swim or sweat you may want to chemical sunscreen. it works like a sponge absorbing the suns rays. all the chemicals can be detected in the blood weeks after they were accused, some doctors say that does not mean they are dangerous. the fda says more studies need to be done. >> we recommend the consumers avoid using oxybenzone, use is associated with potential impact on our end...