Zinc oxide (ZnO) is a natural mineral used to make sunscreen known for its ability to shield against the harmful effects of the sun. Zinc oxide forms a protective physical barrier over the skin and stops harmful UV rays. Zinc oxide is particularly valuable because of its ability to filter UVA as well as UVB light, giving broad protection from damaging sunlight.
It can be used in ointments, creams and lotions to protect against sunburn. It can also be used to make diaper cream.