Plant Guru Zinc Oxide can be added to creams and lotions to add sun protection. This makes it perfect for the “do-it-yourselfer” who is concerned about the harmful effects of ultraviolet radiation on the skin. It is the best broad spectrum UVA and UVB reflector approved for use as a sunscreen by the Food and Drug Administration. This is because zinc oxide does not absorb into the skin when applied with a lotion. Instead it sits on top of the skin and reflects both UVA and UVB light. Because it isn't absorbed into the skin, it doesn't irritate or cause allergic reactions.