TIZO stands for Titanium Zinc Oxide. Both Titanium and Zinc are mineral sunscreen designed to deflect UVA and UVB rays. Another common term is physical sunscreen, it lays on top of the skin which results in minimal allergic reactions, rare ocular irritation and is environmentally friendly. TIZO only use mineral sunscreen ingredients Titanium Dioxide and Zinc Oxide as active ingredients in their sunscreen formulas.