NON NANO: This is important because it makes it so it won't be absorbed in your blood stream but will simply sit on the surface of your skin to act as a barrier. COSMETIC & DIY PRODUCTS : Many cosmetic products have zinc oxide because its helps to lighten dark spots on your skin will keeps healthy & moisturized, acne-free and will improve the complexion and texture of your skin. COSMETIC GRADE: Bliss of earth zinc oxide powder is non nano and uncoated. it the pure grade zinc oxide powder there is no lead or other impurities init.