Nano-free sun protection Nanomaterials are microscopic particles of ingredients, much smaller than molecules of matter, that can penetrate the skin more easily. Thats why we carefully choose zinc oxide for our ingredients so that it stays on the skins surface and provides protection. ATTITUDE sunscreens based on inorganic compounds do not contain nanoparticles (non-nano) and come in the form of a solid cream (stick) for comfortable and controlled application. They create a natural protective film on the skin, a shield against UVA and UVB radiation (broad spectrum) with SPF 30 protection.