CETAPHIL Sheer Mineral Sunscreen with SPF 50 uses zinc oxide and titanium dioxide to create a barrier against UVA and UVB rays, reflecting harmful rays rather than absorbing them. With 100% mineral sun protection, this chemical free formula is gentle on sensitive skin. This gentle mineral sunscreen provides reliable sun protection with lasting hydration. The nourishing formula, with soothing vitamin E and skin conditioners, locks in moisture to hydrate the skin, preventing the drying effects of the sun while being gentle to the skin's delicate microbiome.