cetaphil sheer mineral face liquid sunscreen reflects both UVA and UVB rays to help prevent sunburn and decrease the risk of skin cancer and early signs of aging due to sun exposure. The sheer, cosmetically elegant formula glide effortlessly onto skin providing sun protection and locking in hydration without the any white cast or greasy residue. The sheer, cosmetically elegant formula glides effortlessly onto skin providing sun protection and locking in hydration without the any white cast or greasy residue.