Many people suffer from such extremely sun sensitive skin conditions such as lupus, rosacea, skin cancer, polymorphous light eruption as well as those on chemotherapy or other sun sensitive medications and those post laser treatments, that typical sunscreens just don't work. Total Block products by Fallene have been developed to protect against UVA/UVB, visible and infrared light. Absorbs UV as well as helps to inhibit free radical damage. Comes in 2 varieties-one to help give clear coverage, the second to custom mask skin irregularities such as redness.