Skin sunsensitivity is a known chemotherapy side effect but hyper-pigmentation is even more common. This unique full spectrum UVA and UVB face serum is not standard sun cream. It is a gel, 100% oil free and has been formulated to protect even the most delicate, sensitive face, hands and neck areas from chemotherapy induced hyper-pigmentation. Should be used daily under makeup and in sunlight reapplied every 3 hours.