UV radiation from the sun causes up to 90% of photoaging, which manifests itself as fine lines, wrinkles, hyperpigmentation – and even skin cancer. Even the best broad-spectrum sunscreen, like those offered by SkinCeuticals, can only block up to 55% of the damaging free radicals from UV exposure, so it is vital to use an effective topical antioxidant DAILY to neutralize the remaining UV-induced free radicals from the INSIDE. SKINCEUTICALS ANTIOXIDANTS ARE CLINICALLY PROVEN and designed to provide the most advanced protection from environmental aging. SkinCeuticals antioxidants and sunscreens provide ultimate photoprotection - preventing the visible signs of photoaging.