Abstract
The deleterious effects of long-wave (320–400 nm) ultraviolet (UV) radiation on human skin have been recognized for decades. Human exposure to UV radiation may induce skin pigmentation and sunburn, cutaneous connective tissue alterations (photoaging), immunosuppression, and the development of skin cancers. Public awareness campaigns on the need for photoprotection advocate the regular use of sunscreens. Consumer demand and an expanding knowledge of the adverse effects of UV exposure have fueled the continual development of novel sunscreen formulations. Two organic UV filters, terephthlylidene dicamphor sulphonic acid (Mexoryl SX, L'Oréal, Paris, France) and drometrizole trisiloxane (Mexoryl XL, L'Oréal), provide effective protection from UV irradiation and offer improved safety profiles in terms of protection from UVA radiation. This article details the photoprotective benefits of Mexoryl SX and Mexoryl XL.
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