Although mexoryl, aka ecamsule, has been used in European sunscreens since the early 90's, the FDA just recently approved it for use in the States. Mexoryl is an organic filter that protects against UVA rays!!!! Making it a key ingredient for wide spectrum sunscreens - remember the SPF ratings are just for UVB rays. In fact, mexoryl is the best thing on the market for blocking UVA rays and it lasts longer than other UVA blockers.
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