It's produced by a company in Detroit and is made from a special type of crystal that filters out 100 per cent of UVA rays. (evo.co.uk)
Mann, a physicist and climatologist now at Pennsylvania State University, University Park, was an assistant professor in the environmental sciences department at UVA from 1999 to 2005. (sciencemag.org)
«Polypodium leucomotos extract has been shown to give some protection against UVA rays in the setting of sun allergies, but the effectiveness of the product depends on the formulation. (refinery29.com)