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UV Protection Emulsion Patented by L’Oréal



Published July 14, 2008
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Patent No. US 7,381,403 B2
L’Oréal, Paris (France) has patented a finely divided UV-photoprotective oil-in-water emulsion that is microscopically stable for at least 30 days in the absence of phase separation. The oil globules, which have an average size of no more than 500nm, contain particles of at least one ionic polymer and at least one UV radiation-screening system that contains at least one 4,4-diarylbutadiene UVA-screening agent.


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