After two hours, sunscreen that includes zinc oxide loses effectiveness, becomes toxic

Sunscreen that includes zinc oxide, a common ingredient, loses much of its effectiveness and becomes toxic after two hours of exposure to ultraviolet radiation, according to a collaboration that included Oregon State University scientists.

News Source: https://today.oregonstate.edu/news/osu-study-after-two-hours-sunscreen-includes-zinc-oxide-loses-effectiveness-becomes-toxic

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