<story><title>After two hours zinc oxide sunscreen loses effectiveness, becomes toxic: study</title><url>https://phys.org/news/2021-10-hours-sunscreen-zinc-oxide-effectiveness.html</url></story><parent_chain></parent_chain><comment><author>drcode</author><text>Putting together all the messaging I&amp;#x27;ve gotten recently: Regular sunscreen is bad, zinc oxide sunscreen is bad, getting sun is bad, not getting sun is bad (Vitamin D).</text></comment>
<story><title>After two hours zinc oxide sunscreen loses effectiveness, becomes toxic: study</title><url>https://phys.org/news/2021-10-hours-sunscreen-zinc-oxide-effectiveness.html</url></story><parent_chain></parent_chain><comment><author>markenqualitaet</author><text>What a horrible article, repeating the ever same superficial factoid in variation, without ever adding more info.&lt;p&gt;So apparently zinc oxide acts as a catalyst, which reacts with some sunscreen ingredients to form substances toxic to zebra fish, under laboratory conditions.&lt;p&gt;No qualitative analysis of what&amp;#x27;s reacting with what? Which substances make the toxicity?  Hardly worth anyone&amp;#x27;s time at that point no?</text></comment>