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A comment on After two hours zinc oxide sunscreen loses effectiveness, becomes toxic: study.

Re:After two hours zinc oxide sunscreen loses effectiveness,... by markenqualitaet on Thursday October 14, 2021 @11:06AM (#28865312)
What a horrible article, repeating the ever same superficial factoid in variation, without ever adding more info.

So apparently zinc oxide acts as a catalyst, which reacts with some sunscreen ingredients to form substances toxic to zebra fish, under laboratory conditions.

No qualitative analysis of what's reacting with what? Which substances make the toxicity? Hardly worth anyone's time at that point no?

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Re:After two hours zinc oxide sunscreen loses effectiveness,... by MobiusHorizons on Thursday October 14, 2021 @11:16AM (#28865465)
Came here to say the same thing. I would have expected at least a small amount of chemical analysis. Something more than “toxic to zebra fish”. Also some information about how toxicity was measured like how much sunscreen the fish were exposed to, what effects it had on them.
[ Parent | on HN ]
Re:After two hours zinc oxide sunscreen loses effectiveness,... by andor on Thursday October 14, 2021 @01:41PM (#28867443)
It's not horrible just because it cannot answer all your questions. The article summarizes a research paper and provides a link for all the raw details.
[ Parent | on HN ]