Fundamentals, page-4

A small note as well, the articles you reference contain serious bias.

"Researchers estimated it would take some 5,700 people with sunscreen swimming in an Olympic-sized pool to bring about similarly disastrous effects. According to the team, the study’s results, the first of its kind, are not easily applicable to the real environment as other natural factors such as waves and currents come into play."

Anything is toxic in large enough quantities, this is data manipulation at its' finest.


Have a read of this:
https://www.sciencedaily.com/releases/2018/12/181204131110.htm

"direct evidence that intact ZnO nanoparticles neither penetrate the human skin barrier nor cause cellular toxicity after repeated application to human volunteers under in-use conditions."