[Ghexor]

From the abstract of [0]: Microplastics and nanoplastics [..] particles can penetrate the skin, especially if the skin barrier is compromised. [they] may cause oxidative stress, trigger inflammation, and induce senescence. This article calls for research on the topic and advocates for plastic-free or bio-degradable alternatives.

[0]: https://pubmed.ncbi.nlm.nih.gov/41207769/

[IAmBroom]

Which part of that statement is untrue if you substitute "natural fiber" for "Microplastics and nanoplastics"?

Literally anything can penetrate the skin if the skin barrier is compromised. That's just sophistry: "If you shove things into a cut, they will be inside your skin!"