[schiffern]

"Teflon" ski wax (fluoro-wax) contains PFOA impurities, which is that same problematic chemical. It's expensive to remove so most manufacturers don't bother.

https://skiracing.com/future-without-fluoros-a-complete-guid...

[cluckindan]

It’s also applied to skis by heating it, which breaks down the polymers.