Scientists do not currently understand how readily PFHxA transfers into the skin, nor the potential health effects it poses once it gets there, though Peaslee says recent studies suggest that a significant percentage could pass through human skin under normal conditions.

This seems to be there important missing link here. We know that these chemicals are everywhere, but don’t yet know if they pass through the skin or off there are any significant impact. I wish they cited which studies have looked into this.