Can PFAS in clothing be absorbed through your skin when you sweat?

Yes, research confirms that PFAS chemicals in clothing can transfer to the skin and that absorption increases significantly when the skin is moist from sweat. The dermal absorption pathway works because sweat acts as a solvent that helps mobilize PFAS compounds from fabric coatings onto the skin surface, where they can then penetrate through the outer skin layer.

A study examining PFAS transfer from treated textiles found measurable levels of these chemicals on skin after wearing treated garments, with concentrations increasing during physical activity. This is particularly concerning for activewear, which is often PFAS-treated for moisture management and is worn during intense sweating when pores are dilated and blood flow to the skin is elevated.

Choosing activewear made from untreated natural fibers eliminates this exposure route entirely. Brands carried on ONDU, like Tripulse and Reprise Activewear, achieve moisture management through the inherent properties of Tencel and merino wool rather than chemical treatments. Your workout clothing should support your health, not undermine it.