Source: University of Notre Dame, 7/22/25
The results of a study conducted by researchers from Notre Dame and Indiana University focusing on per- and polyfluoroalkyl substances (PFAS) in reusable feminine hygiene products have been published in Environmental Science & Technology. Most of the samples contained PFAS concentrations low enough to be characterized by study authors as "non-intentionally fluorinated." But period underwear (33 percent) and reusable pads (25 percent) had the greatest rates of "intentional fluorination."