Indiana University Jul 22 2025 A new study from researchers at the Indiana University Paul H. O'Neill School of Public and Environmental Affairs and the University of Notre Dame shows that per- and polyfluoroalkyl chemicals (PFAS)-also known as "forever chemicals"-can be found in reusable feminine hygiene products. The pilot study provides information that will be useful for consumers, regulators, and manufacturers. Published in Environmental Science & Technology Letters, the article, "Per- and