A new study reveals the presence of per- and polyfluoroalkyl substances (PFAS), also known as 'forever chemicals,' in period underwear and menstrual cups. These products, often marketed as eco-friendly alternatives to traditional pads and tampons, are now under scrutiny for potentially exposing users to hazardous chemicals. PFAS are linked to various health concerns, raising questions about the safety and sustainability of these menstrual products. Further research is needed to determine the extent of PFAS contamination and its potential impact on human health.