Cosmopolitan - ‘Natural’ period pants brand Thinx found to contain toxic chemicals: here's the low-down

Wait… what are PFAS?

Libby Linford, a Registered Nutritionist & Functional Medicine Practitioner, tells Cosmopolitan UK that PFAS are a large group of man-made industrial chemicals which are used in various everyday products – they’re found in waterproof clothing, non-stick bakeware, in food packaging, toiletries, and home products such as carpets. Known as “forever chemicals” they can build up in our bodies and take thousands of years to degrade. Some research has even linked small doses of PFAS to cancer, reproductive and immune system harm, and other diseases, according to the Environmental Working Group.