IDUN Minerals does not use PFAS. In order to check if a cosmetic product contain PFAS, you may check the ingredient lists and look for “PTFE”, “Polytef”, or words that contain "perfluoro" or "polyfluoro". This means that the product contains highly fluorinated substances and should be avoided. Decafluoropentane and C9-15 (or C8-18) fluoroalcohol are also PFAS.