Denmark, Germany, the Netherlands, Norway and Sweden have made a joint proposal to restrict per- and polyfluorinated alkyl substances (PFAS) in Europe under the European REACH Regulation. The substance group of PFAS comprises more than 10,000 substances that are used in numerous applications due to their unique chemical properties (e.g. water-repellent as well as temperature and chemical resistant). Due to these special properties, PFAS are relatively stable in nature and are only degraded with difficulty. The use of PFAS is already (strictly) regulated in some areas and some applications. The now planned full restriction of PFASs under REACH would cover their placing on the market, manufacture, use and presence in the product in the EU. Temporary exemptions from the restriction are possible under certain conditions.