Per- and polyfluoroalkyl substances, also known as PFAS, are a class of up to 10,000 synthetic substances. For over 70 years, they have been widely used across industry for their non-stick, waterproof, or heat-resistant properties and can be found in a multitude of everyday objects such as non-stick pans, cooking paper, food packaging, waterproof textiles, and cosmetics. PFAS are also prevalent in the professional arena, used not only in paints, pesticides, and fire-fighting foam but also in pharmaceuticals, semiconductors, and transport infrastructure. Regrettably, they are all highly persistent in the environment and some of them, for example, perfluorooctanoic acid (PFOA), are linked to severe health-related problems, such as cancer, low infant birth weight, and diminished vaccine response – these have already been restricted or are subject to international bans.