PFAS in Cosmetics (Foundation, Waterproof Mascara, Lip Products — Notre Dame 2021 Study, 52% Positive for Fluorine) — safety profile
Moderate riskA landmark 2021 study from the University of Notre Dame (Environmental Science & Technology Letters) tested 231 cosmetic products purchased in the US and Canada and found measurable total fluorine (indicator of PFAS) in 52% of samples.
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A landmark 2021 study from the University of Notre Dame (Environmental Science & Technology Letters) tested 231 cosmetic products purchased in the US and Canada and found measurable total fluorine (indicator of PFAS) in 52% of samples. The highest detection rates were in waterproof mascara (82%), foundations (63%), and lip products (55%) — products designed for long-wear, water resistance, or smooth application. Specific PFAS identified included PTFE (polytetrafluoroethylene, listed as an ingredient), perfluorooctanoic acid (PFOA), and 6:2 fluorotelomer alcohol (6:2 FTOH). PFAS in lip products present a direct oral ingestion pathway — the average person inadvertently ingests approximately 2-5 mg of lip product per application. PFAS are endocrine disruptors, immunotoxicants, and associated with cancer (IARC classified PFOA as Group 1 carcinogen in 2023). Unlike industrial PFAS exposure (water contamination), cosmetic PFAS exposure occurs via dermal absorption and oral ingestion at low but chronic daily doses. California AB 2771 (effective 2025) bans intentionally added PFAS in cosmetics — the first state law of its kind. The EU is considering a universal PFAS restriction under REACH that would include cosmetics.
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