The Lab
Specimen No. 0161
AvoidSynthetichormone disruptormaterial

PFOA (Perfluorooctanoic Acid)

pfoa · c8 · perfluorooctanoic acid

A forever chemical used historically in waterproof fabric coatings and Gore-Tex manufacturing. Removed from Gore-Tex raw materials in 2013, but replacement PFAS chemicals in durable water repellent (DWR) coatings remain a concern. Classified as a persistent bioaccumulative toxin linked to liver damage, thyroid disease, and reproductive harm.

high confidence
Researched April 18, 2026

Concerns

  • Persistent bioaccumulative toxin — does not degrade in the environment or human body
  • Linked to thyroid disruption, liver damage, and reduced fertility
  • PFAS replacement chemicals in DWR coatings still lack long-term safety data
  • Detected in blood of people who regularly wear waterproof outdoor gear [Inference]

Regulatory flags

  • IARC Group 1 carcinogen
  • Banned from manufacturing (EU, US)
  • Stockholm Convention listed persistent organic pollutant

Commonly found in

Waterproof jacketsRain gearGore-Tex productsPerformance clothingOutdoor apparel

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

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