What Are PFAS and Why Do They Matter?
PFAS — per- and polyfluoroalkyl substances — are a family of more than 12,000 synthetic chemicals used in manufacturing processes worldwide. They are known as "forever chemicals" because they do not break down naturally in the human body or in the environment. Once PFAS enter the bloodstream, they accumulate over time, and research links long-term PFAS exposure to a range of serious health effects including:
- Cancer (kidney, testicular, bladder, ovarian)
- Thyroid disease and hormonal disruption
- Immune system suppression
- High cholesterol and cardiovascular disease
- Reduced fertility and pregnancy complications
- Developmental delays in children born to exposed mothers
The EPA set the first-ever maximum contaminant levels for six PFAS compounds in drinking water in 2024, reflecting growing scientific consensus that no safe level of PFAS exposure exists.
PFAS Found in Organic and "Pure" Tampons
A 2024 study published in Environment International tested multiple tampon brands for organic fluorine — a marker for PFAS contamination. Alarmingly, the presence of organic fluorine was detected in both conventional and organic tampon products, including brands marketed specifically for their purity and chemical-free positioning.
Tampax Pure Cotton — which P&G markets with language emphasizing its cotton sourcing and absence of synthetic fibers — was among the products scrutinized by researchers. The discovery of PFAS markers in products marketed as "pure" or "organic" is central to the false advertising claims in pending litigation.
The "Organic" Fraud Allegation
Consumers who purchased Tampax Pure Cotton typically paid a significant price premium over conventional tampons — often 30–50% more — based on the belief that they were getting a safer, chemical-free product. The class action lawsuit against P&G includes claims that:
- The marketing of Tampax Pure Cotton as "pure" and free from synthetic chemicals was materially misleading given the presence of PFAS markers
- P&G failed to conduct or disclose adequate heavy metal and PFAS testing before labeling products as safe alternatives
- Consumers paid an unjustified premium for a product that did not meet its implied safety standards
- The "100% organic cotton" claim does not address chemical contamination in the manufacturing process, bleaching, or cotton sourcing
How PFAS Might Enter Tampon Products
PFAS contamination in cotton products can occur through several pathways:
- Agricultural contamination — cotton grown in soil or irrigated with water contaminated by PFAS from nearby industrial sites or military bases
- Manufacturing processes — PFAS are used in many industrial applications and can contaminate products during processing
- Bleaching and finishing — chemical treatments applied during fiber processing can introduce or interact with PFAS compounds
- Packaging materials — PFAS-treated packaging materials can leach into product contents
The "organic" certification process for cotton does not currently require testing for PFAS contamination, which creates a significant regulatory gap that manufacturers have not disclosed to consumers.
California Prop 65 and PFAS in Tampons
California's Proposition 65 requires businesses to provide clear warnings before knowingly exposing anyone to chemicals known to cause cancer, birth defects, or reproductive harm. Several PFAS compounds are listed as Prop 65 chemicals. California consumers who purchased Tampax Pure Cotton without a Prop 65 warning may have grounds for a claim under California's consumer protection statutes.
What Should Consumers Do?
- Switch to products that have independently verified PFAS-free status from third-party labs
- Consult your doctor about PFAS testing (blood serum PFAS testing is available)
- Document your purchase history for Tampax Pure Cotton products
- Check your eligibility for the Tampax PFAS lawsuit claim