Eco-Friendly Menstrual Products Test High in Toxic Chemicals, Study Finds

April 13, 2026

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A startling new study has raised serious questions about products many consumers embrace as safer, greener alternatives to traditional disposables. Researchers have detected significant levels of toxic PFAS the so-called “forever chemicals” in a notable portion of reusable menstrual items, often added deliberately to enhance leak protection.

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Uncovering PFAS in Reusable Feminine Hygiene Products

A 2025 pilot study published in Environmental Science & Technology Letters examined 59 reusable products, including period underwear, reusable pads, menstrual cups, and incontinence items sourced from North America, Europe, South America, and other regions. Led by experts from the University of Notre Dame and Indiana University's O'Neill School of Public and Environmental Affairs, the research revealed PFAS at concentrations indicating intentional use in nearly 30% of samples overall. Period underwear showed the highest incidence, with 33% exhibiting signs of deliberate fluorination, while reusable pads followed at 25%.

Core Research Discoveries

Most samples (about 71%) had low PFAS levels, likely from incidental transfer such as packaging contact rather than manufacturing intent.
Compounds like 8:2 fluorotelomer alcohol appeared prominently, particularly in North American items; these can metabolize into more harmful forms like PFOA inside the body.
Clean examples existed across every category tested, demonstrating that effective, PFAS-free production remains entirely feasible.

The findings mark the first clear confirmation of intentional PFAS addition in reusable menstrual products, underscoring a gap between marketing claims and actual composition.

The Promise and Paradox of Sustainable Menstrual Options

Reusable menstrual products have gained widespread appeal for their potential to slash waste replacing billions of single-use pads and tampons that otherwise accumulate in landfills each year. Brands frequently emphasize breathable fabrics, organic cotton, and eco-conscious design, positioning these items as responsible choices for both users and the environment.

Yet the deliberate incorporation of PFAS for water-repellent performance creates a striking contradiction. These persistent chemicals excel at repelling liquids and preventing leaks, but they do not break down naturally and accumulate over time in both human bodies and ecosystems. What many viewed as inherently cleaner options now carry hidden risks that challenge their green credentials.

Health Concerns Tied to PFAS Exposure

PFAS compounds have long been associated with serious effects, including immune suppression, endocrine disruption, and developmental impacts in children. The intimate contact involved here amplifies worry: vaginal and mucosal tissues absorb substances far more readily than ordinary skin, potentially increasing systemic exposure during prolonged wear.

Although this study served as an initial screening and did not quantify direct absorption or long-term outcomes from specific products, the vulnerability stands out. Related investigations into single-use tampons have similarly identified heavy metals such as lead and arsenic, highlighting persistent shortcomings in safety standards for menstrual products overall.

Transparency Shortfalls and Regulatory Hurdles

A major obstacle remains the limited ingredient disclosure required for these items. In many markets, including the USA and UK, menstrual products escape the rigorous oversight applied to food, drugs, or even cosmetics, leaving consumers without clear information about potential contaminants. Testing for chemicals like PFAS occurs sporadically, and full formulations often stay proprietary.

Regulatory momentum varies by region. Certain U.S. states advocate stronger labeling rules and PFAS phase-outs, yet comprehensive federal measures trail behind. In the UK, advocates call for expanded government screening and greater reliance on certified low-chemical alternatives, especially in public programs. India, meanwhile, witnesses promising community-driven shifts toward organic cotton cultivation that cut chemical dependency at the source though scaling these efforts to finished goods demands further validation.

Encouragingly, the presence of PFAS-free samples across categories proves manufacturers can deliver reliable performance without these additives. Meaningful change, however, hinges on sustained demand from consumers, health organizations, and lawmakers.

Pathways to Genuinely Safer, Sustainable Choices

This research carries an important positive message: safer alternatives already exist and function effectively. Experts recommend prioritizing independent testing, clearer standards, and mandatory transparency around ingredients. Shoppers can seek out brands verified by third-party certifications such as the Global Organic Textile Standard that restrict PFAS, heavy metals, pesticides, and other concerning substances.

As public understanding deepens, the drive for non-toxic, truly sustainable menstrual care stands poised to spur genuine innovation. Reusable options retain strong potential to minimize environmental footprint, provided the industry eliminates avoidable chemical risks. In the interim, concerned individuals might lean toward certified organic disposables or demonstrably PFAS-free reusables while tracking emerging studies.

The dialogue on menstrual product safety has gained urgency. Revelations like these compel manufacturers, regulators, and users alike to demand better ensuring that eco-friendly claims align with real protection for health and the planet.

Frequently Asked Questions

Do reusable period products like period underwear contain PFAS "forever chemicals"?

Yes, a 2025 pilot study published in *Environmental Science & Technology Letters* found that nearly 30% of reusable menstrual products tested including period underwear, reusable pads, and incontinence items showed signs of intentional PFAS use. Period underwear had the highest rate at 33%. These chemicals are added deliberately to improve leak resistance, but they do not break down naturally and can accumulate in the body and environment.

Are PFAS in menstrual products dangerous to health?

PFAS compounds are linked to serious health concerns including immune suppression, endocrine disruption, and developmental impacts in children. The risk is especially notable with menstrual products because vaginal and mucosal tissues absorb substances far more readily than regular skin, potentially increasing systemic exposure during extended wear. While the 2025 study was a preliminary screening and did not measure direct absorption rates, health experts consider the intimate contact involved a significant concern worth monitoring.

How can I find PFAS-free reusable menstrual products?

The good news is that PFAS-free options exist across every product category tested in the study, proving manufacturers can deliver effective leak protection without these chemicals. Shoppers should look for brands certified by independent standards such as the Global Organic Textile Standard (GOTS), which restricts PFAS, heavy metals, and pesticides. Advocating for stronger labeling laws and mandatory ingredient disclosure can also help push the industry toward greater transparency and safer formulations.

Disclaimer: The above helpful resources content contains personal opinions and experiences. The information provided is for general knowledge and does not constitute professional advice.

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