Period pants should make your life easier: comfy, reusable, and kinder to the planet. But recent headlines have asked an important question: are your period pants safe?
Some brands have been found to contain PFAS (per- and polyfluoroalkyl substances) — also known as “forever chemicals.” These are man-made chemicals that stick around in our bodies and the environment. Definitely not the kind of forever love anyone needs in their underwear.
That’s why it matters to choose PFAS-free period pants.
What are PFAS and why are they in period pants?
PFAS are used to make fabrics water- and stain-resistant. Handy for carpets, not so much for your underwear. Scientists have linked PFAS exposure to health concerns, and they don’t break down in nature, meaning they build up in our bodies and ecosystems over time.
In period pants, PFAS are sometimes used in the absorbent gusset as a “technical extra.” But here’s the truth: you don’t need PFAS to have effective, leak-proof period underwear. Clever layering of fabrics does the job just fine.
Why PFAS don’t belong in your period care
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Your body deserves better: The vulva and vagina are especially absorbent. PFAS in intimate products could make their way into your body and stay there.
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The planet deserves better: PFAS are “forever chemicals” — they don’t break down, and they pollute waterways when washed.
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You deserve honesty: Period pants shouldn’t come with hidden chemical treatments. If a brand isn’t clear about being PFAS-free, it’s worth asking why.
Mooncup Period Pants: PFAS-free, always
We believe in period care that’s simple, safe, and sustainable. That means our Mooncup Period Pants are:
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PFAS-free
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Free from silver and unnecessary antimicrobial treatments
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Built with smart fabric layers — not chemical shortcuts
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Reusable and washable for years of wear
Because choosing reusable shouldn’t mean swapping plastic waste for chemical worries.
How to spot PFAS in period pants
Not every brand makes it clear. Watch for marketing buzzwords: antimicrobial, anti-odour, stain-resistant. Those can be code for chemical treatments.
If a brand isn’t shouting about being PFAS-free, ask why.
Are PFAS-free period pants effective?
Yes. You don’t need chemical coatings to stay leak-free. Mooncup Period Pants are designed with absorbent, breathable fabric layers that lock in flow and wash clean, ready to reuse again and again. All the protection, none of the forever chemicals.
FAQs: PFAS in period pants
What are PFAS in period pants?
PFAS (per- and polyfluoroalkyl substances) are man-made “forever chemicals” sometimes used in fabrics to make them water- or stain-resistant. They don’t break down in nature or the body, which makes them concerning in something as intimate as period underwear.
Are PFAS in period pants harmful?
Research is ongoing, but PFAS are linked to environmental and health risks. Because the vulva and vagina are highly absorbent, it makes sense to avoid them in period care. That’s why Mooncup Period Pants are PFAS-free.
How do I know if period pants are PFAS-free?
Check the brand’s website and product details. If they don’t clearly state “PFAS-free,” ask questions. Words like antimicrobial, anti-odour or stain-resistant can be red flags for chemical treatments.
Do all period pants contain PFAS?
No. Some brands, including Mooncup, make PFAS-free period pants. But not every brand is transparent, so it’s important to look for clear labelling or confirmation.
Are PFAS-free period pants still leak-proof?
Absolutely. You don’t need chemical coatings for protection. Mooncup Period Pants use clever layers of fabric to lock in flow, keeping you comfortable and dry — without the forever chemicals.
Final word
We didn’t make period pants because everyone else was doing it. We made them because too many out there weren’t good enough.
They leaked. They chafed. And some came with hidden extras no one asked for — like PFAS “forever chemicals”.
Not ours.
Blog disclaimer
Our blog is intended to share information and ideas around periods, health, and sustainability. While we do our best to keep content accurate and up to date, things can change over time. The information here is not intended as medical advice — for any health-related concerns, please consult a qualified healthcare professional. For more information on our claims, please see our Claims Page, and for the most up-to-date product information, please visit our Product Pages.
