PFAS-free period underwear is made without the group of long-lasting synthetic chemicals known as PFAS, sometimes called forever chemicals. This has become a key buying point because, from 1 January 2026, France banned PFAS in clothing textiles, and an EU-wide restriction is advancing. If you are refreshing your underwear drawer, here is a calm, factual look at what PFAS are, what the new rules say, and what to look for.
This is general consumer information about textiles and regulation, not medical advice.
What are PFAS, and why the concern?
PFAS stands for per- and polyfluoroalkyl substances, a large family of synthetic chemicals valued in industry for resisting water, grease and stains. They earned the nickname forever chemicals because they break down extremely slowly and can persist in the environment and the body. That persistence is why regulators across Europe have been moving to limit their use in everyday consumer products, including textiles.
What the 2026 rules actually say
The headline change is in France. Under Law No. 2025-188, brought into force by Decree No. 2025-1376, France prohibited the manufacture, import and sale of PFAS-containing clothing textiles from 1 January 2026, alongside similar bans on PFAS in cosmetics and ski wax. Stock made before that date may be sold during a transition period running to the end of 2026, and the scope is set to widen to cover essentially all textiles from 1 January 2030.
France is ahead of the curve, but it is not alone. At EU level, a broad restriction on PFAS is being assessed under the REACH regulation, which could extend similar limits across the bloc in the coming years. The clear direction of travel is towards less PFAS in the things we wear, which makes PFAS-free a sensible, future-proof choice now.
Does period underwear contain PFAS?
Some period and leak-proof underwear has, in the past, been found to contain PFAS, often linked to water- or stain-resistant finishes, which is exactly why independent testing and the new rules have put the category under the spotlight. It is not universal, and many brands now design their products to be PFAS-free. The takeaway is not alarm but awareness: it is worth choosing underwear that is made without these chemicals.
What to look for when you shop
- A clear PFAS-free statement from the brand, ideally backed by testing or recognised certification.
- Independent textile certifications such as Oeko-Tex, where genuinely held, which test for a range of harmful substances.
- Transparent materials information on the product page so you can see what the underwear is made from.
- Reusable, well-made construction, since the point of switching is comfort and longevity, not single use.
Our Lunation period and bladder-leak underwear is reusable, absorbent underwear designed to be made without intentionally added PFAS; the product page carries the latest materials and certification details. It is designed for periods and for light bladder leaks, so one pair can cover more than one kind of day, which we explore in period and bladder-leak underwear.
Refreshing your drawer, sensibly
You do not need to replace everything at once. A practical approach is to build up a small rotation of PFAS-free pairs over time, choosing absorbencies that match your typical days, from lighter everyday cover to heavier flow. Keeping a few pairs means you always have a clean, dry option while others are in the wash. When you do retire older underwear, the new rules are a useful prompt to choose replacements that are made without these chemicals, so your drawer gradually becomes both more comfortable and more future-proof.
Is it safe and worth switching?
Reusable leak-proof underwear is a widely used, practical garment, and choosing a PFAS-free option simply removes a class of chemicals that regulators are phasing out anyway. Beyond the safety angle, reusable underwear can reduce waste compared with disposables. To wash, most pairs are rinsed in cold water then machine-washed gently and air-dried, following the care label. For the wider picture of intimate comfort, including the days around menopause, see our Pelvic and Intimate Wellness hub.
Good to know
Frequently asked questions
Does period underwear contain PFAS forever chemicals?
Some period underwear has been found to contain PFAS in the past, often from water- or stain-resistant finishes, though it is not universal and many brands now make PFAS-free products. From 1 January 2026 France banned PFAS in clothing textiles, and an EU-wide restriction is advancing.
What do the 2026 PFAS rules mean for buying underwear?
Under French Law 2025-188 and Decree 2025-1376, PFAS-containing clothing textiles cannot be sold from 1 January 2026, with the scope widening towards 2030 and an EU REACH restriction in progress. In practice, choosing PFAS-free underwear now is a sensible, future-proof decision.
Is period and leak-proof underwear safe to wear?
Reusable leak-proof underwear is a widely used everyday garment. Choosing a PFAS-free, certified option removes chemicals regulators are phasing out. It is a garment for comfort and leak confidence, not a medical device, and is not a treatment for any condition.
Can the same underwear be used for periods and light bladder leaks?
Yes, many reusable pairs are designed to absorb both period flow and light bladder leaks, so a single pair can suit different days. Check the product's stated absorbency and follow the care instructions for best results.
This article is general information about textiles and regulation and is not medical advice. Lunation is reusable, absorbent underwear for periods and light bladder leaks; it is a garment, not a medicine or medical device, and is not intended to diagnose, treat or cure any condition. Please see the product page for current materials and certification details.