Period underwear without PFAS is becoming a popular choice for those looking for safer, more modern alternatives to traditional menstrual products like cups, tampons, and pads. Its convenient and high-performing design matches the needs of today’s users. As more people learn about the materials used in menstrual products, questions around health and safety are growing. One key concern is not just how well the underwear prevents leaks, but whether it contains harmful chemicals such as PFAS (Per- and Polyfluoroalkyl Substances). These substances are used for their strong water resistance, but may also carry health risks. Because PFAS free period underwear is now treated as a medical item in many countries, more attention is being given to this issue. Choosing non toxic period underwear is an important step for anyone who values both comfort and safety.
What is PFAS and Why It's in Period Underwear
PFAS (Per- and Polyfluoroalkyl Substances) are man-made chemicals that have been used in industry and everyday products since the 1940s. They are known for their resistance to water, oil, and heat, which is why they have been added to items like nonstick cookware, food packaging, and waterproof fabrics. According to the U.S. Environmental Protection Agency1, PFAS have been found in the blood of people and animals worldwide, mainly due to their widespread use and their ability to stay in the environment for a long time. There are thousands of different types of PFAS, but only a few have been deeply studied so far.
Is PFAS safe?
PFAS is often called “forever chemicals” because they do not break down easily. These chemicals can stay in the environment—and even in our bodies—for a very long time.
Research is ongoing to better understand how exposure to different types of PFAS can affect human health. Current studies suggest that exposure to certain levels of PFAS may be linked to a variety of health problems, including hormone disruption, reduced fertility, and a higher risk of some cancers.
Cancer Effects
Increased risk of some cancers, including prostate, kidney, and testicular cancers.
Weight Effects
Increased cholesterol levels and/or risk of obesity.
Immune Effects
Reduced ability of the body’s immune system to fight infections.
Developmental Effects
Low birth weight, accelerated puberty, bone variations, or behavioral changes.
Reproductive Effects
Decreased fertility or increased high blood pressure in pregnant women.
The more we learn about PFAS chemicals, the clearer it becomes that some of them can cause health risks—even at very low levels. That’s why banning PFAS in period underwear is so important. Some brands (including us) use only safe, PFAS-free materials in every layer of our period underwear and carefully test our products to make sure they meet strict health and safety standards.
Why PFAS is Used in Period Underwear?
A study published in Environmental Science & Technology Letters2 tested 59 reusable feminine hygiene products from North America, South America, and Europe. The results showed that many of these products contained PFAS, and almost 30% had levels that suggest PFAS were added on purpose. Period underwear had the highest number, with 33% of samples showing high PFAS levels—some even above 1000 ppm. These levels are often linked to PFAS used in waterproof coatings. The U.S. Environmental Protection Agency (EPA) has also warned that PFAS stay in the body and the environment for a long time and may cause health problems, even at low levels. This makes the use of PFAS in intimate products a serious concern.
| Product Category | Number of Products Tested | % with Intentional PFAS Use | % with PFAS Detected | Most Abundant PFAS Compounds | Key Finding |
|---|---|---|---|---|---|
| Period Underwear | 59 (across 5 categories) | 33% | 100% (of 19 selected) | 6:2 and 8:2 Fluorotelomer Alcohols | PFAS use is unnecessary |
| Reusable Pads | 59 (across 5 categories) | 25% | 100% (of 19 selected) | 6:2 and 8:2 Fluorotelomer Alcohols | PFAS use is unnecessary |
| Other Categories* | 59 (across 5 categories) | At least one product in each category | 100% (of 19 selected) | 6:2 and 8:2 Fluorotelomer Alcohols | PFAS use is unnecessary |
Some companies add PFAS as a coating to make the fabric more stain- or water-resistant and it can also help materials absorb liquid more quickly. However, because PFAS don’t break down, they can build up in the world around us—and in our bodies.
Some manufacturers may not know they are using PFAS because these chemicals can come from treated fabrics or other raw materials. However, research shows that many period products work just as well without PFAS. There are safer, non-toxic materials that can provide the same level of leak protection and comfort. That’s why more people are now choosing period underwear without PFAS—to protect both their health and the environment.
New laws around the world are moving quickly to ban PFAS, especially in places like France, Denmark, and several U.S. states such as California, New York, Colorado, Maine, and Iowa. These changes are pushing more manufacturers to switch to PFAS-free materials. At the same time, more people now look for clear product labels and third-party certifications when buying period underwear. This shows how important it is for brands to be honest and open about what’s in their products.
How to Spot Non Toxic Period Underwear
As a professional manufacturer of period underwear, we have rich experience in helping you choose non toxic period underwear. Here are the main ways to check:
Read the Labels Carefully
Consumers should always start by carefully reading the product label. A good label on non toxic period underwear should clearly list the materials used in each layer and avoid vague terms like “functional lining” or “technical fabric.” Look out for words like “fluoro” or “perfluoro,” which are red flags for PFAS. Most responsible brands will clearly state “PFAS-free” on the packaging if their products are truly safe.
Check for Certifications
Shoppers should look for trusted third-party certifications to make safer choices. Period underwear without PFAS that has been certified by OEKO-TEX® Standard 100, GOTS, or Made Safe is more likely to meet international health and safety standards. These labels show that the product has been tested and is free from harmful substances like PFAS.
Research the Brand
Before buying, it’s a good idea to visit the brand’s website and read their product descriptions or FAQs. Responsible brands that sell PFAS free period underwear are usually open about the materials they use, how the products are made, and whether they avoid harmful chemicals like PFAS. This kind of transparency helps you make a safer and smarter choice.
Call the Manufacturer
If there’s no clear answer online, people can directly contact the manufacturer. Honest suppliers of period underwear with no PFAS are often willing to explain how their products are made and which chemicals are avoided.
PFAS Labeling in PFAS Free Period Underwear: What’s the Problem?
In the United States, there are currently no federal rules that require companies to list PFAS in menstrual products. While some people assume all period products are fully tested and labeled, that’s often not the case. The FDA classifies these items as medical devices, which means they don’t follow the same strict labeling laws as most personal care products. Brands can choose to list ingredients, but they’re not required to. This makes it hard for shoppers to know if a product contains harmful substances like PFAS.
Only a few states, such as New York and California, have started to change this. For example, New York passed a law in 2021 that requires companies to list all ingredients added on purpose. Similar laws are appearing in other states, but most areas still have no clear rules.
How Clear Labels and Certifications Can Help
When brands share full ingredient lists and avoid confusing language, it builds trust. More importantly, it helps people make informed choices. Third-party certifications also play a key role. A PFAS-Free Certification, for example, means that a product has been tested carefully—often through methods like total organic fluorine screening—and proven to be free from PFAS.
These certifications don’t just help consumers. They also support retailers and business partners who want to avoid health risks and legal issues. In the absence of strong national rules, transparency and independent testing are the best tools we have to protect both individual health and public safety.
Safer Ways to Produce Period Underwear Without PFAS
Some period underwear brands still use PFAS to stop leaks, but safer materials can do the job just as well—without the risks. Polyester is one of the best examples. This fabric is known for its strong absorbency. In fact, studies have shown that polyester can absorb up to 816% of its own weight in distilled water3. This is possible because of its special structure, which allows water to fill the tiny spaces in the fabric.
When combined with a soft, flexible barrier layer—like polyurethane or TPU—polyester can provide excellent leak protection without using any harmful chemicals. That’s why more manufacturers are now choosing PFAS-free solutions that keep you dry and safe at the same time.
Main Fabrics for Non Toxic Period Underwear
When it comes to what you wear during your period, comfort and safety matter. That’s why many brands are turning to cleaner, skin-friendly fabrics that feel good and do good—for your body and the planet. Here are four great material options that go beyond the basics:
Soft and breathable, organic cotton is gentle on sensitive skin and grown without harmful chemicals.
Smooth and airy, bamboo fabric controls moisture and odor naturally for a fresh, dry feel.
Durable and eco-friendly, hemp is breathable, absorbent, and needs little water or pesticides to grow.
Made from beech trees, modal is extra soft and helps keep you dry and comfortable all day.
Good Design for PFAS Free Period Underwear
Some period underwear without PFAS use smart features to improve leak protection—without harmful chemicals. A heat-pressed waterproof layer and special edge sealing help lock in liquid and stop side leaks. The multi-layer structure absorbs fast and holds up to 40ml, about the same as 4 tampons (different styles, designs, and fabrics may offer different levels of absorbency). The side leak barrier gives you extra protection where it matters most. With non toxic period underwear like this, you can stay dry, safe, and worry-free.
- Trusted by over 200,000 happy users.
- Unique patent for leakproof performance.
- 12-hour leak-free wear.
- No PFAS Chemicals.
Check All Materials – From Fabric to Finish
To make truly non toxic period underwear, it’s not enough to only focus on the final product. PFAS and other harmful chemicals can enter the process much earlier—through treated fabrics or other raw materials. That’s why we take extra steps to keep them out at every stage.
Safe Fabrics from Trusted Suppliers.
We work only with textile mills that follow strict chemical safety rules. All incoming fabrics are checked to make sure they haven’t been treated with PFAS or other dangerous coatings.
Ask for Full Material Records.
Our suppliers must share test reports and chemical use statements. This helps us trace every part of the material and confirm it meets our standards.
Test Samples before & after Production.
To make sure no PFAS sneak in during the process, we do third-party lab tests on both raw materials and finished products.
Train Our Partners.
We work closely with factories and fabric suppliers to help them understand PFAS risks and how to avoid them. That way, we stay aligned at every step.
Transparent Fabric Labeling Builds Trust
As a factory, we believe that honesty starts with the label. We provide clear and complete fabric details for every style of period underwear without PFAS. This includes the full breakdown of all layers, not just the outer fabric. We never hide behind vague terms like “technical layer” or “functional core.” By sharing the real names and sources of our materials, we give our clients and their customers the confidence to choose truly non toxic period underwear. Transparency is not just good marketing—it’s our responsibility.
Certifications Prove It
GRS
GOTS
OEKO-TEX®
BSCI
FDA
Conclusion
Choosing period underwear without PFAS is more than a trend—it’s a safer, smarter way to care for your body. With growing concerns about harmful chemicals in everyday products, it’s important to pick materials and brands you can trust. From organic cotton to bamboo and hemp, natural fabrics offer comfort and protection without the risks. By using non-toxic designs, careful fabric testing, and PFAS-free production methods, more brands are now creating non toxic period underwear that puts your health first—without giving up comfort or performance.
References:
1.PFAS Explained. Retrieved from https://www.epa.gov/pfas/pfas-explained.
2.Per- and Polyfluoroalkyl Substances in Reusable Feminine Hygiene Products. Retrieved from https://pubs.acs.org/doi/10.1021/acs.estlett.5c00553.
3.Araujo, M. F., et al. (2015). Characterization of natural and synthetic fabrics for the treatment of complex wastes. PubMed Central. Retrieved from https://pmc.ncbi.nlm.nih.gov/articles/PMC10780343/
