PFAS in tapes and skin products: what to know

PFAS are a large family of long-lasting chemicals used in everything from nonstick pans to stain-resistant fabrics and some cosmetics. Some of them are linked to health effects, but they aren't all alike, and EPA says only a small amount gets into the body through skin. For a product you wear overnight, the useful question is what a PFAS-free claim actually covers.

Here's what the government agencies that study PFAS say, and how to read the claims you'll see on tapes and skin products.

What are PFAS?

PFAS stands for per- and polyfluoroalkyl substances. NIEHS describes them as a large, complex group of synthetic chemicals used in consumer products around the world since about the 1950s. Their molecules have a chain of linked carbon and fluorine atoms, and because the carbon-fluorine bond is one of the strongest, these chemicals don't degrade easily in the environment.

There are a lot of them. NIEHS puts the number at nearly 15,000, based on an EPA chemicals database, and FDA says more than 15,000. EPA describes PFAS as widely used, long lasting chemicals whose components break down very slowly over time.

Why do people worry about them?

People worry about PFAS mainly because they're everywhere and they last. EPA says many PFAS are found in the blood of people and animals all over the world. NIEHS cites a CDC report using national survey data that found PFAS in the blood of 97% of Americans. It also notes that blood levels of PFOS and PFOA, two older PFAS, have fallen since they were removed from consumer products in the early 2000s.

EPA says current peer-reviewed studies show that exposure to certain levels of PFAS may lead to effects including reduced vaccine response, interference with hormones, higher cholesterol, developmental effects in children and an increased risk of some cancers. Exposure isn't the same for everyone. EPA says industrial workers who make or process PFAS, and people who live near PFAS-producing facilities, may have greater exposure. It adds that children may be more sensitive because they're still developing, and they can take in more relative to body weight because they drink more water, eat more food and breathe more air per pound than adults.

EPA also says these effects are hard to pin down, because there are thousands of PFAS and most studies focus on a limited number of the better known ones.

Where are PFAS found?

EPA's list of sources includes stain and water repellents on carpets, upholstery and clothing, nonstick cookware, grease-resistant food packaging, drinking water in some areas and personal care products such as certain shampoos, dental floss and cosmetics.

FDA says certain PFAS are intentionally added to some cosmetics, including lipsticks, eyeshadows and moisturizers, to condition and smooth the skin or change a product's texture. Some can also show up unintentionally through raw material impurities. Cosmetics sold at retail must list ingredients in descending order of predominance, and FDA names polytetrafluoroethylene (PTFE) among the common PFAS ingredients it has seen.

Can PFAS get in through the skin?

PFAS can get in through the skin, but skin contact appears to be a minor route. In its advice on drinking water, EPA says only a small amount of PFAS can get into your body through your skin, so showering and bathing in water with PFAS are unlikely to significantly raise your risk. EPA and NIEHS both describe the main routes as drinking contaminated water, eating certain foods and breathing air containing PFAS, along with using products made with them.

There are gaps, though. FDA's December 2025 report on PFAS in cosmetics found significant data gaps, including a lack of dermal absorption data and an absence of dermal toxicity data. So it's fair to say skin is not a main route, and also fair to want products you wear for hours on your face to leave PFAS out.

What about PFAS in medical tapes and dressings?

FDA makes a clear distinction for PFAS in medical tapes and dressings. It says the PFAS used in medical devices are often fluoropolymers, plastics made of large molecules that are part of the PFAS family and have been used safely for decades. It lists tubing and wound dressings among the devices that use them.

According to FDA, fluoropolymers are typically too large to cross cell membranes and are very unlikely to cause toxicity. It says the small-molecule PFAS are the ones linked to health concerns and found in drinking water, and that there is no reason to restrict fluoropolymers in medical devices. FDA also says it regulates devices as finished products, not the individual materials in them. Our guide to what mouth tape is made of covers the materials themselves.

How do you read a PFAS-free claim?

To read a PFAS-free claim, ask which PFAS were tested, with what method and by which lab. We didn't find any government testing of mouth tape for PFAS, so brand testing is what you have to go on. Two things help.

First, know that lab tests differ. EPA's Method 1633A tests for 40 specific PFAS compounds in samples such as water, soil and tissue. Its Method 1621 takes a broader approach and measures the overall amount of organic fluorine in water samples, which can screen for thousands of known PFAS at once but can't say which ones are present. Neither is a standard for tape, and a result depends on which PFAS a lab looked for.

Second, know what the FTC expects. Its Green Guides, which cover environmental marketing, say it's deceptive to misrepresent that a product is free of a substance. They also say a free-of claim can still mislead if the substance has never been associated with the product category, and that a claim can be fine with a trace amount if it's at background levels, causes no material harm and wasn't added on purpose.

So the questions to ask a brand are simple. Which PFAS did you test for, with what method, and did an outside lab do it? Our article on what "third-party tested" means goes further, and nine signs of a mouth tape brand worth trusting puts it in a wider checklist.

How else can you cut your exposure?

You can cut your PFAS exposure most through drinking water, since tape is a small part of the picture. EPA's practical advice centers on drinking water: ask your water utility whether it has tested for PFAS, use a state-certified lab if you test a private well, and consider a filter certified to lower PFAS. For household products, EPA points people with questions to the Consumer Product Safety Commission. For cosmetics, FDA suggests reading ingredient labels.

Should PFAS stop you from trying mouth tape?

No, PFAS shouldn't stop you from trying mouth tape. Mouth tape is a light, external product, and choosing one made for skin from a brand that's specific about testing is a reasonable step. Start with the nose test to check your nasal airflow, and read is mouth taping safe? and mouth tape skin irritation if you have sensitive skin.

Our pick (paid partner)

If PFAS testing matters to you, our pick is the Titan Bamboo Silk Mouth Tape, and Titan says every batch is third-party tested and certified PFAS-free. This is our recommendation, not the result of testing or ranking products ourselves.

Titan also says the tape has no printed ink on the side that touches skin and comes with a 30-night guarantee. More guides are on our mouth tape topic page.

Read next

• What mouth tape is made of
• Is mouth tape regulated?
• Mouth tape and skin irritation

* This content is for informational and educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure or prevent any disease or health condition. Talk to a qualified healthcare provider about your health.