Most people don’t think twice about their watch band. It’s a simple accessory—something you wear daily, rarely take off, and trust to be safe. But what if the very thing tracking your health was working against it?

Apple and Samsung are facing class-action lawsuits over their smartwatch bands, claiming that certain models contain PFAS—also known as “forever chemicals.” These toxic compounds are linked to hormone disruption, immune dysfunction, and even long-term health risks like cancer. And because smartwatch bands are worn directly against the skin for hours, these chemicals could be leaching into your body daily.

If you wear a smartwatch with a synthetic band, it’s time to take a closer look at what it’s made of—and whether it’s silently sabotaging your health.

What Are PFAS, and Why Are They a Problem?

PFAS (per- and poly-fluoroalkyl substances) are a class of synthetic chemicals widely used in consumer products for their water-resistant, oil-resistant, and nonstick properties. They’re found in everything from fast food packaging to nonstick cookware to stain-resistant fabrics. The problem? They don’t break down in the environment or in the human body, which is why they’re known as “forever chemicals.”

Research has linked PFAS exposure to a long list of health concerns, including:

• Hormone disruption – PFAS can interfere with endocrine function, impacting everything from thyroid health to testosterone and estrogen balance.^[1]
• Immune suppression – Studies have shown that PFAS exposure can weaken the immune system, making the body more susceptible to infections and chronic inflammation.^[2]
• Cancer risk – PFAS have been associated with increased risk of certain cancers, particularly kidney, liver, and testicular cancers.^[3]
• Reproductive harm – Prenatal exposure to PFAS has been linked to lower birth weights, developmental issues, and fertility problems.^[4]

The fact that these chemicals are in smartwatch bands—products worn directly against the skin for long periods—makes the risk even more concerning.

The Class-Action Lawsuit Against Apple and Samsung

Apple and Samsung are under legal scrutiny due to claims that their smartwatch bands contain undisclosed PFAS chemicals. The lawsuit specifically names Apple’s Nike Sport Band and various Samsung Galaxy smartwatch bands. The concern isn’t just that PFAS were found—it’s that these companies didn’t disclose their presence to consumers, leaving people unknowingly exposed to toxic materials.^[5]

The lawsuit highlights:

• Skin irritation and allergic reactions – Many users have reported unexplained rashes, burns, and irritation from wearing these bands.
• Prolonged exposure concerns – Because smartwatch bands are worn for extended periods, they increase the likelihood of PFAS absorption through the skin.
• Lack of transparency – Apple and Samsung have yet to address whether PFAS were intentionally used or if they resulted from manufacturing processes.

If you own a smartwatch, you might be unknowingly exposing yourself to PFAS every time you wear it.

How PFAS Can Enter the Body Through Your Watch Band

Unlike water bottles or cookware, which involve intermittent exposure to PFAS, a smartwatch band presents a direct and continuous point of contact. The chemicals can enter the body through:

• Sweat and friction – Heat and sweat can break down synthetic materials, allowing PFAS to leach out and absorb through the skin.
• Micro-abrasions – Small cuts or scrapes (even those you can’t see) can provide an easy entry point for chemicals.
• Daily wear and tear – As the band degrades over time, it may release even more of these harmful compounds.

Considering that most people wear their smartwatch bands 24/7—including while exercising, showering, and sleeping—it’s a constant source of exposure.

Safer Alternatives: What to Wear Instead

If you have a synthetic smartwatch band, it’s time to swap it out for a safer option. The best alternatives include:

• Leather – A natural, breathable material that won’t leach toxic chemicals. Look for full-grain, vegetable-tanned leather rather than chemically treated versions.
• Stainless steel – A durable and non-toxic alternative that doesn’t contain harmful coatings or plasticizers.
• Fabric bands (without PFAS coatings) – Some companies make woven bands that are free from chemical treatments. Be sure to verify that the materials are truly non-toxic.

If you’re not sure whether your smartwatch band is part of the lawsuit, check with Apple or Samsung, or opt for a verified non-toxic replacement just to be safe.

Detoxing Your Daily Wear: A Small Change With a Big Impact

Most of us focus on detoxing our food, water, and personal care products, but what we wear daily matters just as much. A toxic watch band might seem like a small concern, but prolonged exposure to PFAS can add up over time.

The good news is that this is an easy fix. Replacing a synthetic watch band with a non-toxic material is one of the simplest steps to reduce your daily chemical load. And if you know someone who wears a smartwatch, share this information with them—because no one should have to choose between convenience and health.

My Go-To Smart Watch Band

• Leather
• Metal

References:

1. Swenberg, James A., et al. “Formaldehyde Carcinogenicity Research: 30 Years and Counting for Mode of Action, Epidemiology, and Cancer Risk Assessment.” Toxicologic Pathology, vol. 41, no. 2, Feb. 2013, pp. 181–89.
2. Bline, Abigail P., et al. “Public Health Risks of PFAS-Related Immunotoxicity Are Real.” Current Environmental Health Reports, vol. 11, no. 2, 2024, pp. 118–27.
3. Seyyedsalehi, Monireh Sadat, and Paolo Boffetta. “Per- and Poly-Fluoroalkyl Substances (PFAS) Exposure and Risk of Kidney, Liver, and Testicular Cancers: A Systematic Review and Meta-Analysis.” La Medicina Del Lavoro, vol. 114, no. 5, 2023, p. E2023040.
4. Szilagyi, John T., et al. “Perfluoroalkyl Substances (PFAS) and Their Effects on the Placenta, Pregnancy and Child Development: A Potential Mechanistic Role for Placental Peroxisome Proliferator-Activated Receptors (PPARs).” Current Environmental Health Reports, vol. 7, no. 3, Sept. 2020, pp. 222–30.
5. PFAS Lawsuits Involve Apple Watch Bands, Samsung Galaxy Watch Bands, and Hershey’s Chocolate Wrappers.” JD Supra, https://www.jdsupra.com/legalnews/pfas-lawsuits-involve-apple-watch-bands-8451962/. Accessed 27 Feb. 2025.