When you think about harmful products in your daily routine, dental floss probably doesn’t come to mind. After all, flossing is a crucial part of oral hygiene, and dentists recommend it to prevent gum disease and tooth decay. But what if the floss you’re using introduces harmful toxins into your body? This is one of the hidden dangers of dental floss. A closer look at many popular dental floss brands reveals a disturbing truth: they often contain harmful materials and coatings that can negatively impact your health. From ‘forever chemicals’ to petroleum-based waxes, here’s what you need to know about your floss—and how to choose safer alternatives.

The Hidden Dangers of Conventional Dental Floss

Most conventional dental flosses are made with synthetic materials and chemical coatings that seem harmless but carry significant risks when used daily. Here’s a breakdown of the most concerning issues:

1. Teflon (PFAS) Fibers

Many popular floss brands, including Oral-B Glide, use polytetrafluoroethylene (PTFE)—a type of Teflon—to make the floss glide easily between teeth. PTFE belongs to a class of chemicals called per- and poly-fluoroalkyl substances (PFAS), often referred to as ‘forever chemicals’ because they don’t break down in the environment or the body. A recent study found that women who regularly used Oral-B Glide had significantly higher levels of PFAS in their blood.^[1] These chemicals have been linked to:

• Liver damage
• Hormone disruption
• Immune system suppression
• Increased risk of certain cancers

2. Nylon and Polyester Fibers

If your floss isn’t made with Teflon, chances are it’s made with nylon or polyester. These synthetic materials can release microplastics into your body during flossing. Over time, microplastic exposure has been associated with systemic inflammation and potential endocrine disruption.^[2]

3. Petroleum-Based Coatings

Many brands coat their products with wax to make floss glide smoothly. Unfortunately, this wax is often petroleum-based, introducing more synthetic chemicals into your mouth. Prolonged exposure to petroleum-based products has raised concerns about long-term health risks, including hormone disruption.^[3]

4. Chemical Fragrances

Some flosses add fragrances to make the product more appealing. These fragrances are often synthetic and contain phthalates, another group of endocrine-disrupting chemicals. Phthalates have been linked to reproductive and developmental health issues.^[4]

The Health Risks of Conventional Flossing Materials

The cumulative effect of using toxic dental floss daily is concerning. While flossing is essential for oral health, exposure to Teflon, microplastics, petroleum, and synthetic fragrances introduces a cocktail of chemicals into your body. Over time, this exposure can contribute to:

• Chronic inflammation
• Hormonal imbalances
• Immune dysfunction
• Increased toxic burden on the liver and kidneys

Safer Alternatives to Toxic Dental Floss

The good news is that you don’t have to stop flossing—you just need to choose a safer option. Here’s what to look for when shopping for non-toxic dental floss:

1. Natural Materials

Opt for floss made from biodegradable, natural materials like silk or bamboo. These materials don’t shed microplastics or contain harmful chemicals.

2. Non-Toxic Coatings

Look for floss coated with natural waxes like beeswax or candelilla wax. These provide smoothness without introducing petroleum-based compounds.

3. Unflavored or Naturally Flavored Floss

Choose floss that is either unflavored or uses natural essential oils for flavor. This avoids exposure to synthetic fragrances and phthalates.

4. Eco-Friendly Packaging

Many safer floss brands also prioritize sustainable packaging, avoiding plastic containers for glass or cardboard.

Recommended Non-Toxic Floss Brands

To make your search easier, here are a few brands that meet the criteria for safer flossing:

• Dental Lace: Made from 100% silk with a beeswax coating, this floss is biodegradable and comes in refillable glass containers.
• TreeBird Floss: Bamboo-based and coated with candelilla wax, this option is vegan and eco-friendly.
• Radius Organic Silk Floss: Made from silk and infused with natural coconut oil for a smooth glide.
• Smart Floss by Dr. Tung’s: Though not made of silk, it’s free of Teflon and coated with natural plant-based wax.

Why Flossing Matters—The Right Way

Flossing is essential to maintaining good oral hygiene, but it shouldn’t come at the expense of your health. The materials and coatings used in conventional dental floss may do more harm than good, exposing you to toxins that can build up in your body over time. Switching to non-toxic floss made from natural materials is a simple change that can significantly reduce exposure to harmful chemicals. Combined with a focus on using non-toxic toothpaste and mouthwash, this small step can greatly impact your overall health.

Final Thoughts

The next time you reach for your floss, take a moment to think about the hidden dangers of dental floss and what you’re putting in your mouth. The convenience of conventional floss isn’t worth the long-term health risks. With so many safer alternatives now available, there’s no reason to stick with toxic options. Your oral health routine should support your well-being, not undermine it. By choosing non-toxic dental floss, you’re committing to better health and a cleaner environment. Small changes like these greatly reduce your exposure to harmful chemicals and improve your daily habits.

References:

1. Boronow, Katherine E., et al. “Serum Concentrations of PFASs and Exposure-Related Behaviors in African American and Non-Hispanic White Women.” Journal of Exposure Science & Environmental Epidemiology, vol. 29, no. 2, 2019, pp. 206–17.
2. Campanale, Claudia, et al. “A Detailed Review Study on Potential Effects of Microplastics and Additives of Concern on Human Health.” International Journal of Environmental Research and Public Health, vol. 17, no. 4, Feb. 2020, p. 1212.
3. Kassotis, Christopher D., et al. “Endocrine-Disrupting Chemicals and Oil and Natural Gas Operations: Potential Environmental Contamination and Recommendations to Assess Complex Environmental Mixtures.” Environmental Health Perspectives, vol. 124, no. 3, Mar. 2016, pp. 256–64.
4. Wang, Yufei, and Haifeng Qian. “Phthalates and Their Impacts on Human Health.” Healthcare, vol. 9, no. 5, May 2021, p. 603.