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The Best PFAS-Free and Non-Toxic Dental Floss

We vetted dental floss against the Welpr Standard and here are our top picks.

Camille May

Camille May

Cofounder & Product Curator

Olushola M. Awoyemi

Olushola M. Awoyemi

Medical Reviewer, PhD

Here's what we look for:

  • Confirmed PFAS-free with natural coatings like beeswax or plant-based waxes
  • Silk or nylon construction, with silk preferred when available
  • Transparent sourcing, materials, and manufacturing practices

The Best PFAS-Free Dental Floss

On Welpr, terms like "non-toxic," "safer," "cleaner," "healthier," and "vetted" are editorial labels based on our own standard for product assessment. They are not guarantees, certifications, or medical claims. Learn more.

Davids Expanding Dental Floss

Meets the Welpr Standard

Top Pick

Davids

Expanding Dental Floss

Free From
Cruelty Free, Dye Free, Fluoride Free, Paraben Free, PFAS Free
Certified
Leaping Bunny
Highlights
Cruelty-free, Refillable, Recycled materials, String floss, Expanding, Mint

8.8

Performance score

Where to buy

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Bambo Earth Mint Dental Tooth Lace Floss With Refillable & Reusable Glass Holder

Meets the Welpr Standard

Budget Pick

Bambo Earth

Mint Dental Tooth Lace Floss With Refillable & Reusable Glass Holder

Free From
Cruelty Free, PFAS Free
Highlights
Vegan, Cruelty-free, Recyclable packaging, Compostable packaging, Refillable, Recycled materials, Money-back guarantee, String floss, Waxed, Mint

7.0

Performance score

Where to buy

RiseWell Scrubby Floss

Meets the Welpr Standard

RiseWell

Scrubby Floss

Free From
Cruelty Free, Dye Free, Gluten Free, Paraben Free, PFAS Free, PFOA Free, Teflon (PTFE) Free
Highlights
Hydroxyapatite infused, Expanding design, Gently removes plaque, Natural wax coating, Smooth glide, Made in Italy

8.6

Performance score

Where to buy

Terra & Co. Brilliant Black Dental Floss

Meets the Welpr Standard

Terra & Co.

Brilliant Black Dental Floss

Free From
Cruelty Free, PFAS Free, Plastic Free
Certified
PETA Certified
Highlights
Vegan, Cruelty-free, Recyclable packaging, Recycled materials, String floss, Waxed, Mint

8.4

Performance score

Where to buy

Radius Peppermint Dental Floss

Meets the Welpr Standard

Radius

Peppermint Dental Floss

Free From
Gluten Free, PFAS Free
Certified
Certified B Corp
Highlights
Vegan, Cruelty-free, Plastic-free packaging, Recyclable packaging, Money-back guarantee, String floss, Waxed, Mint

8.3

Performance score

Where to buy

Desert Essence Tea Tree Dental Floss

Meets the Welpr Standard

Desert Essence

Tea Tree Dental Floss

Free From
Cruelty Free, Fluoride Free, Gluten Free, PFAS Free
Certified
Certified B Corp, Leaping Bunny
Highlights
Cruelty-free, Made in USA, String floss, Waxed, Tea tree

8.2

Performance score

Where to buy

Primal Life Organics Dental Floss

Meets the Welpr Standard

Primal Life Organics

Dental Floss

8.2

Performance score

Where to buy

Better & Better Natural Floss in Refillable Glass Jar

Meets the Welpr Standard

Better & Better

Natural Floss in Refillable Glass Jar

8.1

Performance score

Where to buy

Boka Cinna Mint Woven Dental Floss

Meets the Welpr Standard

Boka

Cinna Mint Woven Dental Floss

Free From
BPA Free, Cruelty Free, Gluten Free, PFAS Free
Highlights
Vegan, Cruelty-free, String floss, Waxed, Cinnamon

8.0

Performance score

Where to buy

How to Swap to Non-Toxic dental floss:

Here's how to swap to non-toxic dental floss:

What to know about dental floss

Most conventional dental floss is coated with PFAS-based compounds (the same family of chemicals found in nonstick cookware) to help it glide between teeth. Because floss goes directly in your mouth and is used daily, what it's made of and coated with deserves a close look.

  • PFAS coatings are common on floss labeled as "glide" or "smooth" — these synthetic coatings can leave residue in your mouth with every use.
  • Welpr only approves floss that is confirmed PFAS-free and made with simple, transparent materials.

Check the floss you already use

Take a look at the floss you have at home. Check the packaging for any mention of materials, coatings, or ingredients. Floss that advertises a "glide" texture or slick feel is more likely to use PFAS-based coatings.

  • Look for terms like PTFE, Teflon, or "smooth glide" on the label — these typically indicate PFAS coatings.
  • If the packaging doesn't list materials or coatings at all, that lack of transparency is worth noting.

Use your current floss more mindfully

If you're not ready to replace your floss right away, that's okay. Flossing with what you have is still better than not flossing at all. A small adjustment can reduce how much coating residue stays in your mouth.

  • Rinse your mouth with water after flossing to help clear any residue left behind.
  • Prioritize replacing your floss before other oral care products since it sits directly against gum tissue, which absorbs readily.

Choose cleaner floss

Look for floss that is confirmed PFAS-free and made from simple, clearly listed materials. Natural options like silk floss or plant-based fibers coated with natural waxes (such as beeswax or candelilla wax) tend to be the cleanest choices.

  • Choose floss with a short, transparent ingredient list — natural wax coatings, no synthetic fragrances, and no undisclosed blends.
  • Click the button above to shop Welpr Approved dental floss.
Camille May

Camille May

Cofounder & Product Curator

Camille May is the co-creator of Welpr and a guide for clean living. After selling her last company in the health food space, she went non-toxic while working to heal an autoimmune condition....

Olushola M. Awoyemi

Olushola M. Awoyemi

Medical Reviewer, PhD

Olushola M. Awoyemi (aka Shola) is a board-certified toxicologist and a research scientist with a PhD in Environmental Toxicology. Shola's long-term ambition is to be recognized as a world-renowned expert in toxicology,...