Natural Biodegradable Silk Floss

Want a biodegradable, plastic-free dental floss made with simple, natural ingredients? RADIUS Silk Floss® is a natural dental floss crafted from pure silk and coated in organic coconut oil and carnauba wax for a smooth, comfortable glide. Designed to gently remove plaque while soothing gums, it delivers an effective clean
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Natural silk is gentle on gums + tough on plaque
Coated in organic coconut oil + carnauba wax for a smooth glide
PFAS-free, plastic-free, toxin-free dental floss
Biodegradable floss packaged in a recyclable eco-carton

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  • Estimated Delivery:Jul 01 - Jul 05

  • Free USA Shipping: On all orders over $35

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Benefits

Silk Floss offers an alternative to traditional nylon floss, combining effective plaque removal with simple, clean ingredients. The fine silk fibers glide smoothly between teeth to lift plaque and debris, while organic coconut oil and organic carnauba wax help reduce friction and support a cleaner mouth. Gentle on gums yet effective for daily use, it’s an easy upgrade from conventional floss—especially for those seeking a more natural or biodegradable alternative.

Materials

  • Floss: Pure silk
  • Coating: Organic coconut oil + organic carnauba wax
  • Flavor: Unscented
  • Length: 30m / 33yd (2+ month supply)
  • Free from: PFAS, PTFE, preservatives, artificial sweeteners, GMOs, unnatural coloring, phthalates, parabens, gluten, and other unnecessary additives.
  • Packaging: Eco-carton dispenser, 100% recyclable and plastic-free
  • Manufacturing: Made in the USA

Sustainability

RADIUS Silk Floss™ was designed as an alternative to conventional plastic dental floss that can take decades to break down.

  • Plastic-free floss and packaging
  • 100% biodegradable floss
  • 100% recyclable packaging
  • Manufactured in the USA 
  • Produced by a Certified B Corporation focused on reducing waste and toxins

30-Day Guarantee

We stand behind every RADIUS product. If you don’t fall in love within 30 days, return it for a full refund, no questions asked.

Shipping Info

All orders ship in recyclable packaging. Free U.S. shipping on orders $35+. Learn more in our Shipping Policy.

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FAQs Reviews

More Amazing Details

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Silk for a Softer Clean

Pure silk fibers create a natural dental floss that gently removes plaque while feeling softer and more comfortable on gums than synthetics.

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Naturally Smooth Glide

An organic coconut oil and carnauba wax coating provides an easy glide between teeth, reducing friction and improving comfort while flossing.

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100% Plastic-Free by Design

From the silk thread to the short ingredient list and eco-carton packaging, every detail is designed to reduce waste while maintaining everyday functionality.

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Frequently Asked Questions

Answers to common questions to help you understand things better.

Is silk floss vegan?

Because silk is harvested from silkworm cocoons, this floss is not considered vegan. For a vegan alternative, try our Vegan Sponge Floss.

Is silk floss biodegradable?

Yes. Silk floss is biodegradable and compostable, unlike traditional nylon floss.

Is RADIUS Silk Floss PFAS-free?

Yes, it is completely PFAS-free and made without synthetic coatings like PTFE.

How does silk floss compare to traditional nylon dental floss?

Silk floss tends to feel gentler on gums and is biodegradable, whereas nylon floss is plastic-based and can take decades to break down. Because silk is a natural material, it may feel slightly more delicate in tight spaces—we recommend using shorter lengths and moving to a fresh section as needed.

Does this floss contain any artificial ingredients?

No - only natural silk, organic coconut oil, and organic carnauba wax.