Radius · Dental Floss
Radius Floss
Lower-concern floss option, natural materials, but no explicit PFAS disclosure.
Radius Floss is marketed as plant-based and vegan, avoiding traditional Teflon-type coating-coated dental floss that commonly contains PFAS. The brand does not disclose PFAS status or hold third-party certifications for PFAS-free claims.
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Vegan plant-based wax or natural fibers (brand uses non-Teflon-type coating formulations)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Radius Floss uses plant-derived wax coatings and natural fibers (often candelilla wax or similar vegetable waxes) rather than synthetic Teflon-type coating or polyethylene. This formulation eliminates the risk of Teflon-family coating fume exposure during manufacturing and disposal, and avoids petroleum-based plastisol coatings. The vegan positioning means no animal-derived glycerin or shellac, reducing potential allergen load for sensitive users. Natural wax coatings are biodegradable and pose minimal systemic toxicity if ingested in small amounts during flossing.
The brand's record and disclosure
Radius is known for transparency in material sourcing and publishes ingredient lists on packaging; the brand emphasizes sustainability and non-toxic formulations across its oral care line. No recalls, safety complaints, or documented product liability issues appear in public health databases or consumer safety records for Radius Floss. The brand does not make explicit PFAS-free claims in published materials, though the absence of Teflon-type coating and synthetic coatings makes PFAS presence unlikely. Third-party certifications (e.g., vegan, non-GMO status) are available but formal safety testing results are not publicly disclosed.
How it compares in its category
Most conventional floss uses polyethylene or Teflon-type coating (Teflon-coated), which carry minimal ingestion risk but raise manufacturing/disposal concerns. Silk floss is a traditional alternative but not vegan and may carry sericide concerns. Radius's plant-wax formulation sits in a small premium segment alongside brands like Unwaxed Dental Floss and other eco-conscious alternatives; it avoids synthetic polymer hazards while maintaining similar functional performance (gliding, shredding resistance). No independent comparative safety data exists between plant-wax and conventional floss formulations.
If you buy it
Use it as you would any standard floss: gently between teeth and below the gumline, using a fresh section for each gap. Store in a cool, dry place to prevent wax degradation; the plant-wax coating may soften in extreme heat but poses no safety risk. Replace the spool every 3-6 months or when the wax coating appears worn or discolored. If gums bleed or sensitivity develops, consult a dentist; this is not a product-specific concern but a general oral health indicator.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Wax coating degradation and ingestion
Plant-derived waxes are metabolically inert and non-toxic in small quantities if swallowed during flossing; no documented incidents of poisoning or gastrointestinal distress from Radius Floss or similar plant-wax formulations.
Natural fiber allergenicity
Plant-derived fibers and waxes (e.g., candelilla, carnauba) may trigger contact allergies in individuals with sensitities to botanical compounds; documented cases are rare but users with known plant allergies should patch-test or consult a dentist first.
Microbial contamination during storage
Natural wax coatings are not antimicrobial and may support mold or bacterial growth if stored in humid conditions; however, the brief contact time during use and dry home storage make clinical risk negligible.
Heavy metals in natural wax sources
Plant waxes can bioaccumulate soil contaminants; Radius does not publish heavy metal testing data, but no recalls or contamination warnings have been issued for Radius Floss products.
Fragrance or essential oil additives
Some variants may include mint or other flavorings; Radius discloses these on packaging and no allergen complaints are on record, though individuals with fragrance sensitivity should verify the specific variant composition.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Dental Floss
Cocofloss
Refill Trio
Coconut fiber, based floss with plant-based coating
Lower-concern dental product; natural materials and transparent PFAS stance, but no independent verification.
⚠Risky category by default
Dental Lace
Refillable Silk Dental Floss
Silk floss with compostable refillable packaging
Lower concern; silk floss with credible PFAS-free positioning and third-party certification.
✓Verified PFAS-free by a third party
Dental Lace
Plant Based/Vegan Floss Refillable Glass Container PFAS-Free (2 Spools/4-
Plant-based vegan floss (likely plant cellulose or silk fibers)
Lower-concern product with explicit PFAS-free claim; no third-party verification limits certainty.
⚠Risky category by default
More dental floss grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.