Unwaxed Co. · Dental Floss
3D Dental Dental Floss, Unwaxed Refill, 200 yds, 1/Pk, PR130 | Frontier Dental
Lower PFAS concern for unwaxed dental floss; no coating triggers typical risk.
Unwaxed dental floss is inherently a lower-risk product since it lacks wax or water-repellent coatings where PFAS are commonly applied. The brand makes no PFAS claims and no public testing data is available.
Shop Unwaxed Co. on Amazon →Material
Unwaxed nylon filament
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
This product is unwaxed nylon filament, meaning it lacks the wax coating (often paraffin or beeswax) found in standard floss. Nylon itself is a synthetic polymer with no known leaching of toxic substances into the oral cavity during normal use. Unwaxed variants eliminate the small risk of ingesting wax residues, though both waxed and unwaxed nylon are generally safe for daily flossing. The 200-yard refill format reduces packaging waste compared to single-use cartridges.
The brand's record and disclosure
Frontier Dental and the Unwaxed Co. brand have no documented safety recalls or safety complaints in public databases for this product. The brand does not make prominent public statements about PFAS avoidance or material sourcing transparency, which is typical for smaller dental-care brands. No third-party certifications (organic, non-toxic, etc.) are known to be claimed. The silent stance on PFAS is not unusual for unwaxed floss, since the product design itself avoids wax coatings that might contain Teflon-family coating.
How it compares in its category
Unwaxed nylon floss is a standard category option alongside waxed variants and specialty materials like silk or bamboo-viscose blends. Unwaxed nylon is typically cheaper and slightly more prone to fraying than waxed, but carries no additional chemical risk. It occupies the middle ground: safer than some waxed floss (which may contain synthetic waxes of unclear composition) and comparable in safety to waxed floss made with food-grade paraffin or beeswax. This product offers no special advantage or disadvantage versus other unwaxed nylon refills.
If you buy it
Unwaxed floss requires slightly more careful handling to avoid shredding between teeth; use gentle sawing motions rather than aggressive snapping. Store the refill spool in a dry place; dental floss does not degrade or leach chemicals over time in normal indoor storage. Replace the refill when supply runs low; a 200-yard spool typically lasts 2-4 months with daily use. No special precautions needed beyond standard flossing technique and oral hygiene practice.
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.”
Nylon polymer stability and oral ingestion
Unwaxed nylon filament is inert and does not leach monomers or breakdown products in the mouth during normal flossing. Swallowing small amounts of floss (accidental) is not documented as a health risk.
Microplastic shedding from synthetic filament
All synthetic dental floss, including nylon, may shed microscopic fibers during use. The quantity and oral-health significance remain unclear, but unwaxed nylon is no worse than waxed variants in this respect.
Dye or colorant residues
Unwaxed nylon floss typically contains minimal or no added dyes. No reports of color-related contaminants or allergic reactions to this specific product or unwaxed nylon floss generally.
Cross-contamination from packaging or storage
The refill spool is usually wound on a plastic or cardboard holder. No documented risk of leaching from typical plastic spools during dry storage; floss is used in the mouth only.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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.