Unwaxed Co. · Dental Floss
Unwaxed Dental Floss Refill 200 Yards - Pr130
Lower PFAS concern; unwaxed dental floss is inherently simpler than waxed variants, though brand transparency is absent.
Unwaxed dental floss typically uses bare nylon or polyester without applied coatings, making PFAS contamination less likely than waxed formulations. The brand makes no public PFAS claims and discloses nothing about sourcing or processing.
Shop Unwaxed Co. on Amazon →Material
Unwaxed nylon or polyester fiber
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 or polyester monofilament, meaning the fiber itself is the functional material with no applied coating or wax layer. Unwaxed floss eliminates the need for additives like carnauba wax, paraffin, or synthetic binders that can degrade or shed particles over time. The bare fiber design reduces the surface complexity that could harbor residues or leachables, making it chemically simpler than waxed alternatives. Nylon and polyester fibers used in dental floss have decades of established oral safety history with no known systemic absorption risk during normal use.
The brand's record and disclosure
Unwaxed Co. has published no third-party safety certifications, material sourcing statements, or PFAS commitment on record. The brand's silent stance on PFAS and manufacturing transparency is notable but not unusual for small floss manufacturers. No recalls or documented safety incidents involving this specific product or brand appear in FDA or consumer safety databases. Without public disclosure, independent verification of manufacturing controls or material purity is not available.
How it compares in its category
Unwaxed floss is generally considered the simplest category variant, lacking the coating-wear and additive-migration concerns of waxed, flavored, or charcoal-infused alternatives. Most dental professionals regard unwaxed and waxed floss as functionally equivalent for plaque removal; the choice is primarily user preference and ease of use. This product's 200-yard refill format is standard and reduces packaging waste compared to single-use packs. Compared to Teflon-type coating-based (Teflon) floss, unwaxed nylon avoids the PFAS Teflon-family coating concern entirely.
If you buy it
Use standard flossing technique (gentle sawing motion, avoid snapping) to prevent gum trauma or fiber breakage that could lodge debris. Store in a dry location; unwaxed nylon can absorb moisture, which may slightly degrade the fiber's structural integrity over months but poses no health risk at typical bathroom humidity. Replace spools when fibers become frayed, kinked, or noticeably weaker (typically every 6-12 months depending on storage). No special precautions needed; this is a low-risk oral hygiene product suitable for daily use by children and adults.
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 fiber fragmentation or ingestion
Unwaxed nylon floss can shed individual fibers if damaged or frayed, but no documented cases of systemic harm from accidental ingestion of small floss pieces exist. Fibers are inert and pass through the GI tract.
Moisture absorption and mold growth
Unwaxed nylon is hygroscopic and can absorb bathroom moisture, creating conditions for surface mold or bacterial colonization if stored improperly. This is a storage issue, not a material toxicity issue, and is prevented by keeping the spool in a dry container.
Dye or finish residues
No documented use of azo dyes or heavy-metal colorants in dental floss manufacturing. Unwaxed variants typically use no added dyes, though some brands add harmless pigments; Unwaxed Co. brand specifications are not publicly available.
Teflon-type coating or Teflon-family coating residue
Unwaxed floss by definition contains no Teflon-type coating (Teflon) coating, eliminating the primary PFAS source in dental floss. This product avoids that hazard category entirely compared to premium waxed or 'dental tape' alternatives.
Leachables from wax or additives
Unwaxed formulation eliminates synthetic waxes, flavor oils, and coating agents that degrade over time. This removes a potential exposure vector present in waxed, cinnamon, mint, or charcoal-infused variants.
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.