Unwaxed Co. · Dental Floss
DDM International Nylon Unwaxed Dental Floss with Dispenser Box
Lower-concern choice; unwaxed nylon floss has no established PFAS application, but brand transparency is absent.
Unwaxed dental floss made from nylon is unlikely to contain intentional PFAS, as unwaxed products don't require water or stain resistance coatings where PFAS are typically used. However, DDM International/Unwaxed Co. offers no public PFAS disclosure or testing data.
Shop Unwaxed Co. on Amazon →Material
Nylon filament, unwaxed
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 nylon filament without wax coating. Nylon is a synthetic polymer with a stable chemical structure when used in the mouth; it does not leach into saliva under normal oral conditions and has no known toxic breakdown products during typical flossing. Unwaxed formulations eliminate the need for traditional waxes (which sometimes contain PFAS or mineral oil derivatives) and dispenser box packaging is standard cardboard with minimal chemical exposure risk.
The brand's record and disclosure
DDM International and Unwaxed Co. have no established public disclosure record, certifications (such as dental association endorsement or material transparency statements), or known safety controversies in available sources. No recalls or safety complaints are documented for this specific product. The brand's silent stance on PFAS and material sourcing means independent verification of claims is not publicly available, limiting confidence in supply-chain oversight.
How it compares in its category
Unwaxed nylon floss is a common and conservative choice in the category. It avoids the PFAS risk profile of waxed varieties (which may contain PFOA-based or paraffin waxes) and eliminates flavor or coating additives that can introduce fragrance allergens or synthetic resins. Compared to silk or polytetrafluoroethylene (Teflon-type coating) alternatives, nylon offers lower cost and no Teflon-type coating fume inhalation risk, though some users report slightly lower glide and shredding risk.
If you buy it
Store the dispenser box in a cool, dry place away from direct heat or sunlight to prevent nylon degradation. Replace the floss every 3-6 months or when fibers fray or become difficult to thread. Use gentle sawing motions to avoid mouth cuts; nylon does not dissolve and should not be swallowed. No special handling or maintenance is required beyond standard dental 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.”
Fragrance allergens and additives in wax coating
This product is unwaxed, so no wax-based fragrances, mint oils, or synthetic additives are present. Unwaxed nylon floss avoids this hazard class entirely.
Nylon fiber shedding and microplastic ingestion
Nylon filaments can shed small fibers during flossing, especially in older or worn dispensers. While ingestion of trace nylon fibers is not established as harmful, chronic low-level exposure to microplastics remains under scientific review; choose firm, intact floss and discard when shredding increases.
Colorants and dyes in filament
No established hazards from nylon colorants used in dental floss; azo dyes are not a concern in this application due to minimal absorption and low material volume. If the floss is dyed, no public recalls or safety alerts exist for this product or similar unwaxed formulations.
Dispenser box packaging contaminants
Standard cardboard dispensers pose no known chemical leaching risk. Ink and adhesives are not in contact with the floss itself and present no inhalation or ingestion hazard during normal use.
Nylon polymer stability and oral leaching
Nylon is chemically stable in the oral environment and does not degrade, dissolve, or leach monomers or plasticizers into saliva during the brief contact time of flossing. No toxicological concern is established for this material class in dental applications.
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.