Unwaxed Co. · Dental Floss
Oral B Essential Unwaxed Dental Floss 50 M
Lower PFAS concern; unwaxed nylon floss typically poses minimal risk, but verify brand materials if concerned.
Unwaxed dental floss is a straightforward polymer product with no known water-repellent or stain-resistant coatings that typically trigger PFAS use. The brand makes no PFAS claims or disclosures. No public lab data confirms or denies PFAS in this specific product, and no third-party certifications are evident.
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 monofilament or multifilament without wax coating. Nylon is a synthetic polymer (polyamide) that does not leach significant chemicals into the mouth during normal flossing because it remains intact and is not heated or chewed. The absence of wax eliminates potential contaminants from natural or petroleum-derived wax additives, making unwaxed nylon a chemically simpler choice for oral contact.
The brand's record and disclosure
Unwaxed Co. maintains silence on PFAS and material sourcing specifics, which is typical for small floss manufacturers and not itself a red flag. No recalls, contamination reports, or safety controversies are on public record for this brand. As a niche unwaxed product, it occupies a transparency gap common in the dental-care subcategory, but the material class itself carries low inherent risk.
How it compares in its category
Unwaxed nylon floss is positioned as a lower-chemical alternative to waxed varieties, which may contain petroleum-derived wax or synthetic coatings with unknown additives. Compared to Teflon-type coating-based floss (which carries potential microfiber and Teflon-family coating concerns), unwaxed nylon avoids those synthetic polymer classes. Within the nylon category, unwaxed versions sidestep any dyes, flavoring agents, or slip additives found in premium waxed products.
If you buy it
Store in a cool, dry location to prevent moisture uptake into nylon, which can degrade tensile strength over time. Replace the spool if filaments become frayed, brittle, or visibly degraded, as weakened floss is less effective and may snap between teeth. No special handling or heat concerns apply; standard flossing technique is appropriate. A 50-meter spool typically lasts several months for daily users.
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 degradation and microfiber shedding
Unwaxed nylon can fray or shed fine fibers if overstressed during flossing or if stored in humid conditions. Swallowed microfibers are not absorbed and pass through the gut, but repetitive ingestion of synthetic fibers remains an area of ongoing research; this risk is not unique to this product and affects all nylon floss.
Dye or colorant impurities in nylon filament
Unwaxed floss typically contains no added dyes or colorants, as the nylon is used in its natural off-white or translucent state. No public reports of heavy-metal contamination or allergenic dyes in this product or brand exist.
Moisture absorption and bacterial growth
Nylon absorbs ambient moisture, creating a potential environment for microbial colonization on the spool if stored in high-humidity bathrooms. Proper storage in a dry location and replacement of the spool if contaminated mitigates this risk effectively.
Allergen risk from nylon material
Nylon is not a known allergen and has a long track record of oral and dermatological safety in medical devices and textiles. No reported cases of contact dermatitis or oral mucosa sensitization to unwaxed nylon floss are on record.
Chemical residues from manufacturing or packaging
The brand discloses no specific manufacturing standards or third-party testing for residual solvents or processing chemicals in the nylon filament. Given the material's inert nature and lack of reported contamination, risk remains theoretical and unverified.
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.