Unwaxed Co. · Dental Floss
Floss unWaxed Plain 12yd 72 box Quala Nylon Dental Floss Patient Sample Size Traditional nylon
Lower concern, unwaxed nylon floss lacks typical PFAS-prone coatings.
Unwaxed nylon dental floss is a straightforward polymer without wax, nonstick, or water-repellent treatments where PFAS are commonly added. Nylon itself doesn't inherently require PFAS, though the brand makes no explicit disclosure. No public lab data or third-party verification available for this product.
Shop Unwaxed Co. on Amazon →Material
Nylon (uncoated, 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 pure nylon monofilament without wax coating or additives. Nylon is a synthetic polymer that does not leach into the oral cavity during normal use because it remains intact and insoluble in saliva. Unwaxed nylon floss is mechanically simpler than waxed alternatives, eliminating potential residues from wax additives (often paraffin or beeswax blends). The 12-yard format in bulk sample boxes suggests industrial or clinical distribution, typically subject to standard dental material handling practices.
The brand's record and disclosure
Public disclosure on Unwaxed Co. is minimal; no major safety certifications or third-party testing reports are readily available for this brand. No recalls or adverse event reports specific to this product or brand have been identified in standard safety databases. The silent PFAS stance is consistent with many niche oral care manufacturers that do not prioritize transparency communication, but absence of disclosure does not indicate risk in this material class.
How it compares in its category
Unwaxed nylon floss is a standard, widely used category option. It avoids wax additives entirely, reducing chemical variability compared to waxed alternatives. Most major manufacturers (Oral-B, Colgate, Reach) offer unwaxed nylon versions with equivalent safety profiles. Bulk sample boxes of this size are typical for dental offices and clinical settings, where material consistency and cost are prioritized over branded packaging.
If you buy it
Use 12 to 18 inches per cleaning session, guiding floss gently between teeth to avoid gum trauma. No special storage conditions are required; keep in a dry environment to prevent moisture-related mold on the spool. Replace the box when floss becomes visibly frayed, discolored, or develops odor. Unwaxed floss may catch slightly more on rough tooth surfaces or tight contacts than waxed alternatives, but effectiveness is equivalent if technique is consistent.
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 shedding or breakage
Unwaxed nylon can fray or break if forced between tight contacts or if the monofilament is old or damaged. Shed fibers are generally swallowed harmlessly, but chronic forceful use may irritate gums. No established health risk from incidental fiber ingestion.
Microbial contamination on shared spool
Bulk sample boxes distributed in clinical settings may be touched by multiple users. The spool itself can harbor bacteria if stored in humid environments or handled with contaminated hands. Practice standard hygiene: wash hands before use and store in a clean, dry location.
Heavy metal residues in nylon production
Nylon polymers do not typically accumulate heavy metals during synthesis, and no recalls or testing data indicate contamination in commercial dental floss. FDA does not mandate heavy metal testing for oral floss.
Allergic reaction to nylon itself
Nylon is hypoallergenic and biocompatible; allergic contact dermatitis or oral reactions to pure nylon floss are not documented in medical literature. Sensitivity is extremely rare and would be idiopathic to the individual rather than a product defect.
Dye or colorant toxicity
The product description indicates plain, uncolored nylon, eliminating risk from synthetic dyes or pigments. If the floss is white or off-white naturally, no additives are present.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 75% 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.