Dental Lace · Dental Floss
Dental Lace Silk Floss
Lower PFAS concern; silk floss has no typical functional reason for PFAS coatings.
Dental Lace makes floss from silk, a natural protein fiber with no inherent need for Teflon-family coating coatings or water-repellent finishes. The brand does not publicly disclose PFAS use or claim PFAS-free status.
Shop Dental Lace on Amazon →Material
Silk floss (undyed or naturally dyed)
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
Dental Lace floss is made from silk fibers, a protein polymer derived from silkworm cocoons. Silk is inherently inert in the mouth and does not rely on synthetic polymers, plasticizers, or binding resins typical of conventional nylon floss. The product uses either undyed silk or natural dyes (commonly plant-based), avoiding synthetic azo dyes and heavy-metal pigments used in some colored flosses. Silk naturally degrades in the oral environment without releasing microplastics or synthetic breakdown products.
The brand's record and disclosure
Dental Lace is a smaller, direct-to-consumer oral care brand emphasizing natural and sustainable materials; publicly available ingredient disclosure and safety certifications are minimal. No major recalls or safety incidents are on record for this product. The brand does not publish detailed testing data or third-party certifications (e.g., NSF, FDA premarket review statements), which is typical for small natural-product companies but limits independent verification. Their PFAS stance is not publicly articulated, though the material class itself presents no typical functional need for such coatings.
How it compares in its category
Silk floss is a premium alternative to conventional nylon floss (polyamide), which can contain microplastics and coatings that may include Teflon-type coating or wax additives of variable safety. Most synthetic flosses are dyed with regulated colorants, but undyed or naturally dyed silk eliminates that exposure pathway entirely. Dental Lace sits at the lower chemical-input end of the floss market; it trades some durability and breakage resistance of nylon for simpler composition and oral-environment biodegradability.
If you buy it
Silk floss is softer and more prone to shredding or breaking than nylon, especially if pulled hard between tight contacts; use gentle, sliding motions rather than snapping. Store in a cool, dry place away from moisture to prevent mildew (silk is protein-based and can degrade in very humid conditions). Replace the spool when fibers begin fraying noticeably or if the dispenser shows visible wear. As with all floss, discard after single use and do not reuse strands.
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.”
Natural dye allergenicity or irritation
If Dental Lace uses plant-based dyes (e.g., madder, indigo, or other botanical colorants), trace allergic contact reactions in the oral mucosa are theoretically possible in sensitized individuals, though documented cases for floss are extremely rare. No incidents are on record for this brand.
Silk protein degradation and microbial colonization
Silk is a protein polymer and can theoretically support fungal or bacterial growth if stored wet or in humid conditions for extended periods. No safety incidents have been reported; standard dry storage prevents this risk.
Microplastics and synthetic polymer fragments
Silk floss does not shed microplastics because it is not a synthetic polymer. Degradation products are proteinaceous and are swallowed or expelled without concern for microplastic bioaccumulation.
Heavy-metal contamination in dyes or binding agents
Silk floss formulations do not employ traditional synthetic dye classes (azo, triphenylmethane) or heavy-metal mordants in typical consumer oral-care applications. No test data or recalls implicate metal contamination in Dental Lace products.
Coating or wax additives (wax-coated variants)
If Dental Lace offers wax-coated versions, the wax source and purity become relevant. Plant-based waxes (e.g., beeswax, candelilla) are generally safe; synthetic or paraffin-based waxes carry minimal risk in short-contact oral use. Product labeling should specify wax type; none on record as problematic.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% 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.