Dental Lace · Dental Floss
Dental Lace Silk Floss Refills
Lower-concern choice; silk floss has no inherent reason to contain PFAS, but brand offers no reassurance.
Dental Lace silk floss is made from silk fiber, which is not a material typically treated with PFAS coatings. The brand makes no PFAS claims or disclosures.
Shop Dental Lace on Amazon →Material
Silk floss (no stated coating)
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 Silk Floss Refills are made from silk fibers, a natural protein polymer that breaks down in the oral environment and poses no known leaching or chemical degradation risks. Unlike synthetic floss materials (nylon, polyester), silk does not off-gas volatile compounds or shed microplastics. The product is stated to have no coating, eliminating concerns about resin binders, plasticizers, or Teflon-family coating treatments that plague conventional dental floss.
The brand's record and disclosure
Dental Lace has not published explicit safety certifications (e.g., ISO, FDA approval statements) or third-party testing results on their product pages. The brand maintains a sustainability-focused marketing stance but remains silent on PFAS, heavy metals, or chemical additives, which is typical for small dental-care brands. No recalls, safety violations, or toxicity complaints are on record for this product.
How it compares in its category
Most conventional dental floss (nylon or polyester) is treated with wax (often paraffin or beeswax) and sometimes coated with Teflon-type coating (Teflon) or silicone for glide. Silk floss, by contrast, requires no Teflon-family coating and degrades fully if swallowed. Dental Lace's uncoated silk refill sits at the low-chemical end of the market, comparable to other natural-fiber or wax-only floss options.
If you buy it
Store refills in a dry environment to prevent mold or moisture absorption in the silk fibers. Floss should be replaced if it becomes frayed, knotted, or unable to slide between teeth without shredding. Because silk is a protein and may harbor bacteria if left damp, replace the container spool every 1-2 months or if odor develops. Use standard dental technique (gentle C-shape, no snapping) to avoid gum trauma.
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.”
Microbial growth on natural fiber
Silk is an organic protein substrate that can support bacterial or mold growth if stored in humid conditions. Risk is manageable with dry storage and regular container replacement; no recalls reported for Dental Lace.
Wax or lubricant additives (not disclosed)
Brand states no coating, but does not disclose whether any wax or slip agent is used during manufacturing. If present, food-grade beeswax or candelilla wax carry no toxicity concern; synthetic paraffin poses no oral-health risk at trace amounts.
Heavy metals in dyes (if colored)
No information on whether silk is dyed or left natural. If colored, risk of cadmium or lead in textile dyes is low for a product that is not ingested in bulk, but brand provides no dye safety statement.
Silk allergen sensitivity
Individuals with silk protein allergy (rare) may experience oral irritation or allergic response. This is not a manufacturing defect but a material-specific sensitivity; brand does not label an allergen warning.
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.