Isodent · Dental Floss
Ecodent Gentle Floss 100 yd 6/pak, Size: 0.32 Ounce (Pack of 6), Blue
Lower-concern choice; typical dental floss material without known PFAS risk profile.
Ecodent Gentle Floss is a nylon monofilament dental floss with no public disclosure of PFAS-related treatments or coatings. Standard nylon dental floss does not typically require water-repellent or stain-resistant finishes that would introduce PFAS.
Shop Isodent on Amazon →Material
Nylon monofilament (dental floss)
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
Ecodent Gentle Floss is nylon monofilament, the most common dental floss material globally. Nylon is a synthetic polymer that does not leach known toxicants into the mouth during normal use at room temperature. The thin filament design (0.32 oz for 100 yards indicates standard gauge) is engineered to slide between teeth without breaking, and the material's chemical stability in saliva means no degradation or leachate risk during typical daily flossing.
The brand's record and disclosure
Isodent (the manufacturer) does not maintain a public safety or environmental disclosure statement accessible through standard product labeling or corporate resources. No recalls or safety warnings for this product are documented in FDA or CPSC databases. The brand markets the line as 'Gentle,' suggesting a focus on minimal tissue irritation, though this is a marketing claim rather than a certified attribute. No third-party certifications (such as ADA, non-GMO, or sustainable sourcing) are listed on the product packaging.
How it compares in its category
Nylon monofilament is the standard baseline for dental floss safety; it poses the same nominal hazard profile as brands like Oral-B, Glide, and store-label alternatives. Waxed variants sometimes contain microcrystalline wax, which is inert and food-safe. Specialty flosses (e.g., silk, charcoal-infused, or teflon-coated) do not show superior safety profiles in peer literature, though teflon-coated variants carry theoretical Teflon-type coating handling risks during manufacturing, not use. This product sits squarely in the conventional, low-risk segment.
If you buy it
Store floss in a cool, dry place away from direct sunlight to prevent UV degradation of the nylon polymer, though shelf life is effectively indefinite for unopened packages. Use gently to avoid cutting gums, which can increase infection risk independent of the floss material. Replace the floss daily or after meals if visible debris accumulates. Discard the product if the filament becomes brittle or frayed, as this increases breakage risk.
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 polymer degradation or leaching
Nylon monofilament is chemically stable in aqueous, room-temperature oral conditions. No documented cases of toxicant leaching or degradation into saliva during normal flossing use exist in dental or toxicology literature.
Microplastics from filament shedding
Aggressive flossing or use of damaged/frayed floss can theoretically shed small nylon particles, but ingestion of trace microplastics from a single floss session is negligible and does not constitute a reportable hazard relative to other dietary sources of microplastics.
Dyes or colorants (blue pigment)
No information is publicly available on the specific dye used in the blue variant of this product. Dental-grade colorants are typically synthetic organic dyes (e.g., FD&C Blue No. 1) that are approved for oral use and do not leach in significant quantities during flossing.
Wax coating contaminants (if waxed)
If this product contains wax (common in 'gentle' floss formulations), it is typically food-grade paraffin or beeswax, both inert and non-toxic at the microscopic quantities present on dental floss.
Bacterial growth or biofilm on stored floss
Damp storage conditions can promote mold or bacterial colonization of the floss dispenser spool. Keep the package sealed until use and store in a dry environment to minimize microbial risk.
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.