Euthymol · Dental Floss
Elgydium Eco Dental Floss 35m
Lower-concern choice; standard nylon floss rarely requires PFAS treatments, but no public testing confirms this variant.
Elgydium Eco Dental Floss is standard nylon filament with no identified need for Teflon-family coating or water-repellent coatings, typical dental floss does not require these. The brand makes no PFAS claims either way.
Shop Euthymol on Amazon →Material
Nylon filament (standard 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
Elgydium Eco Dental Floss is a nylon monofilament or multifilament strand, the industry standard for mechanical plaque removal between teeth. Nylon is chemically stable in the oral environment and does not degrade under normal use or saliva exposure, unlike some plant-based alternatives that fray or break. The 35m spool indicates a standard consumer size with no added waxes, flavoring agents, or coatings documented in publicly available product information. Nylon itself does not release BPA, phthalates, or other endocrine disruptors when used at mouth temperature.
The brand's record and disclosure
Euthymol (owner: Pierre Fabre Oral Care, France) is a heritage European oral care brand with a presence in European and Commonwealth markets; no major product recalls or safety controversies are on public record for this line. The company provides minimal transparency on material sourcing, manufacturing, or third-party safety testing on its website or product labeling. No formal certification by organizations like EWG Verified, NSF, or similar bodies is advertised. The 'Eco' designation appears marketing-focused rather than substantiated by independent environmental or toxicological claims.
How it compares in its category
Standard nylon dental floss (waxed or unwaxed) is the safest, most widely used category option; Elgydium Eco sits squarely in this mainstream tier. Some competitors (e.g., Oral-B, Crest) provide more detailed material transparency and third-party testing summaries. Plant-based or bamboo alternatives market lower PFAS risk but often have higher breakage rates and shorter effective lifespan. Charcoal-infused floss variants exist but add pigment and potential particulate shedding; this product avoids that complexity.
If you buy it
Use standard flossing technique (gentle sawing motion, do not snap); nylon is durable and will not splinter under normal pressure. Replace the spool when it runs out (35m is a 1, 3 month supply for daily users); no refrigeration or special storage is needed beyond a dry bathroom shelf. If gums bleed excessively or show persistent irritation, consider switching to a softer or waxed variant; floss itself is not the usual culprit but individual sensitivity varies. Do not reuse lengths or leave floss between teeth overnight.
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 microparticle ingestion
Nylon monofilament can fray or shed tiny fibers during flossing, particularly if teeth are sharp or gums are inflamed. Swallowing small amounts is not known to cause acute harm, but chronic microplastic ingestion is an emerging concern; risk is minimal for occasional use but not zero over decades.
Dye or pigment contaminants (if colored)
Product labeling and descriptions do not indicate added dyes or colorants. If the product is dyed (undocumented), risk of azo dye or heavy metal pigment migration into oral tissue would be low at mouth temperature, but transparency is lacking.
Wax coating composition (if waxed variant)
Many nylon floss products use paraffin, beeswax, or proprietary wax blends for smoothness. Product name does not specify wax type; if present, composition should be verified on packaging. Paraffin is inert; some proprietary blends are undisclosed.
Oral mucosal irritation from mechanical trauma
Standard nylon is biocompatible and not allergenic in the vast majority of users. Individual sensitivity to nylon itself is extremely rare; irritation is typically user-error related (too much force, pre-existing gum disease) rather than product-intrinsic.
Talc or mineral contaminants in manufacturing
Dental floss manufacturing does not typically involve talc. No recalls or reports link Euthymol floss to mineral contamination. Risk is not established for this product class.
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.