Meridol Large Dental Floss 40m
Lower concern; standard dental floss with no known PFAS coatings.
Meridol Large Dental Floss is nylon monofilament with no disclosed treatments. Dental floss typically carries lower PFAS risk than coated cookware or water-repellent textiles, though some brands treat floss with wax or coatings not disclosed here.
We flunk more products than we pass. This one earned its grade. How we grade
Material
nylon monofilament dental floss
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
Aqua Pure
3M Aqua-Pure AP802B Whole House Filter Housing
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product. See all of them.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product. See all of them.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product. See all of them.
What Meridol Large Dental Floss 40m is made of, ingredients and materials
Meridol Large Dental Floss is nylon monofilament, a single continuous synthetic polymer fiber designed for interdental cleaning. Nylon is chemically inert in the oral cavity at normal use temperatures and does not leach monomers or additives into saliva under standard flossing conditions. The monofilament form (versus braided or waxed variants) reduces surface area for contamination and is easier to sterilize or replace.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Fragrance allergens and chemical irritants
If the product is flavored or scented (e.g., mint, cinnamon), minor amounts of fragrance compounds or flavoring oils may be present. These are typically food-grade and ingested in negligible quantities; individual allergies to mint or essential oils are rare but possible. The product labeling does not explicitly list fragrance components.
Microplastic shedding or fiber degradation
Nylon monofilament can shed microscopic fibers during normal use, particularly if teeth are sharp or gum tissue is bleeding. The quantity is minimal and is swallowed; systemic health impact is not established. Replacement when fibers fray reduces shedding risk.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Nylon monofilament does not require formaldehyde-based resins for curing or finishing. No formaldehyde residue is documented or expected in standard dental floss manufacture.
Source, ATSDR ↗Heavy metals
Meridol Large Dental Floss is typically white or clear; no artificial dyes, colorants, or pigments are named. If any color is present, it is not stated to contain azo dyes or heavy-metal-based pigments, and none is on record.
Source, FDA ↗Talc contamination
Dental floss is not a talc-containing product category. Nylon monofilament is not dusted or coated with talc in standard production.
The full breakdown
The brand's record and disclosure
Meridol is a Halodent GmbH oral-care brand with no public history of product safety recalls, contamination incidents, or regulatory enforcement actions related to dental floss. The company does not disclose detailed material sourcing, manufacturing locations, or third-party safety certifications on the product packaging or website. No independent certifications (e.g., ADA, ISO 20126) are noted on the product labeling in available sources.
How it compares in its category
Nylon monofilament floss is a standard material used by most mainstream brands (Oral-B, Reach, Colgate, Listerine). It is functionally and chemically comparable to unflavored, unwaxed nylon alternatives; waxed or flavored variants carry minor additives (paraffin, gums, colorants) that are ingested in trace amounts. The 40 m spool size is typical for single-user multi-month supply; no evidence suggests Meridol's version differs materially from competitors in composition or contaminant risk.
If you buy it
Store the spool in a dry place to prevent mold or bacterial growth on the floss itself (especially important in humid bathrooms). Replace the floss roll every 2-3 months or sooner if fibers appear frayed or discolored. Use normal tension; excessive force can damage gum tissue but does not damage the floss. No heating, boiling, or chemical treatment is required or recommended; use at room temperature.
What we don’t know
- Basis
- Model estimate, 70% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Meridol has made none
Formulations change between production runs, so check the current label. How we grade.
Better-graded alternatives in Dental Floss
Oral-B
ORAL B Glide Pro-Health Floss
- nylon monofilament
- The brand calls it PFAS-free, which we have not verified
- Microplastics
2 hazards checked on this product. See all of them.
DentaFloss
Cocofloss Dental Floss
- Coconut fiber-based floss
- The brand calls it PFAS-free, which we have not verified
- Microbial growth in natural fiber storage
DentaFloss
Oral-B Essential Floss
- Nylon floss, waxed coating
- The brand calls it PFAS-free, which we have not verified
- Starting grade for this product type
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.