Sensodyne Dental Floss 50m
Lower concern. Nylon floss unlikely to contain PFAS, but verify with brand.
Sensodyne dental floss is nylon monofilament, a material not typically associated with PFAS use. No public lab data or brand PFAS claims found; contact Sensodyne directly for full assurance.
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
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What Sensodyne Dental Floss 50m is made of, ingredients and materials
Sensodyne Dental Floss is nylon monofilament, a single synthetic polymer strand designed to slide between teeth without shredding. Nylon itself is chemically inert once cured and does not leach monomers or additives into the mouth during normal use. The 50m length suggests minimal packaging waste compared to shorter spools, though the product may be waxed or coated with silicone for glide, which have lower concern for food-contact applications at typical application levels.
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 allergen sensitization
If the floss is flavored (e.g., mint), synthetic fragrances may trigger reactions in individuals with fragrance sensitivity, though intraoral contact time is brief and dilution in saliva is rapid. Check product labeling for flavor agents if you have known sensitivities.
Fiber aspiration in children or those with swallowing disorders
Floss is a choking hazard if swallowed; supervise young children and do not use this product with individuals at high aspiration risk. This is a mechanical hazard, not a chemical one.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Wax or silicone coating ingestion
Minute quantities of wax or silicone used as floss slip agents are approved food contact substances (FDA, EU) and pose no known hazard at the exposure levels from daily flossing.
Nylon monomer or dye leaching
Fully polymerized nylon monofilament does not release monomers into saliva under normal use conditions. No reports of dye leaching or discoloration in commercial nylon floss.
Formaldehyde / VOCs
Dental floss is a non-aqueous, non-protein product and does not require formaldehyde-releasing preservatives. No evidence of exposure in this product class.
Source, ATSDR ↗How is this PFAS grade calculated?
The brand's record and disclosure
Sensodyne is a GSK-owned oral care brand with no established product recalls for dental floss safety. The brand has not issued public PFAS disclosure statements for floss products, which is typical for the category since nylon monofilament floss is not a known PFAS accumulator. No credible reports of formaldehyde releasers, heavy metals, or allergens in their floss formulations exist in public databases.
How it compares in its category
Dental floss as a category has extremely low chemical hazard compared to other cosmetics because the contact time is brief (2-3 minutes daily), the surface area is tiny, and saliva does not extract polymer-bound additives effectively. Sensodyne floss is comparable to major competitors (Oral-B, Crest) in material and safety profile. Waxed versions like this one may be slightly less durable than unwaxed floss but carry no added toxicological concern.
If you buy it
Store in a cool, dry place; nylon does not degrade from heat exposure at normal bathroom temperatures. Replace the spool when the floss becomes frayed, soiled, or difficult to unwind, typically every 2-4 months depending on use frequency. No special precautions are needed; standard use presents negligible ingestion or dermal contact risk. Dispose of used floss in household waste, not plumbing.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sensodyne has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Sensodyne Dental Floss 50m?
- Plant-based waxed fiber floss
- A third party reports verifying it as PFAS-free
- Fragrance allergens and sensitizers
- nylon monofilament
- The brand calls it PFAS-free, which we have not verified
- Microplastics
2 hazards checked on this product, all on its full breakdown.
- Coconut fiber-based floss
- The brand calls it PFAS-free, which we have not verified
- Microbial growth in natural fiber storage
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.