Does Listerine dental floss have PFAS?
Listerine dental floss averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 6 Listerine dental floss products graded as of October 2026, level with the 75 out of 100 median for the 21 other dental floss brands graded alongside it.
Listerine dental floss averages Excellent on our four-band scale. 6 of the 6 we graded are worth buying. That is above 48% of the dental floss brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- 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, all on its full breakdown.
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, all on its full breakdown.
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, all on its full breakdown.
Listerine dental floss worth buying Good or better, best-graded first
- Plastic handle, nylon floss, metal pick
- We found no PFAS statement from the brand
- Microplastic shedding. Repeated bending or damage to the plastic handle during use could theoretically…
- Nylon monofilament floss, mint flavoring
- We found no PFAS statement from the brand
- Fragrance allergens. Mint flavoring may contain natural or synthetic fragrance compounds that trigger…
2 hazards checked on this product, all on its full breakdown.
- Nylon filament (standard dental floss)
- We found no PFAS statement from the brand
- Fragrance allergens (menthol/mint flavoring). Cool Mint formulation includes menthol and artificial flavor…
- Nylon monofilament fiber
- We found no PFAS statement from the brand
- Microplastics. Nylon monofilament floss is designed to remain intact during use and is not meant to be…
- nylon/polyester floss
- We found no PFAS statement from the brand
- Fragrance allergens (mint/flavoring). Mint flavoring in floss may trigger contact sensitization in…
2 hazards checked on this product, all on its full breakdown.
- nylon filament
- We found no PFAS statement from the brand
- Fragrance allergens or irritants. The product name includes 'Mint' flavor, suggesting a scent or taste…
2 hazards checked on this product, all on its full breakdown.
Better dental floss from other brands
Graded higher than the Listerine average of 75.
- 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
The same question, asked of the other dental floss brands
Best average grade first. Listerine averages 75.
See every Listerine product we grade on the Listerine brand page, or the full dental floss ranking.