Listerine Review, Is Listerine Non-Toxic?
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.
Across 3 graded products, Listerine averages Excellent (75/100). On disclosure, the brand says nothing publicly about PFAS. 3 of its products grade Good or better. Grades are model-based estimates, not lab results.
Worth buying from Listerine Good or better, safest first
Listerine
Johnson & Johnson Listerine Ultraclean Mint Floss
Nylon monofilament floss, mint flavoring
Mint flavoring allergen potential
Mint oil and menthol can trigger oral irritation or allergic contact dermatitis in…
Gum tissue abrasion from rough edges
Worn or frayed floss edges can cause micro-abrasions to gum tissue, particularly in users…
Lower concern, though J&J remains silent on composition.
⚠Risky category by default
Listerine
Cool Mint Floss
Nylon filament (standard dental floss)
Fragrance allergens (menthol/mint flavoring)
Cool Mint formulation includes menthol and artificial flavor compounds; rare cases of…
Lower concern with no known PFAS risk factors, though no brand clarity exists.
⚠Risky category by default
Listerine
Reach Ultraclean Access Flosser
Plastic handle, nylon floss, metal pick
Microplastic shedding
Repeated bending or damage to the plastic handle during use could theoretically generate…
Low PFAS risk. Standard floss product with no known concerning coatings.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →