GUM Review, Is GUM Non-Toxic?
GUM averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 GUM products graded as of October 2026, and all 4 reach its 70 point pass mark.
GUM grades Excellent on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.
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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Butlerweave Waxed Mint Dental Floss
- nylon/polyester floss with wax coating
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- Fragrance allergens (if flavored), Product is labeled 'Mint' but no detailed fragrance disclosure is…
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Dental Floss Fresh Mint
- nylon filament, mint flavoring
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Dental Floss Waxed Expandable 40M for Interdental Care
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GUM
Expanding Dental Floss Waxed Woven Floss
- nylon fibers, wax coating
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GUM and PFAS, common questions
- Does GUM have PFAS?
- GUM averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 GUM products graded as of October 2026, and all 4 reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is GUM non-toxic?
- GUM Butlerweave Waxed Mint Dental Floss is the highest-graded GUM product we have scored, at 75/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which GUM products are lower concern for PFAS?
- The highest-graded GUM products we have scored are GUM Butlerweave Waxed Mint Dental Floss, Gum Dental Floss Fresh Mint, Gum Dental Floss Waxed Expandable 40M for Interdental Care. That is our model-based estimate from materials and public disclosure, not a lab test.
Every grade uses the same public rubric. How grades work →