Non-Toxic Dental Floss, ranked by PFAS grade
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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.
80 of the 81 dental floss products PFAS Authority has graded reach its 70 point pass mark for PFAS and other toxins, 98.8% of the category, as of October 2026, and 1 scores below it. The highest graded is Cocofloss Delicious Mint Woven Dental Floss at 100 out of 100.
The full ranking is below, best-graded first, with every score linking to the evidence behind it.
Is dental floss safe?
80 of the 81 dental floss products we graded come back low-concern on our screen and 1 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.
Best graded dental floss here
- 1Cocofloss Delicious Mint Woven Dental Floss 100 out of 100
- 2Oral-B ORAL B Glide Pro-Health Floss 100 out of 100
- 3Cocofloss Dental Floss 100 out of 100
Start here
The best non-toxic dental floss, ranked by grade
Buyer’s guide
What to look for in dental floss, and which brands grade best and worst
Dental Floss, ranked.
The quickest read, what to skip and the top-graded picks worth buying instead.
Colgate
Total Waxed Dental Floss
Lower concern. Nylon floss with wax coating, no PFAS statement on record.
Love of Earth
Co. Floss + Glass Case
Lower concern. Material as recorded is not linked to PFAS.
Cocofloss
Delicious Mint Woven Dental Floss
Lower concern. MADE SAFE certified, plant-based floss, no PFAS risk known.
Why Cocofloss Delicious Mint Woven Dental Floss wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 2 products it beats, so you can see exactly where the 45 points between the top and the bottom of this dental floss ranking come from.
The winner
Made of Plant-based waxed fiber floss.
- +20Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
- -30Third-party PFAS-free verification. A third party reports verifying this product as PFAS-free.
What the grade does not fix. Nothing specific to this product adds risk, so what remains is the category baseline that every product here starts from. See the full breakdown.
What it beats, and why
What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.
Made of Dental floss (plant-based or silk) and glass case.
- +20Category baseline
- +15No PFAS disclosure
- -10Base material not linked to PFAS
25risk points, a grade of 75
What puts it behind. No PFAS disclosure, +15 points. No public statement from the brand about PFAS in this product. The winner carries no such factor.
Made of Nylon floss with wax coating.
- +20Category baseline
- +15No PFAS disclosure
- +10Disclosed non-fluorinated coating. Coating is named and is not a fluorochemical (wax, paraffin, mink oil).
45risk points, a grade of 55
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
Which dental floss is PFAS-free? Good or Excellent, best-graded first
- 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
- Nylon floss, waxed coating
- The brand calls it PFAS-free, which we have not verified
- Starting grade for this product type
- Nylon filament (primary material)
- The brand calls it PFAS-free, which we have not verified
- Allergic reaction to nylon or additives
- Nylon floss, unflavored core with mint flavor coating
- The brand calls it PFAS-free, which we have not verified
- Mint flavoring allergens
- Nylon monofilament core
- The brand calls it PFAS-free, which we have not verified
- Allergic contact dermatitis from floss material or residual processing chemicals
- Nylon-coated floss
- The brand calls it PFAS-free, which we have not verified
- Bacterial/fungal growth on spool
- Dental floss (plant-based or silk) and glass case
- We found no PFAS statement from the brand
- Fragrance allergens or undisclosed additives
2 hazards checked on this product, all on its full breakdown.
- bamboo bristles, bamboo handle
- We found no PFAS statement from the brand
- Microorganism growth in natural fiber bristles
2 hazards checked on this product, all on its full breakdown.
- Nylon floss with wax coating
- Nylon degradation and microplastic generation
- Nylon floss with wax coating
- We found no PFAS statement from the brand
- Nylon degradation and microfiber release
2 hazards checked on this product, all on its full breakdown.
- nylon multifilament floss, unwaxed
- We found no PFAS statement from the brand
- Residual manufacturing contaminants
- waxed nylon dental floss with ammonium fluoride active
- We found no PFAS statement from the brand
- Fluoride systemic exposure
2 hazards checked on this product, all on its full breakdown.
Humble Brush
The Humble CO. - Bamboo Interdental Brush - Size 2-0.5 mm - Developed by Dentists - Designed in Sweden - Sustainable & R
- Bamboo bristles, wood/bamboo handle
- We found no PFAS statement from the brand
- Formaldehyde / VOCs
5 hazards checked on this product, all on its full breakdown.
- Vegan plant-based wax or natural fibers (brand uses non-Teflon-type coating formulations)
- We found no PFAS statement from the brand
- Natural fiber allergenicity
- Silk fiber, plant-based wax coating
- We found no PFAS statement from the brand
- Microbial growth on natural fiber storage
- Nylon dental tape, likely uncoated or minimally treated
- We found no PFAS statement from the brand
- Nylon microfiber shedding
2 hazards checked on this product, all on its full breakdown.
- Nylon floss core with wax coating
- We found no PFAS statement from the brand
- Fragrance allergens (mint)
- Nylon filament (primary composition)
- We found no PFAS statement from the brand
- Fragrance allergens or irritants
2 hazards checked on this product, all on its full breakdown.
- Nylon dental floss, no disclosed coating
- We found no PFAS statement from the brand
- Fragrance allergens or undisclosed fragrance components
2 hazards checked on this product, all on its full breakdown.
- Woven plant fiber or nylon core
- We found no PFAS statement from the brand
- Microplastic shedding from synthetic core
- Woven coconut fiber core
- We found no PFAS statement from the brand
- Microplastic shedding
2 hazards checked on this product, all on its full breakdown.
- Nylon monofilament with wax coating
- Nylon monofilament degradation and microplastic shedding
- 75Colgate Dental Floss
- 75Colgate Dental Floss 3 yd
- 75Colgate Total Dental Floss 25m Mint Waxed
- 75Colgate Total Mint Dental Floss
- 75Colgate Total Pro Gum Health Interdental Floss 25m
- 75Colgate Total Tartar Control Dental Floss
- 75Crest Braces Care Floss Threader Single-Use Packets
- 75Crest Glide Deep Clean Floss To Go Packets Rip-Floss-Toss Cool Mint 30
- 75Crest Glide Deepclean Floss Mint, 15m 72
- 75Crest Glide Pro Health Comfort Mint Mint Floss 43.7 oz
- 75Elmex Waxed Dental Floss 50m
- 75Burst Refillable Expanding Mint Dental Floss Set
- 75Listerine Reach Ultraclean Access Flosser
- 75Dr. Tung's Dr Tung's Smart Floss 30 yds
- 75Eco-Dent ECO DENT FLOSS
- 75Reach Gentle Gum Care Floss
- 75Sensodyne Total Care Gentle Floss
- 75GUM Butlerweave Waxed Mint Dental Floss
- 75GUM Dental Floss Fresh Mint
- 75GUM Dental Floss Waxed Expandable 40M for Interdental Care
- 75GUM Expanding Dental Floss Waxed Woven Floss
- 75Humble Brush Floss Picks Charcoal 50 Pieces
- 75Humble Brush The Humble Co Bamboo Interdental Brush Size
- 75Listerine Johnson & Johnson Listerine Ultraclean Mint Floss
- 75Listerine Cool Mint Floss
- 75Listerine Ultraclean Floss
- 75Listerine Ultraclean Mint Floss 30
- 75Listerine Ultraclean Mint Shred-Resistant Dental Floss Refill
- 75Meridol Fleece Dental Floss
- 75Meridol Mint Dental Floss 40m
- 75Meridol Special floss dental floss
- 75Plackers Dental Plackers Micro Mint
- 75Plackers Micro Line Dental Floss Picks
- 75Plackers Twin-Line Dental
- 75Plackers Twin-Line Dental Flossers
- 75 Vegan Peppermint Anywhere Floss 20 Pack
- 75Reach Dental Waxed Floss
- 75Reach Ultraclean Ultrablast Cool Mint Dental Floss 30 YDS
- 75Sensodyne Fil Dentaire Sensodyne x1
- 75Sensodyne Dental Floss 50m
- 75Sensodyne Expanding Dental Floss 30m
- 75Sunstar GUM · Hilo dental sunstar 1pz
- 75Sunstar Butler Gum EasyThread Floss, Sample Pack, 100/Pk, 3200PQ
- 75Sunstar Gum Expanding Floss-30m
- 75Sunstar GUM Floss
- 75Waterpik Aquarius Water Flosser
- 75Waterpik Cordless 1000 Water Flosser
- 75Waterpik Cordless Advanced 2.0 Water Flosser
- 75Waterpik Ultra Plus and Cordless Enhance 3000 Water Flosser Combo Pack
- 75Waterpik Ultra Water Flosser
- 75Meridol Large Dental Floss 40m
- 75Sonicare Philips Sonicare Power Flosser 7000
- 75Sonicare Philips Sonicare Power Flosser 3000
- 75Philips Sonicare Cordless Power Flosser 3000
- 75Philips Sonicare 3000 Cordless Power Flosser
- 75Sonicare Philips Sonicare Compact Flosser 1000
Which dental floss contains PFAS? Poor and Bad, we’d swap these
- Nylon floss with wax coating
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
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