Dental Floss, ranked by PFAS safety
37 products graded from Bad to Excellent, safest first. 36 grade Good or better and are worth buying.
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The best non-toxic dental floss, ranked safest first
Buyer’s guide
What to look for in dental floss, and which brands grade best and worst
Bad · Better · Best dental floss
The quickest read, what to skip and the top-graded picks worth buying instead.
Colgate
Colgate Total Waxed Dental Floss
Lower concern, but wax coating origins unclear; no brand PFAS disclosure.
Waterpik
Waterpik Cordless 1000 Water Flosser
Lower-concern water flosser; no known PFAS-prone materials.
Floss & Ploss
Love of Earth Co. Floss + Glass Case
Lower concern. Floss and glass are inherently PFAS-free materials.
Worth buying Good or Excellent, safest first
Floss & Ploss
Love of Earth Co. Floss + Glass Case
Dental floss (plant-based or silk) and glass case
Fragrance allergens or undisclosed additives
Limited concern
Microbial growth if floss is stored damp
Limited concern
Lower concern. Floss and glass are inherently PFAS-free materials.
⚠Risky category by default
Waterpik
Cordless 1000 Water Flosser
Plastic housing, ABS/nylon components, stainless steel tip, silicone seals
Silicone seal breakdown and leaching
Limited concern
Bacterial biofilm in water reservoir
Limited concern
Electronic component exposure if housing cracks
Limited concern
Lower-concern water flosser; no known PFAS-prone materials.
⚠Risky category by default
Floss & Ploss
Burst Refillable Expanding Mint Dental Floss Set
Nylon dental floss, likely polyester core
Fragrance allergens (mint flavoring)
Limited concern
Microplastic shedding during use
Limited concern
Coating or wax additives (undisclosed)
Limited concern
Low PFAS risk, but brand silence limits assurance.
⚠Risky category by default
Oral-B
Oral B Satin Floss
Nylon filament (primary material)
Nylon filament fragmentation/microplastic ingestion
Limited concern
Lower concern; nylon floss unlikely to contain PFAS, but unconfirmed by brand.
⚠Risky category by default
Waterpik
Aquarius Water Flosser
ABS plastic, stainless steel, rubber seals
Bacterial growth in water reservoir
Limited concern
Silicone rubber seal degradation
Limited concern
Lower concern. Standard water flosser materials pose minimal PFAS risk.
⚠Risky category by default
Waterpik
Ultra Water Flosser
plastic reservoir, electric motor, metal pump components
Bacterial growth in stagnant reservoir water
Limited concern
Lower concern; water-contact device without known PFAS-prone coatings.
⚠Risky category by default
Waterpik
Cordless Advanced 2.0 Water Flosser
Plastic (ABS/acrylic), stainless steel, rubber seals
Bacterial growth in water reservoir and seals
Limited concern
Acrylic reservoir clarity degradation
Limited concern
Lower concern. No PFAS-prone materials identified in standard construction.
⚠Risky category by default
Waterpik
Ultra Plus and Cordless Enhance 3000 Water Flosser Combo Pack
Plastic reservoir, motor, nozzle tips; standard polymer components
Bacterial and biofilm growth in reservoir and tubing
Limited concern
Silicone tubing degradation and particle shedding
Limited concern
Microplastic release from worn nozzle tips
Limited concern
Water flosser with standard plastics; no known PFAS concerns identified.
⚠Risky category by default
Sensodyne
Dental Floss 50m
Nylon monofilament dental floss
Fragrance allergen sensitization
Limited concern
Fiber aspiration in children or those with swallowing disorders
Limited concern
Lower concern. Nylon floss unlikely to contain PFAS, but verify with brand.
⚠Risky category by default
Sensodyne
Dental Tape 50m
Nylon dental tape, likely uncoated or minimally treated
Nylon microfiber shedding
Limited concern
Bacterial or mold growth on spool
Limited concern
Lower concern, standard nylon tape with no known PFAS indicators
⚠Risky category by default
Sensodyne
Expanding Dental Floss 30m
Nylon dental floss with natural wax coating
Fragrance allergens or undisclosed additives
Limited concern
Lower concern. Nylon floss with wax unlikely to contain PFAS.
⚠Risky category by default
Sensodyne
Fil Dentaire Sensodyne x1
Dental floss, synthetic polymer (unspecified)
Flavoring/mint oil allergens
Limited concern
Minimal PFAS risk likely, but manufacturer silent on composition.
⚠Risky category by default
Colgate
Total Dental Floss 25m
nylon monofilament with proprietary coating
Coating degradation and fraying
Limited concern
Fragrance allergens (if flavored)
Limited concern
Lower concern. Standard dental floss lacks typical PFAS applications.
⚠Risky category by default
Colgate
Dental Floss
nylon or silk core with wax coating
Allergens in wax or core materials
Limited concern
Lower concern. Standard floss material unlikely to contain PFAS.
⚠Risky category by default
Colgate
Total Mint Dental Floss
Nylon monofilament fiber
Mint flavoring allergens or sensitizers
Limited concern
Ingestion of swallowed floss
Limited concern
Lower concern. Standard nylon floss carries minimal inherent PFAS risk.
⚠Risky category by default
Gently
Dr Tung's Smart Floss 30 yds
Nylon floss filament
Gum irritation or sensitization from filament design
Limited concern
Lower concern. Nylon floss is inherently PFAS-free by composition.
⚠Risky category by default
Glide
Oral-B Glide Pro Health Deep Clean Floss
nylon filament, wax coating
Flavoring agents or flavor oil allergens
Limited concern
Lower concern dental floss, no PFAS flags identified in standard products.
⚠Risky category by default
Glide
Oral B Glide Mint All in One Dental Floss
Nylon floss, unflavored core with mint flavor coating
Lower concern, typical nylon floss without known PFAS indicators.
⚠Risky category by default
Gently
ECO DENT FLOSS
Dental floss, likely nylon or plant-based fiber
Microplastic shedding
Limited concern
Fungal or bacterial growth in dispenser
Limited concern
Minimal PFAS risk likely, but brand provides no transparency.
⚠Risky category by default
Gently
Reach Gentle Gum Care Floss
nylon dental floss, likely uncoated or waxed
Fragrance allergens (if flavored variant)
Limited concern
Microplastics
Moderate concern
Bacterial growth or biofilm on floss if stored wet
Limited concern
Lower concern. Floss is rarely PFAS-treated; verify materials directly.
⚠Risky category by default
Sensodyne
Total Care Gentle Floss Floss
Nylon filament, waxed
Oral mucosal irritation or allergic reaction
Limited concern
Lower concern, typical dental floss product with no known PFAS risk.
⚠Risky category by default
Oral-B
Glide Pro-Health Deep Clean Dental Floss
Nylon monofilament core
Nylon degradation or microfiber shedding
Limited concern
Ingestion of floss material
Moderate concern
Lower-concern product; nylon floss unlikely to contain PFAS.
⚠Risky category by default
Oral-B
Glide All-in-One Dental Floss
Nylon filament (Teflon-type coating-coated)
Nylon filament allergenicity or irritation
Limited concern
Ingestion of non-degradable polymer material
Limited concern
Lower concern, but Oral-B silent on Teflon-type coating.
⚠Risky category by default
Radius
Natural Biodegradable Silk Floss
Silk fiber, plant-based wax coating
Microbial growth on natural fiber storage
Limited concern
Lower-concern choice; natural silk has no inherent PFAS trigger.
⚠Risky category by default
- 75Radius Vegan Peppermint Anywhere Floss 20 Pack
- 75Radius Radius Floss
- 75Colgate Colgate Total Dental Floss, Mint Flavor, Travel Size 3 Yards, Waxed Glide Floss for Plaque Removal Between Teeth and Along Gumline, Compact Pocket
- 75Colgate Colgate Total Dental Floss 25m Mint Waxed
- 75Colgate Colgate Dental Floss 3 yd
- 75Colgate Colgate Total Pro Gum Health Interdental Floss 25m
- 75Colgate Colgate Total Tartar Control Dental Floss
- 75Colgate 12 Pack: Colgate Floss Mint Waxed Dental Floss – Travel Size, 3 Yards
- 75Listerine Johnson & Johnson Listerine Ultraclean Mint Floss
- 75Listerine Listerine Cool Mint Floss
- 75Oral-B ORAL B Glide Pro-Health Floss
- 75Listerine Listerine Reach Ultraclean Access Flosser
Graded and flagged Poor and Bad, we’d swap these
Colgate
Total Waxed Dental Floss
Nylon floss with wax coating
Heavy metals
Limited concern
PFAS
Moderate concern
Lower concern, but wax coating origins unclear; no brand PFAS disclosure.
⚠Waterproof or stain-proof treatment
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