The Best Non-Toxic Dental Floss of 2026
We scored 37 dental floss for PFAS forever chemicals and other hazards, then ranked them safest first. The top pick is Floss & Ploss Love of Earth Co. Floss + Glass Case at 90/100. Every score below links to the full breakdown of what earned it.
3% of the 37 dental floss we scored fail our PFAS and toxin screen.
The safest PFAS-free dental floss we have scored
- 1
Floss & Ploss
Love of Earth Co. Floss + Glass Case
Dental floss (plant-based or silk) and glass case
PFAS Grade90ExcellentOverall Grade82Excellent🏷️70Fragrance allergens or undisclosed additives
Limited concern
⚠️70Microbial growth if floss is stored damp
Limited concern
Lower concern. Floss and glass are inherently PFAS-free materials.
⚠Risky category by default
- 2
Waterpik
Cordless 1000 Water Flosser
Plastic housing, ABS/nylon components, stainless steel tip, silicone seals
PFAS Grade85ExcellentOverall Grade73Good⏳70Silicone seal breakdown and leaching
Limited concern
⚠️70Bacterial biofilm in water reservoir
Limited concern
⚠️70Electronic component exposure if housing cracks
Limited concern
Lower-concern water flosser; no known PFAS-prone materials.
⚠Risky category by default
- 3
Floss & Ploss
Burst Refillable Expanding Mint Dental Floss Set
Nylon dental floss, likely polyester core
PFAS Grade75ExcellentOverall Grade63Good⚠️70Fragrance allergens (mint flavoring)
Limited concern
🫧70Microplastic shedding during use
Limited concern
🏷️70Coating or wax additives (undisclosed)
Limited concern
Low PFAS risk, but brand silence limits assurance.
⚠Risky category by default
- 4
Oral-B
Oral B Satin Floss
Nylon filament (primary material)
PFAS Grade75ExcellentOverall Grade71Good🫧70Nylon filament fragmentation/microplastic ingestion
Limited concern
Lower concern; nylon floss unlikely to contain PFAS, but unconfirmed by brand.
⚠Risky category by default
- 5
Waterpik
Aquarius Water Flosser
ABS plastic, stainless steel, rubber seals
PFAS Grade75ExcellentOverall Grade67Good⚠️70Bacterial growth in water reservoir
Limited concern
⏳70Silicone rubber seal degradation
Limited concern
Lower concern. Standard water flosser materials pose minimal PFAS risk.
⚠Risky category by default
- 6
Waterpik
Ultra Water Flosser
plastic reservoir, electric motor, metal pump components
PFAS Grade75ExcellentOverall Grade71Good⚠️70Bacterial growth in stagnant reservoir water
Limited concern
Lower concern; water-contact device without known PFAS-prone coatings.
⚠Risky category by default
- 7
Waterpik
Cordless Advanced 2.0 Water Flosser
Plastic (ABS/acrylic), stainless steel, rubber seals
PFAS Grade75ExcellentOverall Grade67Good⚠️70Bacterial growth in water reservoir and seals
Limited concern
⏳70Acrylic reservoir clarity degradation
Limited concern
Lower concern. No PFAS-prone materials identified in standard construction.
⚠Risky category by default
- 8
Waterpik
Ultra Plus and Cordless Enhance 3000 Water Flosser Combo Pack
Plastic reservoir, motor, nozzle tips; standard polymer components
PFAS Grade75ExcellentOverall Grade63Good⚠️70Bacterial and biofilm growth in reservoir and tubing
Limited concern
🫧70Silicone tubing degradation and particle shedding
Limited concern
🫧70Microplastic release from worn nozzle tips
Limited concern
Water flosser with standard plastics; no known PFAS concerns identified.
⚠Risky category by default
Every dental floss that passes, side by side
Sorted by score. Higher is safer.
| # | Dental Floss | Score | Rating | Made of |
|---|---|---|---|---|
| 1 | Floss & Ploss Love of Earth Co. Floss + Glass Case | 90 | Excellent | Dental floss (plant-based or silk) and glass case |
| 2 | Waterpik Waterpik Cordless 1000 Water Flosser | 85 | Excellent | Plastic housing, ABS/nylon components, stainless steel tip, silicone seals |
| 3 | Floss & Ploss Burst Refillable Expanding Mint Dental Floss Set | 75 | Excellent | Nylon dental floss, likely polyester core |
| 4 | Oral-B Oral B Satin Floss | 75 | Excellent | Nylon filament (primary material) |
| 5 | Waterpik Waterpik Aquarius Water Flosser | 75 | Excellent | ABS plastic, stainless steel, rubber seals |
| 6 | Waterpik Waterpik Ultra Water Flosser | 75 | Excellent | plastic reservoir, electric motor, metal pump components |
| 7 | Waterpik Waterpik Cordless Advanced 2.0 Water Flosser | 75 | Excellent | Plastic (ABS/acrylic), stainless steel, rubber seals |
| 8 | Waterpik Waterpik Ultra Plus and Cordless Enhance 3000 Water Flosser Combo Pack | 75 | Excellent | Plastic reservoir, motor, nozzle tips; standard polymer components |
The dental floss we would skip
Lowest scoring in this category, worst first.
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
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
What we check on dental floss
- Confirmed PFAS, PTFE or fluoropolymer content, which is the heaviest penalty we apply.
- Stain, water or grease resistant treatments, which usually mean fluorinated chemistry.
- Whether the brand discloses what is in the product, or stays silent behind a “clean” claim.
- Independent lab results and certifications where they exist.
Full point-by-point rubric on the methodology page.
The dental floss brands that will not say
9 of the brands here publish nothing about PFAS at all. Silence is not evidence of harm, but it is why none of them score well on disclosure.
Colgate, Floss & Ploss, Gently, Glide, Listerine, Oral-B, Radius, Sensodyne, Waterpik.
Common questions about PFAS-free dental floss
Is dental floss PFAS free?
Mostly not. Of the 37 dental floss we have scored, 3% fail our PFAS and toxin screen, which leaves 36 that pass. The highest scoring is Floss & Ploss Love of Earth Co. Floss + Glass Case at 90 out of 100. The lowest is Colgate Colgate Total Waxed Dental Floss at 30.
What is the safest dental floss you have scored?
Floss & Ploss Love of Earth Co. Floss + Glass Case, at 90 out of 100, which we band as Excellent. It is dental floss (plant-based or silk) and glass case. The runner up is Waterpik Waterpik Cordless 1000 Water Flosser at 85.
Which dental floss should I avoid?
The three lowest scoring we hold are Colgate Colgate Total Waxed Dental Floss at 30, Floss & Ploss Burst Refillable Expanding Mint Dental Floss Set at 75, Oral-B Oral B Satin Floss at 75. The problem with the first is that lower concern, but wax coating origins unclear; no brand PFAS disclosure.
Which dental floss brands will not say whether they use PFAS?
9 of the brands we scored in this category publish nothing about PFAS at all, including Colgate, Floss & Ploss, Gently, Glide, Listerine, Oral-B. Silence is not evidence of harm, but it is the reason those brands cannot score well on disclosure.
Do you lab test dental floss?
No. We score from published ingredient lists, materials, certifications, disclosures and third party lab results where they exist. Where a product has been independently tested we use that result and say so.
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Does a particular brand of dental floss have PFAS?
We also wrote this up at length. PFAS in Dental Floss: Which Brands Grade Best and Worst
Want to filter the whole category yourself? Browse all 37 dental floss.