Does Humble Brush dental floss have PFAS?
Humble Brush dental floss averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 Humble Brush dental floss products graded as of October 2026, level with the 75 out of 100 median for the 21 other dental floss brands graded alongside it.
Humble Brush dental floss averages Excellent on our four-band scale. 4 of the 4 we graded are worth buying. That is above 48% of the dental floss brands we grade.
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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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.
Humble Brush dental floss worth buying Good or better, best-graded first
- bamboo bristles, bamboo handle
- We found no PFAS statement from the brand
- Microorganism growth in natural fiber bristles. Bamboo bristles retain moisture more readily than synthetic…
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. Bamboo bristles are often bonded to handles using formaldehyde-containing resins…
5 hazards checked on this product, all on its full breakdown.
- Bamboo handle, nylon floss picks, charcoal coating
- We found no PFAS statement from the brand
- Microplastics. Nylon floss fibers may shed microscopic fragments during normal use, but ingestion via floss…
- Bamboo handle, nylon bristles
- We found no PFAS statement from the brand
- Bamboo handle splinter or degradation risk. Bamboo is softer than plastic and can splinter if dropped or…
2 hazards checked on this product, all on its full breakdown.
Better dental floss from other brands
Graded higher than the Humble Brush average of 75.
- 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
The same question, asked of the other dental floss brands
Best average grade first. Humble Brush averages 75.
See every Humble Brush product we grade on the Humble Brush brand page, or the full dental floss ranking.