Compostable Dental Floss vs Refillable Silk Dental Floss: which is safer?
These two grade almost identically. Pick on price and preference; neither has a PFAS edge.
Dental Lace
Compostable Dental Floss
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Plant-based cellulose (wood pulp), organic mint flavoring
Confidence
82%
PossibleHeavy metals in organic ingredients
PossibleMold or bacterial growth in storage
Dental Lace
Refillable Silk Dental Floss
PFAS grade
A 100/100
Overall grade
A 92/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Silk floss with compostable refillable packaging
Confidence
78%
PossibleMicrobial contamination in refillable container
PossibleAllergic reaction to silk protein or plant wax
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More dental floss: see the full ranking