Cocofloss · Dental Floss
Cocofloss Mega Spool and Dispenser
Lower-concern dental floss; no PFAS-typical chemistry, but brand provides no explicit assurance.
Cocofloss markets its floss as coconut-based cellulose, a natural polymer unlikely to contain PFAS. Dental floss rarely requires water-repellent or stain-resistant coatings that would trigger PFAS use. The brand does not disclose PFAS status, leaving modest uncertainty about any processing aids or minor coatings.
Shop Cocofloss on Amazon →Material
Coconut-derived cellulose fiber dental floss
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Cocofloss is manufactured from cellulose fibers derived from coconut husks, a plant-based alternative to traditional nylon floss. This material choice avoids the synthetic polymer chemistry typical of conventional dental floss, which often incorporates wax coatings (sometimes Teflon-type coating-based) and polyester components. Coconut cellulose is biodegradable and does not contain the halogenated compounds or persistent organic pollutants associated with conventional floss. The Mega Spool format is primarily a dispensing convenience feature with no material safety implication beyond standard cellulose fiber handling.
The brand's record and disclosure
Cocofloss has built its market position on eco-friendly and material-transparency messaging, emphasizing plant-based sourcing. However, the brand does not publish third-party certifications (NSF, FDA material listing, or independent laboratory testing) for chemical contaminants or provide explicit written assurances regarding PFAS absence. Public disclosures focus on sustainability and compostability rather than toxicological safety data. This silence on chemical testing is typical for smaller personal care brands but represents a gap in transparent hazard accountability.
How it compares in its category
Most conventional dental floss uses nylon monofilament or multifilament with polytetrafluoroethylene (Teflon-type coating, Teflon) or wax coatings, both of which carry potential PFAS or other synthetic chemical concerns. Cocofloss's cellulose base avoids these synthetic polymer pathways entirely. Competitors using natural fibers (silk, hemp) exist but are less common; most mainstream brands (Oral-B, Glide, Reach) rely on nylon or Teflon-type coating-coated variants. Cocofloss occupies a genuinely differentiated position in avoiding synthetic fiber chemistry, making it a lower-chemical-burden choice within its category.
If you buy it
Cocofloss cellulose fibers are non-toxic during normal use and do not degrade under oral temperature or moisture conditions. The dispenser mechanism is typically plastic; store in a cool, dry environment to prevent mold growth on the cellulose if the spool is left exposed for extended periods. Standard floss replacement should follow normal consumption cycles; there is no accelerated degradation hazard or leaching risk from the product itself. Discontinue use if individual fiber strands cause gum irritation, as this reflects user sensitivity rather than product defect.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Microbial contamination (dispenser housing)
Plastic dispenser components may harbor bacterial or fungal growth if exposed to moisture over time, though cellulose fiber itself resists microbial colonization. Risk is minimal with standard hygiene and storage practices.
Allergen (natural fiber sensitivity)
No documented allergic reactions to coconut cellulose floss in clinical literature. Individuals with coconut allergy may theoretically exhibit oral contact sensitivity, but this is not established for cellulose derivatives and would be rare.
Colorants and dyes in floss
Cocofloss products are typically undyed or minimally colored; no azo dyes, heavy metal pigments, or synthetic colorant hazards are documented. Any coloring used appears to be food-grade or natural-origin based on brand positioning.
Coating leachables (wax or sizing agents)
Cellulose floss may contain minimal food-grade wax or natural sizing; no evidence of leaching of synthetic chemicals, plasticizers, or halogenated compounds specific to this product.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Dental Floss
Cocofloss
Refill Trio
Coconut fiber, based floss with plant-based coating
Lower-concern dental product; natural materials and transparent PFAS stance, but no independent verification.
⚠Risky category by default
Dental Lace
Refillable Silk Dental Floss
Silk floss with compostable refillable packaging
Lower concern; silk floss with credible PFAS-free positioning and third-party certification.
✓Verified PFAS-free by a third party
Dental Lace
Plant Based/Vegan Floss Refillable Glass Container PFAS-Free (2 Spools/4-
Plant-based vegan floss (likely plant cellulose or silk fibers)
Lower-concern product with explicit PFAS-free claim; no third-party verification limits certainty.
⚠Risky category by default
More dental floss grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.