Crest · Dental Floss
Crest Glide Mint Dental Floss 54.6 Yards
Lower PFAS concern; standard waxed nylon floss with no known PFAS-risk indicators.
Crest Glide is a conventional waxed nylon dental floss with no published PFAS claims or disclosures. Nylon and food-grade wax are not inherent PFAS carriers, and dental floss does not typically undergo water-repellency or stain-resistance treatments that commonly use PFAS.
Shop Crest on Amazon →Material
Nylon filament with wax coating
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
Crest Glide uses nylon monofilament as its core material, coated with wax to reduce fraying and improve glide between teeth. Nylon is a synthetic polymer that does not leach harmful chemicals during normal oral use, as the floss makes brief contact with saliva and is not heated or damaged during typical flossing. The wax coating (typically paraffin or similar food-grade waxes) serves a functional purpose and poses no inhalation or ingestion risk at the small quantities present.
The brand's record and disclosure
Crest is owned by Procter & Gamble, a large consumer health company with established quality controls for oral care products. The brand does not publicly emphasize PFAS absence in dental floss marketing, nor does it disclose detailed material sourcing for this product category. No recalls or safety incidents specific to Crest Glide floss are on record. Dental floss is a low-risk category that does not typically trigger ingredient transparency demands the way cosmetics or cookware do.
How it compares in its category
Waxed nylon floss is the most common floss type; Crest Glide is a mainstream, middle-market option comparable to brands like Oral-B and store-brand alternatives. Unwaxed floss and natural-material floss (silk, bamboo) exist as alternatives but offer no safety advantage over nylon for most users. Some consumers prefer Teflon-type coating-free floss due to PFAS concerns, though standard nylon floss does not inherently contain Teflon-type coating unless specifically marketed as such.
If you buy it
Store at room temperature in a dry location; waxed floss does not require special handling. Use once daily or as recommended by a dentist; a single container lasts weeks with normal use. Discontinue use only if gum irritation or allergic reaction occurs (rare). No maintenance is needed; simply discard used sections and reseal the container to prevent dust contamination.
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.”
Wax coating ingestion
Small amounts of food-grade paraffin wax may be swallowed during flossing but pose no toxicity risk; wax is inert and passes through the digestive system unchanged.
Nylon filament mechanical injury
Vigorous or incorrect flossing technique can cause minor cuts to gum tissue; this is a user-error hazard, not a product defect. Quality nylon floss is smooth and low-risk when used as directed.
Dental floss aspiration (choking risk in young children)
Any floss product poses a choking hazard to children under 5 if unsupervised; this is a storage and supervision issue, not a defect in the product itself.
Allergic reaction to wax or nylon
No documented allergic reactions to Crest Glide floss are on record. True allergy to nylon or paraffin wax is extremely rare in the general population.
Bacterial or mold growth in container
Dental floss containers are designed to limit moisture ingress; no routine maintenance or special hygiene protocols are needed to prevent contamination.
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.