Crest · Dental Floss
Crest Glide Deepclean Floss Mint, 15m 72
Lower PFAS concern; typical nylon floss with no known risk factors, though Crest makes no public PFAS disclosures.
Crest Glide Deepclean is standard nylon dental floss without disclosed water-resistant or non-stick coatings that typically require PFAS. Dental floss is not a known high-risk PFAS product category. No independent lab testing or brand certification on PFAS status is publicly available.
Shop Crest on Amazon →Material
Nylon 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
Crest Glide Deepclean is a nylon-based dental floss, a standard polymer material widely used in oral care. Nylon does not leach significant chemicals into the mouth during normal flossing (brief contact, minimal moisture exposure, no heat). The mint flavoring is a cosmetic additive applied to the floss surface; mint itself is not a known toxicant at typical exposure levels in this application.
The brand's record and disclosure
Crest (owned by Procter & Gamble) does not publicly disclose PFAS content or manufacturing practices specific to dental floss, though P&G has made limited commitments to phase PFAS from some product lines. No significant safety recalls or controversies are documented for this floss product. The brand maintains FDA compliance for oral care products but does not provide third-party certifications beyond regulatory baseline.
How it compares in its category
Dental floss is a low-hazard product category overall; nylon variants like Crest Glide are mainstream and comparable in safety profile to most commercial options (Oral-B, Reach, generic nylon). Silk and charcoal floss alternatives claim minimal difference in safety but lack stronger toxicological evidence. This product offers no material advantage or disadvantage versus standard nylon competitors.
If you buy it
Use floss daily as directed; nylon floss is safe for all age groups and gum types. Store in a cool, dry place to prevent mold growth in the container. Replace spools when floss becomes frayed or difficult to handle. No special precautions are needed beyond normal oral hygiene practice. Do not ingest floss or allow young children unsupervised access.
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.”
Dye and flavor additives (mint, colorants)
Mint flavoring and any surface dyes are applied in minimal quantities and have no established toxicity in brief oral contact. No adverse reactions or contamination concerns are documented for this product line.
Nylon polymer degradation or shedding
Nylon floss does not degrade significantly during normal use (seconds to minutes contact per day). Microfiber shedding is not a recognized concern for dental floss unlike some synthetic textiles, and any trace fibers are not retained in the mouth.
Microbial growth in storage container
The plastic or cardboard spool housing can harbor bacteria or mold if stored in high-humidity environments over months. This is a general concern for any floss product, not specific to Crest; regular container replacement reduces risk.
Choking hazard (children and pets)
Dental floss is a known aspiration and choking hazard if swallowed, particularly for children under 6 and pets. This is inherent to the product category, not a defect of Crest Glide specifically; adult supervision is essential.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% 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.