Crest · Dental Floss
Crest Glide Pro Health Comfort Mint Mint Floss 43.7 oz
Lower PFAS concern; standard floss product with no known PFAS-prone features.
Crest Glide Pro Health Comfort is a conventional nylon dental floss with no reported PFAS treatments, water resistance coatings, or stain-resistance finishes typical of high-risk products. Nylon itself is not inherently PFAS-containing; PFAS risk would arise only from added coatings or treatments, which are not disclosed or evident.
Shop Crest on Amazon →Material
Nylon dental floss with mint flavor
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 Pro Health is nylon-based dental floss coated with wax (typically polyethylene or paraffin) and mint flavoring compounds. Nylon is a thermoplastic polymer with a long safety record in oral care; it does not leach monomers or known endocrine disruptors under the brief, low-temperature conditions of flossing. The mint flavoring is likely menthol or synthetic mint compounds, which are FDA-approved food additives and pose no systemic risk from trace oral exposure during flossing.
The brand's record and disclosure
Crest (Procter and Gamble subsidiary) has no public recalls or safety alerts specific to this floss product. The brand does not actively disclose PFAS testing results for floss, consistent with industry silence on the issue. P&G maintains general safety certifications for oral care products but has faced broader scrutiny on transparency regarding chemical contents in personal care lines; however, dental floss is not a primary focus of external safety campaigns.
How it compares in its category
Dental floss is one of the lowest-risk consumer products chemically, as it contacts oral tissues for seconds and is not ingested. Nylon floss is standard across major brands (Oral-B, Glide, Johnson & Johnson Reach); waxed variants like this one are marginally safer than unwaxed because the coating reduces direct fiber-tissue contact. This product's large 43.7 oz bulk size poses no additional chemical risk compared to smaller packages, only convenience.
If you buy it
Use as directed without concern for heating or special storage; floss is shelf-stable and requires no maintenance. Replace the spool if the mint flavor diminishes or the floss frays, typically after 3-6 months of regular use. Store in a cool, dry place to prevent wax coating degradation, though this affects only physical efficacy, not safety. If you have oral sensitivities to mint, test on a small area first, though allergic reactions to approved mint flavorings are rare.
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.”
Synthetic mint flavoring (menthol or fragrance allergens)
FDA-approved mint and menthol compounds are standard in floss and oral care. No established systemic toxicity or common allergic reactions reported for Crest Glide floss specifically; localized sensitivities are rare and would manifest as mild irritation.
Nylon monomer leaching (caprolactam)
Nylon polymers used in floss do not release monomers under oral conditions (room temperature, brief contact, low pH). Industrial-grade nylon floss meets FDA biocompatibility standards for this material class.
Wax coating composition (polyethylene or paraffin)
Food-grade wax coatings on floss are not known to leach harmful substances during brief oral contact. Both polyethylene and paraffin are FDA-approved for food contact; neither is a known hazard in floss form.
Colorants or dyes in floss
Crest Glide typically uses approved food dyes or titanium dioxide for white or tinted floss. No azo dyes, heavy metals, or restricted colorants have been reported in this product line.
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
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Refill Trio
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⚠Risky category by default
Dental Lace
Refillable Silk Dental Floss
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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-
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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.