Crest · Dental Floss
Crest 3D White Radiant Whitening Floss 30-Unit Pack
Lower concern; typical dental floss with no known PFAS triggers, but Crest makes no public PFAS statement.
Crest 3D White floss is a standard nylon monofilament product with no documented Teflon-family coating, nonstick treatment, or water-repellent finish, the main vectors for PFAS in consumer goods. The brand does not disclose PFAS status. No public lab testing or recall data exists for this SKU.
Shop Crest on Amazon →Material
Nylon monofilament 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 3D White Radiant Floss is nylon monofilament, the most common floss material globally. Nylon is an inert thermoplastic polymer that does not leach into the oral cavity during normal use because saliva contact is brief and the monofilament is intact. The "3D White Radiant" variant includes mild abrasive particles (likely silica or similar whitening agents) on the floss surface to provide gentle polish during interdental cleaning; these are food-grade polishing compounds with no known oral toxicity at exposure levels during flossing.
The brand's record and disclosure
Crest (Procter & Gamble) does not publicly disclose PFAS content in dental floss and makes no specific statement on per- or polyfluoroalkyl substances in this category. P&G has faced scrutiny over PFAS in other product lines (notably some water-resistant textiles) but dental floss is not among documented P&G PFAS controversies. The brand holds standard dental safety certifications (ADA Seal of Acceptance for original Crest floss lines) but specific third-party testing of this variant is not on public record.
How it compares in its category
Nylon monofilament floss is the safest common floss material; alternatives like dental tape (waxed or unwaxed), Teflon-type coating multifilament, or silk carry similar or higher risk profiles depending on coating chemicals. Crest's whitening variant is typical for mass-market products; the abrasive load is comparable to competitor whitening floss (Oral-B, Colgate). No chemical advantage or disadvantage versus plain nylon floss from the same or competing brands.
If you buy it
Use once daily; nylon monofilament typically lasts 30 uses or until visible fraying. Do not force floss between teeth (risk of gum trauma unrelated to chemistry). Keep the container sealed to prevent mold or bacterial growth if stored in high-humidity bathrooms; replace the pack if floss develops visible discoloration or odor. No special heat or storage restrictions apply to nylon floss.
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.”
Abrasive particle ingestion or gum irritation
The whitening particles (silica or similar) are mild and food-safe, but prolonged aggressive flossing or pre-existing gum disease may allow minor particle contact with abraded tissue. This is a mechanical risk, not a chemical toxicity hazard, and is not specific to Crest.
Nylon microplastics from floss breakage
If floss tears or shreds during use, small nylon fragments may be swallowed. Nylon is not digestible and passes through the GI tract; no systemic toxicity is established, but microplastic ingestion is a theoretical concern for all synthetic floss products.
Bacterial or mold growth on stored floss
Nylon itself is resistant to microbial colonization, but if the container is left open or stored in damp conditions, contamination of the floss or dispenser is possible. This is a storage and hygiene issue, not inherent to the product chemistry.
Formaldehyde or other resin coatings
Nylon monofilament floss does not require formaldehyde-releasing binders or resin cures in manufacturing. No public reports of formaldehyde detection in Crest or competitor nylon floss.
Heavy metal contamination (lead, cadmium, mercury)
Nylon polymer synthesis does not involve lead or cadmium pigments; whitening agents (silica) are not mercury sources. No recalls or testing reports for heavy metals in Crest dental floss.
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.