Sunstar Butler Gum EasyThread Floss, Sample Pack, 100/Pk, 3200PQ
Lower concern. Dental floss carries minimal PFAS risk.
Sunstar Butler makes standard nylon dental floss with no public PFAS disclosure. Floss products have not been flagged for PFAS contamination in consumer testing, making this a lower-concern category.
We flunk more products than we pass. This one earned its grade. How we grade
Material
nylon dental floss, uncoated or standard coating
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Sunstar Butler Gum EasyThread Floss is made of, ingredients and materials
Sunstar Butler Gum EasyThread is nylon monofilament dental floss, typically uncoated or with a standard wax coating (composition not fully disclosed on public records). Nylon is a synthetic polyamide polymer with low oral toxicity and does not leach harmful monomers under normal use. The wax coating, if present, is food-grade and designed to slide between teeth without dissolving or releasing chemicals into saliva during brief daily use.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Fragrance allergens (if flavored variant)
This product line includes unflavored and flavored variants. If mint or other flavor is added, fragrance compounds are present but in minimal quantities and brief oral contact makes sensitization risk low; no brand-specific adverse event reports are on record.
Microplastic shedding from nylon filament
Nylon monofilament can shed microscopic fibers during vigorous flossing, but ingestion amounts are negligible and no systemic toxicity from floss microplastics has been established in clinical literature.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Dental floss wax coatings do not typically contain formaldehyde-releasing resins; no public testing or reports of formaldehyde exposure from nylon floss products exist.
Source, ATSDR ↗Heavy metals
Sunstar Butler Gum EasyThread floss is typically white or minimally colored; no cadmium, lead, or chromium contamination has been reported in nylon dental floss from any manufacturer.
Source, FDA ↗Wax coating degradation or ingestion
Food-grade wax does not leach or decompose during normal flossing and is low concern if accidentally ingested in small amounts; no toxicity concern exists.
The full breakdown
The brand's record and disclosure
Sunstar is a Japanese multinational oral care manufacturer with no public safety recalls on this floss product line. The company does not proactively disclose full material composition or PFAS testing results on consumer-facing channels, but dental floss as a category has not triggered regulatory concern or independent testing flagging contamination. No established history of hazardous chemical findings in Sunstar oral care products is on record.
How it compares in its category
Nylon floss is the dominant material in the dental floss market and carries no higher chemical risk than competitors using the same polymer. Waxed nylon variants (like this product) are functionally equivalent to unwaxed or flavored alternatives in terms of safety profile. Floss is a low-dose, brief-contact oral product, so systemic chemical exposure from any brand is negligible compared to other daily-use personal care items.
If you buy it
Use once daily as directed; no special storage precautions are needed beyond keeping the pack dry. Nylon floss does not degrade with heat or sunlight in normal home conditions. Discard and replace when the floss shreds, frays, or no longer glides smoothly; a 100-pack typically lasts several months. No maintenance or cleaning of the floss itself is required.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Sunstar has made none
Formulations change between production runs, so check the current label. How we grade.
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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.