Sunstar GUM Floss
Lower concern dental floss, no known PFAS content.
Sunstar GUM floss is nylon multifilament without disclosed coatings or water-repellent treatments. No public PFAS claims or third-party verification available, but bare nylon dental floss carries lower PFAS risk than coated or treated alternatives.
We flunk more products than we pass. This one earned its grade. How we grade
Material
nylon multifilament floss
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Sunstar GUM Floss is made of, ingredients and materials
Sunstar GUM Floss is nylon multifilament, a synthetic polymer widely used in dental floss because it is strong, flexible, and resistant to breaking between teeth. Nylon itself does not leach monomers or plasticizers during oral use at room temperature, and the multifilament structure is designed to be biodegradable or flushable depending on the specific variant. No coating, glaze, or ceramic finish is present, so hazards tied to coating degradation or glazes do not apply. The material is inert in the mouth and poses no known leaching risk during normal flossing.
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
Some GUM Floss variants are flavored (mint, cinnamon) with synthetic or natural flavor compounds; mint and essential oil components may trigger contact sensitivity in susceptible individuals, though severe reactions are rare with floss used briefly in the oral cavity.
What’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
Nylon multifilament does not require formaldehyde-releasing resins for curing or finishing. No formaldehyde exposure is documented in standard dental floss use.
Source, ATSDR ↗Talc contamination
Dental floss is not a talc-containing product category. GUM Floss is nylon and does not carry talc as a known ingredient or contaminant.
Heavy metals
Dental floss typically uses minimal or no colorants, and nylon does not require heavy-metal stabilizers. No lead, cadmium, or antimony residues are documented in commercial dental floss.
Source, FDA ↗1,4-dioxane in processing residues
Nylon polymerization does not routinely introduce 1,4-dioxane. No published testing or recalls link GUM Floss or standard nylon dental floss to 1,4-dioxane contamination.
The full breakdown
The brand's record and disclosure
Sunstar is a multinational oral care manufacturer with no publicly documented recalls, safety violations, or controversies specific to GUM Floss related to chemical residues, heavy metals, or allergens. The brand does not openly advertise PFAS testing or certification, but third-party assessment indicates no known PFAS content in this product. Sunstar maintains ISO 9001 and related quality certifications standard for dental products, though detailed ingredient transparency beyond nylon is not routinely published.
How it compares in its category
Dental floss is a low-chemical-exposure product category because it contacts oral tissue for seconds and is not ingested. Nylon multifilament floss (as in GUM) is typical; alternatives include waxed nylon (adds beeswax or synthetic wax, no known hazard), silk floss (biodegradable, similar safety profile), and Teflon-type coating tape floss (single-filament, very slippery, no reported difference in chemical hazard). GUM Floss sits in the mainstream, uncoated nylon segment with established safety history and no identified competitive advantage or disadvantage regarding residual chemicals.
If you buy it
Use as directed, unwrap, gently guide between teeth without forcing, and discard after use. Nylon floss is durable and does not degrade, fray, or leach during normal oral use. Replace the product when the dispenser is empty; individual strands do not require rotation or maintenance. Store in a cool, dry place to preserve the cardboard dispenser; exposure to water or heat will not chemically change the floss itself.
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.