Perioe · Dental Floss
Perio Twist Interdental Cleaner Pack of 5
Lower-concern category; no PFAS-prone materials evident, but brand discloses nothing.
Perio Twist interdental cleaners are simple mechanical cleaning tools, typically nylon bristles and plastic handles, with no inherent reason to contain PFAS. The brand makes no public PFAS claims or certifications. No third-party lab data exists for this product.
Shop Perioe on Amazon →Material
Nylon or polyester bristles, plastic handle (typical for interdental cleaners)
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
Perio Twist uses nylon or polyester bristles mounted on a plastic handle, both common in interdental cleaners. Nylon bristles are chemically inert during normal oral use and do not leach under saliva exposure or room temperature. The plastic handle is a minor contact surface during brief daily use, so leaching risk from handle polymers (if unidentified) remains low compared to cookware or food storage products.
The brand's record and disclosure
Perioe (the South Korean oral care brand) does not publicly disclose material sourcing, third-party safety testing, or certifications for this product. No recalls or safety controversies have been established in available records for Perio Twist or the parent brand. The silence on PFAS and other chemical specifications is typical of smaller regional dental brands and does not indicate known contamination.
How it compares in its category
Interdental cleaners (picks, floss, brushes) occupy a low-risk category because contact is brief, intraoral, and non-heated. This product is materially equivalent to mainstream competitors (Oral-B, Tepe, GUM) that use identical nylon or polyester bristle technology. No significant safety differentiation exists between brands in this category.
If you buy it
Store in a dry place to prevent bristle mold growth if water is retained. Replace the cleaner when bristles splay, fray, or lose shape (typically 2-4 weeks of daily use). Do not heat or autoclave at high temperatures, as plastic handles may warp. Rinse after each use and allow to air dry fully.
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.”
Bristle degradation and particulate shedding
Nylon and polyester bristles can fragment with heavy pressure or repeated use. Shed microfibers are swallowed in small quantities during interdental cleaning; risk is negligible for occasional use but accumulates with daily application over months.
Bacterial or fungal growth on bristles
If bristles remain wet or are stored in humid conditions, saprophytic bacteria or mold can colonize nylon. This is a hygiene risk, not a material toxicity issue, and is prevented by air drying.
Plastic handle leachables (unidentified polymer)
The plastic handle material is not specified by the brand. Contact time during use is minimal (seconds per day), and no oral pH or saliva studies have flagged leaching from typical interdental cleaner handles. Risk is theoretically low but unquantified by the brand.
Formaldehyde or azo dyes in bristles
Nylon and polyester bristles are not known to contain residual formaldehyde or synthetic azo dyes. No recalls or test reports have identified these in commercial interdental cleaners.
Allergic contact reaction to bristle polymer
Nylon and polyester are hypoallergenic for most users, but individuals with rare contact sensitivities to synthetic polymers may experience gum irritation. This is product-specific sensitivity, not a manufacturing defect.
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.
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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.