Kotex · Panty Liners
Kotex Core Daily Wrapped Liners
Lower PFAS concern; standard period-care materials without disclosed water-resistance treatment.
Kotex Core Daily liners are absorbent cotton-rayon blends without advertised waterproof or stain-resistant coatings that typically trigger PFAS use. The brand makes no PFAS disclosure.
Shop Kotex on Amazon →Material
cotton, rayon, adhesive (nonwoven blend)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
period care 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
Kotex Core Daily liners use a nonwoven blend of cotton and rayon (viscose) as the absorbent core, with synthetic adhesive on the backing for adherence to underwear. Cotton is a natural fiber with low chemical reactivity; rayon is regenerated cellulose and similarly stable when used in thin personal-care applications. The adhesive is the variable component and is typically a synthetic polymer (acrylate or rubber-based), which poses minimal leaching risk under normal body-temperature exposure in this low-moisture application.
The brand's record and disclosure
Kotex (Kimberly-Clark subsidiary) does not publicly disclose detailed material certifications, chemical testing, or supply-chain audits for this product line. The brand has faced no major recalls or contamination scandals specific to panty liners in recent public records. They have not made explicit statements about PFAS use or avoidance in period-care products, leaving water-resistance treatment status unclear. No third-party certifications (e.g., Oeko-Tex, Cradle to Cradle) are claimed for this product.
How it compares in its category
Panty liners as a category carry lower chemical-exposure risk than pads or tampons because absorbency demands are minimal and products are thinner. Kotex Core Daily is mainstream/conventional tier, positioned between budget brands and premium organic alternatives like Cora or Rael. Material composition (cotton-rayon blend) is industry standard and does not differentiate it significantly; the main variance in the category is PFAS water-resistance coatings, which are common in mass-market brands but often undisclosed. Pricing and accessibility suggest no premium safety investment relative to competitors.
If you buy it
No special storage or handling precautions are necessary; standard pantry-dry conditions are sufficient. Replace after each use as intended; liners are single-use disposable and degradation or adhesive failure is not a practical concern over hours. If you experience skin irritation, consider sensitivity to fragrance (if scented variant) or synthetic adhesive, and switch to unscented or hypoallergenic alternatives. Check ingredient/material lists on packaging if allergies to rayon or synthetic polymers are a concern, though reactions 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 adhesive leachables
The backing adhesive is not chemically characterized in public materials for this product. Acrylate and rubber-based adhesives used in panty liners are generally considered stable under skin-contact conditions at body temperature, but data on migration into genital skin microbiome is limited.
Rayon processing residues (formaldehyde, heavy metals)
Rayon production uses sodium hydroxide and carbon disulfide, with potential trace formaldehyde or metal residues in finished fiber. No specific testing or recalls have been reported for Kotex panty liners; rayon safety in thin personal-care products is considered standard practice.
Fragrance allergens (if scented variant)
Kotex Core Daily is available in both scented and unscented versions. Scented variants carry typical fragrance-allergen risk (limonene, linalool, etc.) common to all scented period-care products; genital skin sensitivity is more common in this category than with unscented.
Microplastic shedding from nonwoven backing
Synthetic nonwoven backings can shed microfibers, though panty liners are single-use and brief-contact, minimizing dermal exposure compared to reusables. No quantified shedding data is publicly available for this specific product.
PFAS water-resistance coating (undisclosed)
Kotex does not disclose whether water-resistant treatment is applied to Core Daily liners. Given the category assessment of lower PFAS concern (no heavy water-repellency claims), treatment is less likely than in premium or scented variants, but absence of statement means uncertain exposure.
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 Panty Liners
Organyc
Maxi Panty Liners
organic cotton, hypoallergenic absorbent core
Lower-concern choice; organic cotton core with PFAS-free positioning, though lab independent verification remains limited.
✓Verified PFAS-free by a third party
Organyc
Folded Panty Liners
organic cotton, cellulose
Lower-concern choice; organic cotton liners with credible certifications, but no explicit PFAS transparency.
✓Verified PFAS-free by a third party
Natracare
Curved Panty Liners
organic cotton, viscose, plant-based materials
Lower-concern buy: organic cotton liner with strong transparency and third-party oversight of material sourcing.
✓Verified PFAS-free by a third party
More panty liners 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.