Kotex Ultra Thin Pads
Skip until brand discloses waterproofing chemistry.
Kotex Ultra Thin uses a waterproof backing layer but does not disclose the coating material or PFAS status. The waterproofing chemistry is unspecified, raising uncertainty about PFAS presence.
The better-graded swap
Organyc
Organyc 100% Certified Organic Cotton Tampons Cardboard Applicator
100/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
nonwoven fibers with waterproof backing (coating unspecified)
Lab data
No public lab test
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What Kotex Ultra Thin Pads is made of, ingredients and materials
Kotex Ultra Thin Pads are constructed from nonwoven fibers (typically polypropylene or polyester blends) with an unspecified waterproof backing coating. The backing layer is critical for absorbency and leak prevention but the manufacturer has not publicly disclosed the chemistry of that coating. Nonwoven fibers themselves do not typically leach hazardous compounds when in contact with skin, but the waterproofing agent remains a black box and is the source of the poor PFAS safety grade.
What’s concerning
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
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.
PFAS
The backing coating material is not disclosed; PFAS chemicals are commonly used in waterproofing for period products. Kotex has not confirmed or denied their use or provided alternative chemistry details.
Source, ATSDR ↗Adhesive or fragrance irritants
Product labeling does not detail adhesive or fragrance chemistry. Some menstruating individuals report sensitivity to pad adhesives or fragrance; without ingredient disclosure, individual sensitivity cannot be pre-screened.
Coating degradation over time or with heat
Unspecified waterproof backing may degrade if stored in high heat or direct sunlight, potentially compromising leak protection. No test data on file for this product's backing durability under shelf-storage or body-heat conditions.
What’s reassuring
Nonwoven fiber irritation or fragmentation
No recalls or reported skin sensitization specific to Kotex Ultra Thin nonwoven composition. Standard polypropylene/polyester nonwovens are not associated with leaching or microplastic shedding in this application context.
Bacterial or mold growth if wet or stored improperly
No product-specific hazard on record, but any period pad can harbor bacteria if left damp or in warm conditions. Standard hygiene practices (frequent changes, dry storage) mitigate this universal risk.
How is this PFAS grade calculated?
The brand's record and disclosure
Kotex (Kimberly-Clark subsidiary) has not published detailed ingredient lists or waterproofing chemistry disclosures for this product line. The brand has not made public commitments to phase out PFAS in period-care products or to supply third-party test data. No major recalls or substantiated contamination incidents are on public record for this specific product, but the silence on waterproofing materials contrasts with growing competitor transparency in the category.
How it compares in its category
Many period-care brands now disclose waterproofing agents or commit to PFAS-free formulations; Kotex does not. Competitors including Seventh Generation, Natracare, and some private-label brands have published ingredient transparency or PFAS commitments. Kotex Ultra Thin is positioned as a mainstream, budget-friendly option and does not claim organic, natural, or chemical-free positioning, which may reflect lower R&D investment in ingredient disclosure.
If you buy it
Store in a cool, dry place away from direct sunlight and moisture to prevent any backing degradation or odor. Change pads every 4-8 hours depending on flow to reduce skin irritation risk and bacterial growth in moist conditions. If skin irritation, rash, or odor occurs, discontinue use and patch-test an alternative brand. Given the PFAS concern, consider switching to a brand with disclosed waterproofing chemistry or PFAS-free certification as a longer-term choice.
What is not known about PFAS in this product?
- Basis
- Model estimate, 35% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Kotex has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Kotex Ultra Thin Pads?
- A third party reports verifying it as PFAS-free
- Fragrance allergens (if scented variant)
2 hazards checked on this product, all on its full breakdown.
- organic cotton with natural fibers
- The brand calls it PFAS-free, which we have not verified
- Microplastics
Organyc
100% Certified Organic Cotton Tampons Cardboard Applicator
- 100% organic cotton with cardboard applicator
- We found no PFAS statement from the brand
- Cardboard applicator structural integrity over time
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