U by Kotex Ultra Thin Pads with Wings, Heavy Absorbency
Unknown PFAS risk; manufacturer discloses no materials or certifications.
U by Kotex does not publicly disclose pad materials or PFAS status. No third-party certifications found. Period products may contain fluorinated coatings or adhesives; contact brand for transparency.
The better-graded swap
Seventh Generation
Seventh Generation Maxi Pads - Overnight
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
absorbent core, nonwoven layers, adhesives (composition unspecified)
Lab data
No public lab test
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What U by Kotex Ultra Thin Heavy Absorbency is made of, ingredients and materials
U by Kotex Ultra Thin pads use an absorbent core (likely cellulose and superabsorbent polymer SAP), nonwoven top and back sheets, and adhesive to secure wings and backing. The brand does not publicly disclose specific material sourcing, chemical composition of adhesives, or SAP formulation. This opacity limits independent verification of chemical safety beyond what regulatory bodies mandate for menstrual products in the US.
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.
Adhesive composition and skin irritation potential
Kotex does not disclose adhesive chemistry; standard menstrual pad adhesives may contain acrylates or other chemicals that trigger contact dermatitis or irritation in sensitive individuals. No recalls or widespread complaints are on record for this product, but individual sensitivity cannot be ruled out.
What’s reassuring
Superabsorbent polymer (SAP) identity and purity
The specific SAP polymer used (likely sodium polyacrylate) is not publicly named by the brand. Regulatory-compliant SAP does not leach into menstrual flow at detectable levels under normal use, and no documented cases of SAP-related toxicity exist for this product line.
Nonwoven fiber composition and shedding
Nonwoven materials are typically polypropylene or polyester blends. No evidence of visible fiber shedding or microplastic migration into menstrual flow is reported for Kotex pads; manufacturing standards under FDA oversight reduce this risk significantly.
Fragrance or preservative allergens
U by Kotex Ultra Thin is marketed as unscented and does not list added fragrances; no formaldehyde-releasing preservatives or fragrance allergen documentation has surfaced for this product. Unscented status reduces irritation risk for sensitive users.
Heavy metals
No testing data or recalls related to lead, cadmium, or other heavy metals in Kotex pads are on record. FDA oversight of absorbent materials and water used in manufacturing reduces but does not eliminate theoretical contamination risk; third-party testing is not publicly available for this product.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Kotex (owned by Kimberly-Clark) does not publicly commit to PFAS-free formulations or publish full material transparency reports for this product line. The brand has not faced major recalls or documented safety controversies specific to this pad model, but maintains industry-standard minimal disclosure practices. No third-party certifications (e.g., Cradle to Cradle, OEKO-TEX, or allergen labeling) are marketed for these pads.
How it compares in its category
U by Kotex Ultra Thin sits in the mainstream, budget-friendly segment; competitors like Tampax, Always, and Kotex's own Kotex brand show similar disclosure levels. Higher-priced organic or certified alternatives (Seventh Generation, Cora, Lola) typically publish more detailed material sourcing and test for PFAS and heavy metals. U by Kotex's lack of added differentiation in safety claims is typical for conventional mass-market pads.
If you buy it
Store in a cool, dry place away from direct sunlight to prevent adhesive or material degradation. Replace pads every 4-6 hours or when saturated to minimize risk of moisture-related bacterial growth on skin. Discontinue use immediately if you experience rash, irritation, or allergic reaction and patch-test on inner arm if sensitivity is a concern. No special heat or chemical restrictions apply during normal use.
What is not known about PFAS in this product?
- Basis
- Model estimate, 32% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- U by Kotex has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
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2 hazards checked on this product, all on its full breakdown.
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- The brand calls it PFAS-free, which we have not verified
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Organyc
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- Cardboard applicator structural integrity over time
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70Cora Organic TamponsCompare vs Natracare →All period care →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.