Do U by Kotex tampons have PFAS?
U by Kotex tampons average 70 out of 100 on PFAS Authority's PFAS and toxin screen across the 5 U by Kotex tampons graded as of October 2026, level with the 70 out of 100 median for the 17 other tampons brands graded alongside it.
U by Kotex tampons average Good on our four-band scale. 5 of the 5 we graded are worth buying. That is above 38% of the tampons brands we grade.
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
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Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
What U by Kotex says and does about PFAS
U by Kotex is a Kimberly-Clark brand, and Kimberly-Clark told Insurance Journal in 2024 that it does not use PFAS in any of its U.S. consumer products. Mamavation's lab found non-detect organic fluorine in U by Kotex Click compact unscented tampons. We found no PFAS lawsuit naming U by Kotex.
- Brand statementKimberly-Clark, parent of U by Kotex, said in a 2024 statement that it does not use PFAS in any of its U.S. consumer products. Insurance Journal ↗
- Independent testMamavation's EPA-certified lab found non-detect organic fluorine in U by Kotex Click compact unscented tampons. Mamavation ↗
Sources checked September 29, 2026. A brand statement is the company’s own claim, which we report but have not verified. Our grades are model-based estimates, not lab tests.
U by Kotex tampons worth buying Good or better, best-graded first
- rayon/viscose and cardboard applicator
- PFAS, PFAS-containing water repellents can be applied to cardboard during manufacturing, though not confirmed…
- rayon/cotton core, plastic applicator
- Toxic shock syndrome (TSS) from any tampon, TSS is rare but documented across all tampon types and brands…
2 hazards checked on this product, all on its full breakdown.
- Rayon/viscose, cotton, cardboard applicator
- Toxic shock syndrome (TSS) - general tampon risk, TSS is associated with prolonged tampon use and…
- rayon/viscose core, cotton/synthetic blend
- Skin irritation or allergic contact dermatitis from materials. Rayon/cotton blends are low-irritancy…
3 hazards checked on this product, all on its full breakdown.
- rayon/viscose absorbent core, cotton blend applicator
- Bleach residues (chlorine/dioxins). Rayon and cotton in tampons are typically bleached during manufacturing…
3 hazards checked on this product, all on its full breakdown.
Better tampons from other brands
Graded higher than the U by Kotex average of 70.
- 100% organic cotton
- A third party reports verifying it as PFAS-free
- Heavy metals
Natracare
Organic Super Plus Tampons, 3 x 20 ct
- organic cotton, cardboard applicator
- The brand calls it PFAS-free, which we have not verified
- Dioxins from bleaching
Natracare
Organic Cotton Super Plus Tampons
- organic cotton, no added fluorochemicals
- The brand calls it PFAS-free, which we have not verified
- Verified PFAS-free by a third party
The same question, asked of the other tampons brands
Best average grade first. U by Kotex averages 70.
See every U by Kotex product we grade on the U by Kotex brand page, or the full tampons ranking.