PlainLabel Tested facts about everyday products, for Canadian parents.
← All findings Caution

Stain-resistant school uniforms tested positive for PFAS "forever chemicals"

ClothingLast checked Oct 10, 2026

Do this instead

  • Skip "stain-resistant" or "wrinkle-free" labelsThose finishes are where PFAS are used.
  • Choose untreated cotton uniformsAsk the supplier if the fabric has a stain treatment.
  • Wash new uniforms before wearingWashing can remove some surface treatments over time.

The short version

Researchers including a University of Toronto co-author tested stain-resistant school uniforms from nine popular brands. All of them contained PFAS, often at levels similar to outdoor gear. Kids wear uniforms against their skin for hours a day, for years.

The evidence

A 2022 peer-reviewed study in Environmental Science & Technology tested stain-resistant uniforms from nine brands sold in North America. Every uniform contained PFAS, mostly fluorotelomer alcohols, at levels comparable to outdoor clothing.[1]

Sources

  1. Green Science Policy Institute: High levels of PFAS detected in school uniforms (2022)

Spot an error or have newer test results? Email corrections@doctorsoni.ca and we'll review it. How we decide verdicts