Do school uniforms contain harmful chemicals?

School uniforms frequently contain problematic chemicals because they are designed for durability and easy care. Stain-resistant finishes on khakis and polo shirts often use PFAS compounds. Wrinkle-free and permanent press treatments use formaldehyde resins. Synthetic fabrics in uniform pants and skirts shed microplastics. A 2022 study testing school uniforms from major retailers found PFAS in a significant percentage of items marketed as stain-resistant.

Children wear uniforms for 6 to 8 hours daily, five days a week, for the entire school year, creating prolonged and repeated chemical exposure. The combination of tight-fitting areas (waistbands, collars), physical activity during recess, and the heat of warm classrooms creates conditions that increase dermal absorption of fabric chemicals.

When buying school uniforms, avoid items marketed as stain-resistant, wrinkle-free, or permanent press. Choose 100% organic cotton options where available, and look for OEKO-TEX certification. If the school requires specific suppliers, contact the administration to advocate for certified uniform options. Washing uniforms before first wear and choosing items without chemical finishes are practical steps to reduce your child's exposure.