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Ingredient · Structural polymer

Spandex (Elastane)

Mixed · 6/10, higher is cleaner

How we reached this

Polyurethane-polyurea elastic fiber providing stretch in diaper waistbands + leg cuffs. Inert at intact-skin contact. Some individuals develop contact-allergy to component dyes or finishing agents. Mid-rated for the synthetic + non-biodegradable profile.

Sources · 1

  • EWG Skin Deep — Spandex / Elastane

Also listed as

Spandexelastanelycraspandex

Products containing this · 6

About this rating

Ratings run 1–10, higher is cleaner, and are set editorially against the sources above — see the methodology page for how an ingredient rating becomes part of a product score. Last reviewed 2026-05-24.