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Ingredient · Cleaning Active

1,4-Dioxane

Concerning · 1/10, higher is cleaner

How we reached this

Manufacturing-process contaminant. IARC Group 2B (possibly carcinogenic). NY State requires <1ppm in consumer cleaners (effective 2023).

Sources · 2

  • IARC Monograph 71: 1,4-Dioxane
  • NY State 1,4-Dioxane Law (2020)

Also listed as

dioxane

Products containing this · 2

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 2026-05-23.