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Ingredient · Preservative

2-hexanediol

Mixed · 6/10, higher is cleaner

How we reached this

Diol used as humectant + preservative booster. EWG hazard low. Some sensitization reports at high concentrations.

Sources · 1

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 2026-05-25.