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6

Ingredient · Adhesive / resin

Hydrogenated polycyclopentadiene

Mixed · 6/10, higher is cleaner

How we reached this

Synthetic resin tackifier in diaper adhesives. Inert at the dermal interface. End-of-life landfill concern rather than acute exposure.

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.