All products
9

Ingredient · Additive

carbonic acid

Cleaner · 9/10, higher is cleaner

How we reached this

Carbonic acid (dissolved CO2 in water). FDA GRAS. Same as carbonation.

Sources · 1

Products containing this · 1

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.