Does acetone do anything to copper?

Cleaning Copper: When to Use Acetone

Copper develops a natural patina over time, but heavy tarnish sometimes requires more than basic household cleaners. Acetone is one of the heavier-duty options available for restoring copper, though it should be used with caution and reserved primarily for extreme cases of oxidation or stubborn grime.

While acetone effectively dissolves heavy grease, oils, and deep discoloration, it is important to understand its impact on finished surfaces. Acetone can strip away lacquer and protective coatings from copper items. If your copper piece has a clear coat meant to preserve its shine or prevent aging, applying acetone will dissolve that barrier, leaving the bare metal exposed to rapid re-oxidation.

Before applying acetone, inspect your metal carefully. For uncoated copper with severe tarnish, apply a small amount of acetone using a soft microfiber cloth in a well-ventilated area, then rinse thoroughly. If the copper is sealed, varnished, or lightly tarnished, stick to milder cleaning methods like warm water with mild soap, or a specialized copper polish, to protect the finish.