Oil-rubbed bronze is considered a living finish, meaning it has no protective coating and is made to change in appearance over time. But if you have oil-rubbed bronze faucets or fixtures that are susceptible to soap scum, this is not part of the normal change that occurs. The soap scum buildup on the bronze diminishes the beauty of the surface. Clean soap scum from oil-rubbed bronze the right way to preserve the integrity of the surface.
Wipe away as much of the soap scum as possible with a damp soft cloth.
Blend equal parts distilled white vinegar and warm water into an empty spray bottle. Spray the bronze generously with the mixture.
Wait 10 minutes, then scrub the bronze with a sponge. Wipe with a dry, soft cloth to remove residue.
Moisten paper towels with distilled white vinegar if the scum is still there. Lay the paper towels over the soap scum spots. Let them remain overnight, then remove them and wipe the bronze clean the next day.