Caring for copper sinks is not as difficult as it might seem. Unlike using harsh and abrasive chemicals and cleaners like you would on other sinks, you just need to use mild soap and a soft cloth. About once a month you should use a specially formulated copper wax designed for sinks to help protect the copper surface. The wax is designed to help promote water run-off and maintain the appearance of the copper.
Copper Sinks Have Natural Properties to Regenerate the Patina
Copper sinks have natural properties which will regenerate the patina on the surface over a short period of time. This is important to know, should you get a scratch in your sink or notice a discolored area. You should hold off on using copper sink wax until the area has naturally repaired itself. You can still clean the sink using a soft cloth and a mild soap during this time.