A faucet finish that peels, bubbles, or turns green is more than cosmetic -- it exposes the base metal underneath to water, accelerating corrosion. Chrome plating is thin (0.0002 inches) and once it breaks, the underlying brass or zinc corrodes rapidly. The cause matters: harsh cleaners dissolve the finish over time, hard water etches it, and manufacturing defects cause premature failure. If the faucet is under warranty (Moen, Delta, and Kohler offer lifetime finish warranties on many models), you get a free replacement. If not, you are looking at a new faucet.