Brilliance finishes are designed to maintain a pristine look for life with no corroding, tarnishing or discoloration. This is achieved through a process known as Physical Vapor Deposition (PVD), where molecules are embedded deep into the faucet’s surface to create a virtually indestructible bond. This creates a finish that resists abrasions and discoloration better than traditional special finishes and, in many cases, better than chrome.Tested with over 100 household cleaners, the abrasion resistance of the Brilliance® finish can even withstand repeated scouring with steel wool. A Brilliance® finish is guaranteed not to corrode, tarnish or discolor for the life of the faucet. It can even withstand prolonged exposure to harsh coastal environments.