Minimizes wasteful overspray and increases cleaning and hair-rinsing performance, With a new nozzle pattern, internal waterway design, and air-induction system, Katalyst technology maximizes every water drop and creates a richer, more intense flow of water that heightens the shower's sensory experience, finishes resist corrosion and tarnishing, MasterClean sprayface is easy to clean, finishes resist corrosion and tarnishing, exceeding industry durability standards two times.