✨ Unleash the shine with DeCon Pro! ✨ Watch the magic as it turns purple! Perfect addition to your detailing arsenal. Neutralizes rust-causing brake dust reactions. Safe for all wheel types and finishes. Elevate your car care game with DeCon Pro! iron catalyst turns purple 16 fl oz capacity pH balanced formula Chemical Guys SPI21516 Decon Pro Iron Remover and Wheel Cleaner is a 16 fl oz pH balanced formula designed to safely clean wheels, brakes, calipers, tires, and exteriors. Its unique iron catalyst reacts with contaminants, turning purple to indicate effectiveness, making it an essential tool for any car enthusiast looking to maintain their vehicle's pristine condition.