CarPro Paint Decontamination Kit Iron X by CarPro is an acid-free, pH-balanced iron remover that decontaminates auto paint and wheels. Iron X prevents the spread of iron-related damage to protect your vehicle from paint system failure. Iron X is a clear solution in the bottle but it turns purple when it comes into contact with sintered iron particles. Iron X Paste has a long dwell time to work as long as needed to remove iron and brake dust spots. The paste formula is excellent on vertical panels, wheels, and isolated spots. Tar X safely lifts grease, tar, asphalt, insects, tire marks, adhesives, traffic film, and any other stubborn contaminants. There are no harsh chemical solvents and nothing to harm your vehicle. When Tar X is applied generously, it glows on dark or black cars. The visibility makes it easy to remove all of Tar X when rinsing. To use this kit, start with a clean vehicle. Apply Iron X Spray over the vehicle and wipe it in with a damp sponge. Apply Iron X Paste on vertical surfaces and/or wheels. Wait 5 minutes for Iron X to change color. Wipe it off with a damp sponge and then rinse off the entire vehicle. Dry the vehicle well.