Iron Decon is specially formulated to be a pH-balanced solution that gets rid of embedded and bonded iron build-ups from brake dust and industrial fallout. It works on both visible and invisible deposit build-ups. The color changing formula lets you know when it’s finished by turning a deep purple after a few minutes of being applied. This allows for more effective decontamination, ensuring that painted and metallic surfaces aren’t left to corrode even after regular detailing services.