IronX is an acid free PH balanced chemical iron remover that safely removes embedded iron particles from all vehicle surfaces. When IronX comes into contact with iron particles (brake dust, rail dust) it will change colors from clear to purple. Over time iron particles from brake dust and rail dust become embedded in a vehicle's paint. If these contaminants are left unattended over time, they will cause a vehicle’s paint to rust from the inside out. These tiny rust spots are know as “rust blooms” and are especially visible on white and silver colored vehicles.