Iron wash is an effective acid free decontamination cleaner suitable for car bodywork , wheels, plastic and windows. Iron Wash is specially designed for small metal particles such as rust , which have adhered to the paint and surrounding areas . In addition, Iron Wash removes stubborn brake dust from wheels and hubcaps. Iron Wash is a pH - neutral product so it is safe on bodywork , wheels , plastic , windows, chrome and metals. It is always recommended to do a small test on the area before applying fully.