Over time, iron particles from your brake pads wear off and contaminate your wheels and paintwork. This also combines with general dirt and grime and makes your alloys look discoloured and dull which could potentially cause damage over time. Using Dragon's Blood, you can remove all iron contamination from your wheels, paintwork, glass and more and restore the shine they once had. Dragons Blood has a pH-neutral formula so it is acid-free and has no Alkalis, making it safe to use on all vehicles. The iron fallout remover is designed for use on wheels but can be used anywhere else on a car's exterior where iron contamination occurs - wheels, paintwork, glass, mirrors and rubber. It may smell but it gets the job done. (We always suggest testing in an inconspicuous area first if you are unsure). ProKleen Dragon's Blood Iron Contamination Fallout Remover 4 x 5L in Clear