McKee’s 37 Xtreme Iron Remover is the solution to remove iron particles from your car's paint. It's pH balanced and 100 percent acid free. On a wet car just spray directly on all exterior surfaces and wait a few minutes for it to turn red. This indicates it is dissolving ferrous (iron containing) particles. Hose off and wash car. Then, apply a coat of your preferred wax (one of ours hopefully) The paint work will look glossy than ever! This product works great on neglected wheels too.