Autoglym Magma is part of the Autoglym high performance product range, Autoglym recognise that your vehicle is under constant attack from airborne contaminants, many of these are tiny particles of iron that appear as specs on paintwork and brake dust on wheels, dulling their shine. The active ingredients in Autoglym Magma turn red as they react with these iron particles to safely loosen them from the surface to be easily rinsed away.