Better on brake dust
The ingredients that create the iron reaction are an important part of this formula and the more brake dust you have, the more dramatic the colour change will be. Our extensive testing of multiple formulas we created and other highly regarded products already on the market, showed some interesting things when it comes to the colour change and brake dust removal. Many that had an extreme colour change, did not really clean dirty wheels that well. Learning from this, we have made this version so it has the colour change effect people like to see if you have bad brake dust issues, but if you don't have bad brake dust, you will still get a reaction and be happy that we have put a stronger emphasis on the next item below.