you don't mix the bars with anything. you either need a decent powered electric motor buffer or a speed controlled die grinder on air with an assortment of wheels that you use the compounds (rouge as the title says) to polish out the metal.
i'm in the process of polishing my entire zx6r at the moment, and after doing the full wheel instead of the lips, i would suggest against doing the whole thing unless it's a show bike.
here's what mine looked like after about 20 hours of stripping, sanding and polishing
and that's not even a show quality job, it's for an everyday rider