The factory original paint on the top part of my front bumper under the headlights has lost its luster. Seems like the only way to get it back is to put a couple coats of wax on it, but that only seems to be a temporary solution. After a couple days its dull again. I havetried using a couple different waxes such as Meguire's cleaner wax, gold class & NXT (all of which I already had). Of course being black its that much more noticeable. Is there a more permanent solution that will last longer besides repainting?