i need some help. i dont think its possible to fix but its worth a try. i bought my gf a nissan maxima, and she never cleans it. i washed it while she was on vacation in august and it is very oxidized. i waxed it with a mothers cleaner carnube wax and it looked gorgeous. the minute it got wet it looked like a@@ again. wat can i put on over the wax to not let this happen?