My headlights got crazy clear after just the cleaner. But the polish really brought out the shine. You can probably use the cleaner and then put on a coat of plastx which you can get in a small trial envelope for $1 at autozone, which is enough for both headlights. Then juts finish it off with a few layers of wax, i used the burgundy cleaner meguiars wax, for more shine and protection, especially from fogging.
-ivan c.