Before and after. The before was actually after using a headlight restoration kit. Had to use more desperate measures to restore these lamps.

Update: I ended up buying automotive finishing sand paper. Started with 400, 800, then 1000. Then i followed it up with MqGuires compound (would have started with Scratch-X if i had any on hand), then the Mother's headlight restorer Polish. I was using a ball and drill too, of course.