Well I tried this out yesterday and wow it actually works nicely. Using turtle wax polishing compound I applied several coats to my headlamps including all the crevices on the sides of em and the top (where it's the worst). After buffing all the polishing cream off after it dried I noticed immediately how much clearer and newer the lenses looked. Obviously buying a brand new one would be the better way to go in order to look 100% brand new (since it is lol), but for three dollars and 15 minutes, this is really worth it. I wish I had before and after pics to prove it, but unfortunately i don't have any pics close up with the lights before.