Well today, i looked at my friends Lexus SC400, and i was pretty disgusted by how the headlight wasn't even clear and appeared slight yellow. So what i started doing was wetsanding the headlight up with 2000grit sand paper to clear it up. The sandpaper cleared it up pretty good, then i used my PC and buffed with 3M Rubbing Compound (fine cut) and it worked like a charm. I thought i might've needed a plastic polish but i guess 3M Rubbing compound works. The lense looked practically new....