[BigMofoFrog]

There is a product called Novus 1, 2 and 3 in varying grit so to speak. I use it on an acrylic aquarium and had the same issue on my wife's Ford Windstar smoke bugshield. I was amazed at the difference it made, it looked almost new again and goes on like a polish and buffs off. It took 3 or 4 applications to get it looking really nice. Hope this helps. Worked well on the headlight clear plastic as well.