I was polishing my chrome and plastic today and thought I'd just give a decent tip on cleaning plastic. Don't neglect your plastic! I showed these off my wheel cover pop offs because my headlight lenses were already clean so I had no good before and after on those. The pop off on the right was polished at that point and the one on the left wasn't. You can expect the same results on headlight lenses and wood grain trim that is coated inside the car.
I don't use this product for most solid or non-clear abs plastic materials or rubber window trim, for those I use a VLRP cleaner like Klasse to get off the oxidation and then a top coat for protection like Zaino 16. You can just spray armor all over the oxidixed plastic, but this will look better and last longer. The portion and left is old plastic and to the right is Klasse cleaner with Zaino 16 trim sealant. Same process for the trim piece that goes along front bumper and any other abs plastic, it looked worse then the back bumper before I treated it. Incidentally, these are the same exact products I use on the fiber glass roofs on bronco's or Cladding on Chevy Avalanches. "Clean the Oxidation, then apply protectant" works for just about everything when restoring.
I use the same process for cleaning plastic pieces as I do chrome, apply cream or cleaner with cotton, and buff, then wipe off with micro fiber cloth, I buy the cheap ones at costco they work great. Once you use those plush micro fibers on chrome or plastic cleaning, you'll never use anything else. really makes it easy.