Has anyone had any luck with the headlight restoration kits available?? For "fun", I purchased a $10 clearance Turtle Wax brand kit to use on my wife's car. It seemed to clear up the haze just a bit, but after a few rains and car washes, it reverted back to the original haze. Needs to be done again, but wanted some info from folks that have had good luck on similar products. Thanks!