I must say, there has to be some different plastic and/or coatings used from the factory. My Tacoma started to fade, so I cleaned them up, MANY TIMES.They will fog up in around 30 days or so, no matter what I clean with or coat with. It's been just over a month since I cleaned them, and two weeks since I coated them with UV protectant, and they are so fogged up, you can't see the bulbs at all thru the top half of the lens.