Well, after a good pre-wax prep/wash with Dawn dish soap on my 06 Envoy (yes my friends, Dawn. It's the best pre-wax cleaner for the money!!). A good claying, and three coats of Liquid Glass (4hrs. curing time in the sun after each application) my silver Envoy kicks ass!! This stuff is amazing, and it last for a long time. $27.00 total for the the whole job. A little WD-40 to remove the haze off the trim, followed by some Meguiar's Vinyl & Rubber protectant on those parts, my job is complete. Liquid Glass baby!! I've used this stuff for over 30yrs......Oh my god, I let the cat out of the bag!!!!!