I used it and it somehow screwed up the paint on my front bumper cover. I have a milano red GSR (original paint, original oem body parts, never wrecked or repainted), and after using the liquid clay bar and polish, the paint was very dull looking and since then I have washed it, used a real clay bar, and real carnuba wax and it still looks like shit. The liquid clay bar must have some sort of solvent or other chemical like a degreaser which made my clear coat cloudy or something.... I used to work for a car lot detailing cars about 5 years ago when I was in highschool, so I know what I am doing. I followed the directions exactly, and it turned out like shit. it also did something similar on the spoiler. the polish worked good on the trim and lights and most of the rest of the car, but ruined the paint on the painted urethane and fiberglass parts (bumper covers and spoiler)

It may not be noticeable on other colors, but if you have a red car I would stay away from it.

I have pretty much a full bottle of the liquid clay bar and polish that I will sell for $15 (I paid $32 for both)