Brought my very first bottle of showroom shine from greased lightning last week after having several people recommend it. i have a black astra and have tried everything to clean it, but all methods somehow seem to smeer somewhere on the car.
the showroom shine is great. simply spray on, wipe over with a mircofibre cloth to remove dirt, then buff to a shine with a 2nd clean microfibre cloth. sounds simple, and i was very sceptical whether it was going to work on a car which had got 2 weeks worth of dirt and grime on... but the results were simply amazing. no pre-washing involved, not water involved, except for cleaning the alloys up with. on chrome, well, i have never seen chrome so shiny, windows no smeers, lights crystal clear, the showroom shine is just perfect. the photos say it all: