At the moment there's a 3 for 2 deal on at halfords so i got the meguires clay kit some meguire polish and i got a couple of scraches on my car so the 3 rd item i got for free was meguire scratch x.... So i clay-ed waxed polished my car then i got me thinking because the scratch x takes a fine layer of laquer off your paint maybe i could blob it on my nav screen it took me about 15 mins ....Got some cotton buds in the corner here's the results the screen is like new its amazing stuff because my screen was a real mess with scratches and like blobs so I'm really happy with the result and its great on scratches to got a lot out of the paintwork and after claying my car damn its smooth likes glass ...