Used a Holts headlamp restoration kit for these, it worked pretty well but basically it's some 800/1000/1500/3000 grit wet''n'dry paper, some fluid which I'm sure is T-Cut, and some polish which looks and smells suspiciously like ordinary furniture polish. Rotary polishing mop is good though. Finally refurbished the silver CLK alloys, saved £200 doing it myself but it was extremely laborious. That car is being prepped for sale, it looks bloody good after many hours of cleaning and scrubbing of the interior. Pale grey interior + dogs = nope sorting the rusty panel on the VFR too. I'm even tackling the oil leak on my CLK - it's the rocker cover gasket, easy enough just never been arsed.