IME, avoid stuff larded with silicone -- it stays slippery for ages!! Damn near broke a
wrist when two-manning a cab through a doorway, because we couldn't grip the shell when it
started to flip.
First go with kitchen "scrubbies" with a bit of soap like
Mother Murphy's. Blue is the lightest & takes off crud. Then green on localised scuffs
If you need to brighten it further, then judicious dabs of paste
wax. Spread it thin, let it matte up, & buff it off. If a spot needs darkening, try
wax shoe-polish, again with the buffing.
resident troublemaker, http://forum.frugalguitarist.com/