I've been reading up on polish-related issues pertaining to guitars. I think I've been trying too hard to look for something that works in this aspect without opening up avenues to consider non-guitar products (*DUH*). Professionals dealing with this matter recommend the Turtle Wax brand for body & hardware polish.
The CHROME POLISH you see above works very well in returning shine to faded, oxidized metal parts. However, do not expect a return-to-original condition, just expect something impressive. It also works well in removing fundametal rust/corrosion so I had an enjoyable time seeing some of my slightly rusty frets return to life.
The RUBBING COMPOUND is another effective worker; it simply relights my gloss-layered guitar bodies (& headstocks). Also, those minor scratches were invsible as well but it takes tme to work in the effect; you need to apply maybe 2 - 3 layers & really buffing it off with a separate cloth but it's worth the sweat.
You can purchase these items at the local petrol station because they are essentially car-related products to begin with but they cost less at GIANT supermarket :-)