Here you go. Polish your frets with this. Polish your guitar strings with this. Even brand new ones (and you'll be shocked what it does to most new strings) and then every few plays after that for the strings.
I have an un-named guitar that I bought used from Brian's that rhymes with Axis, that STILL has the strings on it from when he sold it too me, because I polished them as soon as I got it and many times since. And the key, they don't just PLAY good, they still sound good! Here is the magic wand fellas, and it's not my idea. Some guy at TGP told me. But this is the best $10 you'll ever spend on guitar gear, and you can get it at Walmart! Make sure to get the silver one, not gold. And just do exactly what it says.