Maybe I'm late to the party. But I just discovered and started using this polish while restoring hardware with some rust on/in the chrome. It really does an incredibly good job. Nothing restores any underlying pits, etc., but this polish is quite effective.
It's not as 'quick' as WD-40 and 0000 steel wool, but it does a better job of making things shine.
Just passin ' it along, FWIW. (kinda like the Barkeeper's Friend cymbal thing)