Almost any fine grit polish will work.
I use turtle wax chrome polish, a buddy uses fiberglass polish. I suppose baking soda or powder & water would work fine too. Alot of elbow grease is involved.
Heres something at Advance Auto I've been wanting to try:
My son didn't beleive me, then I did a quick few minutes on one side of his Talon with my orbital buffer (not the best tool to use for this) & chrome polish and he was astounded with the results. Of course he drove around 'one-eyed' for a few weeks before finally getting off his rear and doing the other side...LOL
98 SSEi 111,222 miles.
Intense PCM, LS6 Valve springs, PEMS, FWI. Hawk Street Pads.