Polishes for enthusiasts (5)
I believe the answer is:
buffs
I believe this is a double definition.
'polishes' is the first definition.
(buffing is a kind of polishing)
'enthusiasts' is the second definition.
(I've seen this in another clue)
'for' is the link.
(Other definitions for buffs that I've seen before include "Experts" , "Enthusiasts" , "Aficionados" .)