Fix and save salon (4,3)
I believe the answer is:
'salon' is the definition.
'fix and save' is the wordplay.
'fix' becomes 'nail' (I've seen this before).
'and' means one lot of letters go next to another.
'save' becomes 'bar' (I've seen this before).
(Other definitions for nail bar that I've seen before include "Type of beauty parlour" , "Manicurist's establishment" , "Manicure salon" .)