Save soap (3)
I believe the answer is:
bar
I believe this clue is a double definition.
'save' is the first definition.
(both can mean 'except')
'soap' is the second definition.
(bar soap is a kind of soap)
(Other definitions for bar that I've seen before include "Obstruct" , "Sandbank; pub counter" , "Pub room; sandbank" , "some chocolate" , "Prevent; sandbank" .)