Bath sponge (6)
I believe the answer is:
loofah
'bath sponge' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for loofah that I've seen before include "Bath scrubber" , "Fibre used as a bath-scrub" , "Dry sponge used for scrubbing" , "cleaner" , "Dishcloth gourd" .)