Shower sponge (6)
I believe the answer is:
loofah
'shower sponge' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for loofah that I've seen before include "Dishcloth gourd" , "tropical plant" , "Bathroom scrubber" , "Dry sponge used for scrubbing" , "Bath sponge made from dried plant fibres" .)