Drying aid (5)
I believe the answer is:
towel
'drying aid' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for towel that I've seen before include "Bathroom item" , "Bathroom cloth" , "This could dry up" , "what sweater needs?" , "Piece of absorbent cloth or paper for drying" .)