Pain soother (4)
I believe the answer is:
balm
'pain soother' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for balm that I've seen before include "skin cream" , "Soothing substance" , "Soothing ointment for lamb (4)" , "Something soothing" , "that will soothe the skin" .)