Skin balm (4)
I believe the answer is:
aloe
'skin balm' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aloe that I've seen before include "Bitter fruit" , "Succulent plant (4) 5532" , ". . . . vera, soothing plant" , "Plant source of purgative drug" , "Succulent plant (may be bitter!)" .)