Cosmetic treatment for the hands (8)
I believe the answer is:
manicure
'cosmetic treatment for the hands' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for manicure that I've seen before include "Professional care for the hands" , "Trim" , "Care of hands and fingernails" , "Work on nails" , "Work on hand" .)