Skin treatment: couple it with dressing (8)
I believe the answer is:
poultice
'dressing' is the definition.
(I've seen this before)
'skin treatment couple it' is the wordplay.
'couple it' can be anagrammed to 'POULTICE'.
However, I'm not sure how this is indicated.
'with' is the link.
Can you help me to learn more?
(Other definitions for poultice that I've seen before include "Soft material wrapped in cloth to relieve inflammation" , "It relieves inflammation" , "Couple it with soft heated mass applied to skin injury" , "Moist, hot, skin application" , "Preparation applied to reduce inflammation" .)