What does the cryptic crossword clue "Skin treatment: couple it with dressing (8)" mean?

The wordplay uses an anagram. anagram of COUPLE (synonym="COUPLE") + IT (synonym="IT") = POULTICE The answer is POULTICE.

Skin treatment: couple it with dressing (8)

Guardian Cryptic #29602 | 5 Across | 2025-01-27 flower