What does the cryptic crossword clue "How padre's wing possibly needs item for cleanliness (7,6)" mean?

The wordplay uses an anagram. anagram of HOW + PADRE'S + WING = WASHINGPOWDER The answer is WASHINGPOWDER.

How padre's wing possibly needs item for cleanliness (7,6)

Daily Mail Cryptic #16959 | 19 Across | 2022-11-02 flower