Stop cutting curly hair daily (3,4)
I believe the answer is:
per diem
'daily' is the definition.
Both the definition and answer are adverbs. Perhaps there's a link between them I don't understand?
'stop cutting curly hair' is the wordplay.
'stop' becomes 'die' (I've seen this in another clue).
'cutting' means one lot of letters goes inside another (some letters cut their way into a word).
'curly hair' becomes 'perm' (perm is a kind of hair. I am not sure about the 'curly' bit.).
'die' placed into 'perm' is 'PER DIEM'.
Can you help me to learn more?
(Other definitions for per diem that I've seen before include "For each day (Latin)" , "living expenses" , "By the day, to the old Romans" .)