Copper looking flushed made well again (5)
I believe the answer is:
cured
'well again' is the definition.
(I've seen this in another clue)
'copper looking flushed' is the wordplay.
'copper' becomes 'Cu' (chemical symbol).
'looking flushed' becomes 'red' (being red in the face).
'cu'+'red'='CURED'
'made' acts as a link.
(Other definitions for cured that I've seen before include "Freed of disease" , "Successfully treated" , "Remedied" , "Preserved by drying, salting or smoking" , "Made well" .)