Makeover (6)
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I believe the answer is:
revamp
'makeover' is the definition.
(a revamp is a makeover or refurbishment)
This is the entire clue.
(Other definitions for revamp that I've seen before include "overhaul" , "Give new appearance to" , "Refurbish" , "get in better shape" , "Make new, improve or up-date" .)