Not even wearing a wig? (6)
I believe the answer is:
rugged
I believe this clue is a double definition.
'not even' is the first definition.
(rugged can mean bumpy or uneven)
'wearing a wig?' is the second definition.
(rug can informally mean a wig)
(Other definitions for rugged that I've seen before include "Jagged" , "Rocky, uneven" , "Tough, craggy, sturdy and strong" , "Rough-hewn or rocky" , "designed for heavy use" .)