Dye hair from brown to black, perhaps (6)
I believe the answer is:
darken
(Other definitions for darken that I've seen before include "Dim" , "Grow blacker" , "shade" , "Make less light" , "Grow less light" .)
I believe the answer is:
darken
(Other definitions for darken that I've seen before include "Dim" , "Grow blacker" , "shade" , "Make less light" , "Grow less light" .)