Not dyed, it's to be expected (7)
I believe the answer is:
natural
'be expected' is the definition.
(thesaurus)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for natural that I've seen before include "Organic" , "Without affectation" , "in a pack, not wild?" , "Not made, normal" , "Relaxed, unaffected" .)