Environment in which one's working as a hairdresser (7)
I believe the answer is:
setting
'environment' is the definition.
(I know that environment can be written as setting)
'one's working as a hairdresser' is the wordplay.
I cannot quite understand how this works, but
'as' could be 'in' (I've seen this in other clues) and 'in' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'in which' acts as a link.
Can you help me to learn more?
(Other definitions for setting that I've seen before include "making up a crossword puzzle" , "Mount for gem" , "Metal holding a gem" , "Surroundings; hardening" , "Environment" .)