Tint from hairdresser in Sevenoaks (5)
I believe the answer is:
rinse
'tint' is the definition.
(I know that rinse is a type of tint)
'from hairdresser in sevenoaks' is the wordplay.
'from' indicates a hidden word.
'RINSE' is hidden within 'hairdresser in sevenoaks'.
(Other definitions for rinse that I've seen before include "Wash - siren (anag)" , "Sluice" , "Remove soap with clean water" , "Use water to remove soap" , "Swill out" .)