Błędnie: She went to the barber’s to have her hair dyed. Poprawnie: She went to the hairdresser’s to have her hair dyed.
‘Hairdresser’ to “fryzjer”, natomiast “fryzjer męski” to ‘barber’, np. ‘Peter, go to a barber and get your hair cut’ (“Piotrek, idź do fryzjera i podetnij włosy”).