* Hairstylist/Hairdresser/Stylist: These are general terms for someone who works with hair, including dyeing.
* Colorist: This term specifically refers to someone who specializes in hair coloring techniques.
* Hair Dye Specialist: This is a more specific term for someone who has expertise in hair dyeing.
* Barber: While often associated with men's haircuts, barbers can also dye hair.
The best term to use will depend on the specific situation. For example, if you are talking about someone who works in a salon and specializes in hair coloring, you would likely call them a colorist. If you are talking about someone who dyes their own hair, you could simply say "they dye their hair" or "they color their hair."