hey there,
i am Ethiopian but now living in brazil, well there are so many hairdressers you can chooce from. like in Dembel City center...located in Olympia, bole road you can find more than one in there, and also personally a good one i think (well according to my bro) is Boston day spa which is located on bole road in front of Tana building and another one at wello sefer road, in front of Ibex hotel, they both have also massages and sauna baths. you can also find more on bole road like Kidus hair studio. the price ranges from 30- 75 birr based on the place and professionals. in case u are lost just stop and ask people. i am sure Ethiopians love to help. hope u r enjoying! 