Straight hair, you can go to Smaji in Zhongjie (I don't remember clearly, it's still Meski), and there is the shape of Asan. In fact, straightening hair is a barber's skill, and the other is related to your own hair quality. Different hair qualities have different effects.
There is also silk dew and rain.
Generally, a good barber shop may be more expensive to do straight hair, and the price should range from 200 to 400.