Si Nian and Famous Silk are both available in Xie Tiao Street. They are relatively famous. Si Nian is better for hair cutting and Famous Silk for perming. The price is 30 for hair cutting and more than 100 for perm. Well, if you want to get a more expensive perm, you can get a membership card first, and you can get a 20% discount
There is also Mengxi Plaza to Taohuawu (you can take bus 10, 1, etc. to Mengxi Plaza and then Walking up) There are barbershops on the street over there, and the prices are a little cheaper. Personally, I think Fashion Bazaar is pretty good. It costs 10 yuan to get a haircut there
You can also go to Xietiao Street to buy some. For potions, go to a private store and ask them to process it. Of course it should be better, preferably one near the school. Ask them to help you get it.
If you know someone who is in a famous silk store, ask him to help you. Processing
I personally recommend buying potions yourself, because some potions are really harmful to hair~