I don't have a stylist that I go to on the regular, but the last one that I went to on the regular, I never tipped her because the money I paid for my hair went into her pocket anyway. She paid booth rent, so she could charge whatever prices she wanted and it's not like she charged $35 for a touch-up or something cheap like that, so I never tipped her. But then, she started pissing me off. She would charge me $55 for a service. And then she would tell me, "It's actually supposed to be $60, but I'mma charge you that." So, I felt kinda bad, and I gave her the extra 5, and she smiled and thanked me. Then she did the exact same mess on the very next visit!
That's when I caught on. She was trying to make me feel bad, although she was the one charging me the prices. If you're going to charge somebody something, don't charge them and then make them feel all guilty and tell them what it should've been. She didn't do that on the next visit after those 2 episodes, considering on the second one, I ain't give her the extra $5, but I ended leaving her because of my disgust for that and other reasons.
As for anybody else, if I am not "wowed" by a service, I simply don't tip. I am rarely "wowed." But, I went to one stylist who never "wowed" me, but she was cheap compared to other stylists in the area, so I didn't mind tipping her every now and then. A couple of bucks, never more than $5. The money went in her pocket as well, and the hair salon was in her husband's mother's house basement. (hated that place. I shouldn't have tipped her at all, now that I think about it)
I feel better about tipping those who don't get to pocket the entire amount of money, you know the ones that have to report their earnings, and they only get a percentage of what they made for that time period. The ones who get to keep the entire amount, and simply pay booth rent, well, I never feel bad if I choose not to tip them, since they get to pocket the entire amount of money, everytime someone pays them.
Call me el cheapo, but that's how I'm living.