I was looking forward to my appointment at the hairdresser for a week, but suddenly I got sick and couldn’t go. I feel bad, and I’m really sorry for canceling the appointment. I need to talk to my hairdresser, but I’m wondering what I should say.
I wish you had gone; it turned out silly 
I experienced something similar last month. I just called and said I’m sick, and there was no problem.
Is the hairdresser usually overly booked? Or are they generally flexible?
@yazipsildim is generally a busy person but can squeeze things in from time to time. This is the first time something like this has happened.
@biseydiycem how could someone who is sick go anywhere? You’ll spread it to someone else, is hair really that important?
If you know the hairdresser, be honest; no one judges others for being sick. Cancellations can be a big deal for small businesses, so call and apologize while suggesting a new date.
Also, find out if the slot you canceled has been filled by someone else. It’s important to know if you kept them waiting for nothing; that will change the extent of your apology.