How common are traveling cosmetologists who do hair in clients’ homes?

I read an article about this. i have heard of cosmetologists doing hair in their own residence. This young lady is a licensed cosmetologist that takes her stuff to her customer's residence and does their hair. She was doing this woman's hair, and then she was going to do her husband's next (You can see his leg to the left). I will be honest. I have heard of traveling massage therapists, but not traveling cosmetologists. I am just curious. How common is this? Have any of you ever experienced or heard of this?

How common are traveling cosmetologists who do hair in clients’ homes?
How common are traveling cosmetologists who do hair in clients’ homes?
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