Because - one service charges a different rate per stylist or colorist... For example a womens haircut... we have 5 different rates depending on who is doing it. It would be confusing to the customer to put women's haircuts 5 times with a stylists name behind it. Most of our services are a different rate for per staff member as well all of our services. It would be so easy just to put out 10% service charge in and that is what it would be for all services and who ever does them.