How to avoid scheduling chaos for hair coloring and perming appointments in a salon?

You can't schedule coloring and perming appointments based on a single service duration; hair length, hair quality, and whether it has been bleached all affect the turnaround. I have the front desk ask three extra questions during booking: current hair color, target result, and the date of the last chemical treatment. For complex orders, have the client send photos to the stylist in advance so…