The average tip for a hair stylist should be 20% of the bill.
The amount of the tip will depend on the service, but it is good etiquette not to tip beneath 15%.
Stellar service will result in higher tips, so this is why it is important to always do your best to please your clients.
Many states require hair stylists to be paid a minimum hourly rate so that they do not need to rely solely on tips for their wage.