Hairstylists are a part of the service industry and it’s customary to tip 15 to 20 percent of the total service amount. You are, of course, not obliged to provide any tip, but all stylists are greatly appreciative of your gratuity as a reflection of your satisfaction with their work.
Most hairstylists work with an apprentice who often takes charge of shampooing and blow-drying. If you can and if you are pleased with their work, it’s not unusual to tip the apprentice a small amount, anywhere between $2 to $5. You can hand your tip directly to the apprentice when she/he is done shampooing your hair or you can also specify a tip to the apprentice when you pay for your entire service.