A licensed professional who cuts, styles, and shaves hair, typically in a barbershop setting. In Japan, 理容師 is legally distinct from 美容師 (beautician), focusing on cutting and shaving rather than makeup and perms.
He got his barber's license and opened his own shop.
To become a barber, you must pass the national exam.
Compound of 理容 (riyō, 'barbering, hairdressing') + 師 (shi, 'master, professional'). 理容 itself is from 理 (ri, 'arrange, manage') and 容 (yō, 'appearance, form').