A barber (from the Latin barba, "beard") is usually someone, most often male, whose occupation is to cut any type of hair, give shaves, and trim beards of men.
Although many barbers may still deal with facial hair when requested, in American and Commonwealth culture most barbers specialize in cutting men's hair.
A hairdresser is a universal term referring to someone whose occupation is to cut or style hair in order to change or maintain a person's image. This is achieved using a combination of hair colouring, haircutting and hair texture techniques.