The five important principles of hair design are: proportion, balance, rhythm, emphasis, and harmony. Hair type is defined by two major characteristics: wave patterns and hair texture.

Hairdressers undertake work that creates a more permanent change in the appearance of their clients. This includes haircuts, chemical treatments, permanent hair extensions, and hair colouring. They can also do hair styling, or hand over the client to a hairstylist. Hairstylists primarily do temporary styling of hair.

A hair salon is a business that provides clients with a variety of hair-related services. Haircutting, regular and formal styling, chemical treatments (color, highlights, perms, and keratin treatments), hair and scalp treatments, and beard and mustache shaping are all included.

A beauty salon is an establishment that offers a variety of cosmetic treatments and cosmetic services for men and women. Beauty salons may offer a variety of services including professional hair cutting and styling, manicures and pedicures, and often cosmetics, makeup and makeovers.