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.

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. Other cosmetic services may not be available in a true hair salon.

hair salon. noun [ C ] /ˈheə ˌsæl.ɒn/ us. /ˈher səˌlɑːn/ a shop where people go to have their hair cut and put into a particular style.

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.