A cosmetologist, sometimes called a beautician, or a beauty specialist, is a worker who specializes in giving beauty treatments. The recipients of these treatments are usually women, however, there is a growing number of men interested in these treatments. A cosmetologist is proficient in all forms of beauty care and can give hair treatments, facials, skin treatments, and nail treatments.

There are specific disciplines of cosmetology that some cosmetologists may specialize in. The different types of special cosmetologists include hair stylists, shampooers, manicurists. Many cosmetologists specialize in at least one of these categories.

Hair Stylist - A hair stylist specializes in the styling of hair, including cutting, chemical perms (relaxers, curls, waves) and color treatments. Hair stylists can also apply hair extensions and weaves. Hair stylists can also shampoo and condition client's hair, though this is not always necessary. Some hair stylists also give recommendations and perform work on wigs and hairpieces.

Manicurist - A manicurist specializes in nail care, including manicures, pedicures, and nail extensions.

Shampoo Technician - The shampoo technician is a sub-category of the hair stylist. A shampoo tech shampoos and conditions a client's hair to create a balanced hair care finish for the hair stylist. Shampoo techs are normally only employed by a corporate or concept salons,and large volume beauty salons that are operated simultaneously.