A cosmetology license is a license that a stylist must obtain in order to find a job in the cosmetology field. Following graduation from a cosmetology school comes the State Board Test. This is a test which instructors critique you on doing different tasks involving hair, facials, and nails. In order to successfully own your own salon, or obtain a job doing such services, you must have present a
. cosmetology license. You also will need such a license to practice hair in your own home.