This occupational analysis data was assembled to help cosmetology instructors develop a course of study. Following a job description for a cosmetologist, the remainder of the content in standard task analysis format presents an analysis of twelve cosmetologist duties (tasks). Each of the twelve duties is broken down into its components (one or more sub-tasks) and for each sub-task the following are given: task statement; tools, equipment, materials, objects acted upon; steps; safety-hazards; decisions; cues; errors; science skills/concepts; math-number systems skills/concepts; and communications (includes performance modes, examples, and skills/concepts). The cosmetologist duties covered are managing the business and shop, maintaining the dispensary, sanitizing and sterilizing equipment, performing manicures and pedicures, performing skin care, performing scalp care, shampooing and rinsing hair, cutting and shaping hair, waving and relaxing hair, bleaching and coloring hair, styling hair, and caring for the wig. (EM)