Oklahoma Cosmetology Board Practice Exam

The primary purpose of using a shampoo is to cleanse the hair and scalp of dirt and oils. Shampoo is formulated with surfactants and detergents that effectively remove impurities, including sweat, grease, and product buildup. This cleansing function is essential for maintaining the health of the hair and scalp, as it helps to prevent issues such as clogged hair follicles or dandruff.

While other options imply additional benefits associated with hair products, they do not represent the main function of shampoo. Adding fragrance is a secondary effect, styling hold relates to hair styling products, and changing hair color pertains to hair dye, which serves entirely different purposes in hair care and aesthetics.