Which of the following activities does NOT constitute the practice of cosmetology?

Applying makeup in a department store is considered a retail activity rather than a practice of cosmetology within the legal definitions often outlined in state regulations. Cosmetology typically involves licensed activities performed by trained professionals in a salon setting, such as hair cutting and styling, skin treatments, and nail services. In contrast, makeup application in a retail environment typically does not require a cosmetology license because it is not performed as part of a service establishment; it is often seen as a product demonstration or enhancement rather than a professional cosmetic service.

The other choices—doing a facial treatment, operating a hair salon, and providing manicures and pedicures—are all activities that fall under the practice of cosmetology and usually require appropriate licensing, as they involve the application of specialized skills and techniques to alter the appearance of the hair, skin, and nails in a professional capacity.