Which practice is included under the scope of cosmetology?

The practice of shampooing and coloring a person's hair falls squarely under the scope of cosmetology. Cosmetology encompasses a range of beauty practices, particularly those that are focused on hair care and styling. This includes not only basic hair washing but also more advanced services like coloring, which requires specialized knowledge of various hair dyes and their chemical interactions.

Hair coloring is a significant service within a salon's offerings, requiring training in color theory, techniques for application, and understanding the hair's structure to achieve the desired results while maintaining hair health. Therefore, it is clearly part of the professional services that licensed cosmetologists provide.

In contrast, other practices such as the use of chemical peels and performing facials are generally categorized under esthetics, which may not be performed by those solely licensed in cosmetology without additional training or certification. Hair braiding and threading may also fall outside the traditional scope of cosmetology depending on state regulations, as these practices can sometimes require separate licensing or certification.