Facial treatments（2-104） Estheticians should study and have a thorough understanding of facial treatments because this is a foundational skill for all skin care services and you must be able to provide services that are safe healthy and beneficial for your clients. Facial massage（3-104） Massage is a very relaxing part of the facial that keeps clients coming back. Facial machines（4-104） Estheticians should study and have a thorough understanding of facial machines so that they can operate the machines safely, provide the best results for their clients, and enhance their service menu.

Estheticians should study and have a thorough understanding of advanced topics and treatments so they can better serve their clients while increasing their service revenues and menus. Advanced treatments have expanded the esthetician's repertoire to include more results-driven services such as chemical exfoliation and microdermabrasion.

Estheticians should have a thorough understanding of makeup because makeup skills and knowledge add another element of expertise to enhance your reputation, grow your clientele, and increase menu services and revenues.