Which of the following should NOT require gloves during a treatment?

In the context of esthetic treatments, the use of gloves is primarily associated with procedures that involve direct contact with bodily fluids or tissues, such as during extractions or procedures that involve broken skin. Indirect High Frequency treatments, which typically entail the use of a glass electrode to deliver high-frequency electrical currents to the skin without direct contact, do not pose a risk of contamination in the same way that the other listed treatments do.

Therefore, while it is standard practice to wear gloves during procedures such as Advanced Extractions, which involve manual removal of impurities and could potentially expose the practitioner to blood or other fluids, or during Electrical Facials and Galvanic Treatments that may involve more invasive techniques or the use of conductive gels directly applied to the skin, the Indirect High Frequency treatment remains low-risk in terms of cross-contamination. Thus, gloves are not required for this specific treatment, making it the appropriate choice for the question.