Which facial treatment uses an electrode to promote decongestion of the skin?

The correct choice is based on the principles of indirect high frequency treatments, which utilize an electrode to stimulate and promote decongestion of the skin. This method generates a low-level frequency that can enhance blood flow and lymphatic drainage, which helps in reducing puffiness and congestion in the skin.

During an indirect high frequency treatment, a glass electrode filled with inert gas is used, creating a gentle current that is transferred to the client via a client’s hand or an electrode held in the therapist's hand. This process not only helps to invigorate the skin but also can aid in the dislodging of impurities and excess fluids, making it particularly effective for congested or oily skin types.

While galvanic treatment also uses electrodes, its primary purpose is different; it typically focuses on infusing products into the skin rather than specifically targeting decongestion. Microdermabrasion is a mechanical exfoliation technique and does not utilize electrodes in the same way. Ultrasound therapy employs sound waves for deeper penetration of products but does not focus on the decongestion aspect like indirect high frequency does.

Thus, the interaction of the electrode and the current in indirect high frequency is uniquely suited to promoting decongestion in the skin, distinguishing it from the other treatments