What type of current is NOT applied directly to the surface of the skin in treatment?

High Frequency Current is not applied directly to the surface of the skin in treatment. Instead, it is typically used in a way that creates an indirect effect, often delivered through a glass electrode and is held slightly above the skin or applied during a facial treatment to create a therapeutic effect. This minimizes direct contact and allows for a more effective treatment that can address issues such as acne, aging, and overall skin health while also preventing any undue irritation.

In contrast, Direct Current, Galvanic Current, and Microcurrent are all types of currents that can be applied directly to the skin for specific therapeutic effects. Direct Current involves a constant flow of electricity that can energize cells, while Galvanic Current uses a chemical process through direct contact to drive product ingredients deeper into the skin. Microcurrent, often referred to as a "facial massage," utilizes low-level electrical currents to stimulate facial muscles and promote a youthful appearance by impacting the underlying tissue directly.