What is the key function of microcurrent in esthetics?

Microcurrent therapy in esthetics is a versatile treatment that has multiple benefits, making the key function of microcurrent broad in scope. It is primarily known for its ability to increase muscle tone, which is achieved by stimulating the facial muscles. This stimulation helps in lifting and rejuvenating the skin, thereby contributing to a more youthful appearance.

Additionally, microcurrent can reduce inflammation. This is especially valuable in skin treatments, as it can help calm irritated skin, promote healing, and improve overall skin texture.

Furthermore, while microcurrent is not primarily focused on hair growth, it has been noted to promote better scalp health and circulation, which could indirectly support hair regrowth in some contexts.

Given the range of its applications, including muscle toning, inflammation reduction, and potential benefits for scalp and hair health, the comprehensive nature of microcurrent therapy is best captured by the option that includes all of the stated effects.