What is one benefit of using a microcurrent facial machine?

Using a microcurrent facial machine primarily benefits the toning and tightening of facial muscles. Microcurrent therapy works by delivering low-level electrical currents to the facial tissues. This process stimulates the underlying facial muscles, similar to how exercise works for the body. As a result, it can enhance muscle definition, improve skin elasticity, and provide a lifting effect to the face, which contributes to a more youthful appearance.

While the other options mention beneficial effects such as exfoliation (removing dead skin cells), brightening of the skin, and hydration, these are not the primary functions of microcurrent technology. The focus on muscle toning and tightening makes this option the most relevant to what microcurrent machines are specifically designed to achieve.