Which type of electrical current is commonly used in high-frequency machines?

High-frequency machines typically use single or multi-wave alternating current. This type of current is characterized by its ability to alternate directions, enabling the efficient production of heat and therapeutic effects when employed in facial treatments. The alternating nature allows for the stimulation of tissue, promoting circulation, and enhancing product absorption, which are key benefits during facial procedures.

Using single or multi-wave alternating current also contributes to the unique oscillation properties of high-frequency machines, which is crucial for creating thermal effects and generating ozone. This ozone is beneficial for its antibacterial properties, making it particularly effective for treating acne and skin imperfections.

In contrast, direct current is unidirectional and does not possess the same therapeutic qualities associated with high-frequency treatments. Sine wave current, while suitable for various applications, is not specifically designed for the unique oscillation necessary in high-frequency facials. Static current, on the other hand, does not have the needed dynamic properties for effective facial treatments performed with high-frequency machines. Thus, single or multi-wave alternating current is the ideal choice for achieving the desired results in facial therapy with high-frequency devices.