What is the primary characteristic of a galvanic current?

The primary characteristic of galvanic current is that it is a continuous electric flow. This type of current is unidirectional, meaning it flows in one direction only. This characteristic allows it to effectively facilitate various electrotherapy treatments, such as iontophoresis, where ions need a constant flow to penetrate the skin effectively. In contrast, high-frequency currents alternate direction rapidly, varying intensity currents exhibit fluctuations in strength, and currents used for heat generation are not specifically defined as galvanic. Understanding that galvanic current maintains a steady flow is essential for applying it effectively in esthetic practices.