Washington Esthetician State Board Practice Exam

What is the most commonly used modality in electrotherapy?

1. High-frequency current

2. Pulsed current

3. Galvanic current

4. Faradic current

The correct answer is: Galvanic current

Galvanic current is the most commonly used modality in electrotherapy primarily because it involves a continuous, unidirectional flow of electric current. This type of current is essential for various esthetic treatments as it facilitates chemical reactions within the skin, such as iontophoresis, where active ingredients are introduced transdermally by using a low-level electrical charge. Galvanic current is versatile and can address multiple skin concerns, including hydration, anti-aging, and overall skin rejuvenation. It also promotes blood circulation and lymphatic drainage, enhancing the skin's overall health and appearance. Its foundational role in electrotherapy makes it a staple among professionals in the beauty and esthetic industries. While other modalities, such as high-frequency, pulsed, and faradic currents, have particular uses and benefits, they are typically employed for more specialized treatments rather than being the primary choice in electrotherapy applications.