Thermolysis uses which type of current?

• A. High frequency alternating current
• B. Direct current
• C. Low frequency direct current
• D. Pulsed direct current

Answer: (A)

Thermolysis relies on high-frequency alternating current to generate rapid, localized heating in the hair follicle. When the tiny electrode sits in the follicle, the tissue’s resistance converts the electrical energy into heat as the current rapidly reverses direction. This heating coagulates and destroys the follicle with precise control, while the high frequency minimizes electrochemical reactions in surrounding tissue and reduces damage to nearby structures. If direct current were used, the process would be electrochemical rather than thermal, producing different byproducts and slower, less controlled destruction. Low-frequency or pulsed direct current wouldn’t provide the same targeted, rapid heating, so they’re not the standard for thermolysis.