The single-needle, high-frequency approach is commonly called which of the following?

• A. Thermolysis
• B. Galvanic electrolysis
• C. Blend method
• D. Photoepilation

Answer: (A)

Thermolysis uses a high-frequency alternating current applied through a single needle to heat the hair follicle at the needle tip. This rapid heating coagulates the follicle’s tissue and destroys the papilla, effectively stopping regrowth. The energy is highly localized and delivered in short bursts, making the method fast and widely effective for many hair types. The other options don’t fit this description: galvanic electrolysis relies on a direct current to create a chemical reaction (lye) inside the follicle; the blend method uses both heat and chemical effects; photoepilation uses light energy to damage the follicle rather than relying on electrolysis.