What is the modality used for permanent hair removal that produces heat called?

The modality used for permanent hair removal that produces heat is known as thermolysis. This technique employs a high-frequency current to generate heat within the hair follicle, effectively destroying the follicle's ability to regrow hair. Thermolysis works by applying this heat directly to the tissue surrounding the hair, which causes it to coagulate, resulting in permanent hair removal.

This method is often utilized in electrolysis, where it can be particularly effective for finer hair. The ability to quickly treat hairs with heat makes thermolysis a popular choice among electrologists. It differs from other methods of hair removal, such as electrocoagulation, which focuses more on destroying tissue rather than specifically targeting hair follicles.

Meanwhile, photoepilation relies on light to remove hair, and chemical epilation uses substances to break down hair structure chemically, making them distinct from the heat-based approach of thermolysis. Understanding these differences helps clarify why thermolysis is an essential concept in the study of permanent hair removal techniques.