What modality of electrology is characterized by the absence of chemical action?

The modality of electrology characterized by the absence of chemical action is thermolysis. In thermolysis, high-frequency electrical energy is used to produce heat, which destroys the hair follicle. This method relies on the physical principle of thermolysis, or heat generation, rather than any chemical reactions.

Unlike the galvanic method, which employs a direct current to cause a chemical reaction that destroys the follicle, thermolysis focuses purely on thermal effects to achieve the desired results. The blend method, which combines both galvanic and thermolysis techniques, also involves chemical action due to the galvanic component. Electrolysis, frequently used interchangeably in casual settings, more widely refers to processes involving the electrochemical destruction of hair follicles, which would not apply to thermolysis. Thus, thermolysis is singularly characterized by its reliance on heat generation without any chemical reactions.