What process is employed by the galvanic modality for permanent hair removal?

The galvanic modality for permanent hair removal works through a process known as electrolysis, where a direct current is applied to the hair follicle through a fine needle. This current produces a chemical reaction that generates lye (sodium hydroxide) within the hair follicle. This chemical reaction effectively destroys the hair bulb and tissue surrounding the follicle, thus preventing future hair growth.

In the context of the chosen answer, over-treatment refers to the technique of ensuring that the current is applied effectively enough to achieve the desired destruction of the hair structure. However, shallow insertion is not typically a goal in this context, as the needle must reach the appropriate depth within the follicle to ensure proper treatment. The correct approach involves careful insertion depth and management of treatment intensity to achieve effective hair removal while minimizing discomfort or injury to the surrounding skin.

Overall, the galvanic modality's focus is on utilizing the electrical and chemical interactions within the follicle for permanent results, distinguishing it from surface extraction or the use of topical depilatories that do not offer lasting efficacy in hair removal.