What part of the hair structure is damaged in permanent hair removal using an electric current?

In permanent hair removal using an electric current, the part of the hair structure that is damaged is the papilla. The papilla is a small, bulb-like structure located at the base of the hair follicle. It plays a crucial role in hair growth, as it contains blood vessels that supply nutrients to the hair bulb, where new hair cells are generated.

When the electric current is applied during a permanent hair removal procedure, it specifically targets the papilla to disrupt its function, effectively halting the growth of new hair. By damaging the papilla, the process ensures that the hair will not regrow, leading to a permanent reduction or elimination of hair in the treated area.

Understanding the role of the papilla in the hair growth cycle is important for comprehending why it is the focus of permanent hair removal methods that utilize electric currents. This approach is distinct from simply affecting other layers of the hair, such as the cuticle, which is the outermost layer, and does not play a direct role in the hair's growth mechanism.