Which one of the following is recognized as a PERMANENT method of hair removal?

Electrolysis is recognized as a permanent method of hair removal because it involves the use of an electric current to destroy the hair follicle. This process targets and eliminates the root of the hair during its growth cycle, which can lead to permanent results when performed correctly. Because it directly affects the follicle, it prevents future hair growth.

In contrast, other methods listed have different properties. Laser treatment, for instance, reduces hair growth but may not completely eliminate it permanently for all skin and hair types. Waxing, while effective for temporary hair removal, simply pulls hair from the follicle without damaging it, allowing for regrowth. Electrical epilation is a term that generally encompasses methods that may or may not guarantee permanent results depending on the technique used. Therefore, electrolysis stands out as the most reliable and recognized permanent method for hair removal among the choices provided.