The method involves inserting a needle into each individual follicle, then applying an electric current, which destroys the follicle. Electrolysis can cause infection or scarring, and to be successful, multiple treatments are required. Everyone tolerates pain differently, but electrolysis is generally more painful than laser hair removal. Lasers emit a beam of light, which is absorbed by the pigment found in the hair shaft and follicle. This disables the follicle without heating the skin.
Some people report that the laser procedure causes only a tingling sensation.
Other people require a topical numbing ointment. The cost of laser hair removal and electrolysis depends on the size of the body areas to be treated. Lasers may seem less expensive than electrolysis, but the laser won't permanently de-fuzz you. Electrolysis can take a year or more of costly, weekly treatments, but once you're done, you're done.