Electrolysis is a type of hair removal where the device destroys the growth centre of the hair with chemical or heat energy. You can treat most parts of the body with this type of hair removal including eyebrows, face, abdomen, thighs, breasts and legs. Electrolysis works by passing a small amount of energy into each hair follicle using a very fine needle. This is to disable the follicle resulting in the hair falling out. The aim is for the hair follicle to be permanently disabled so it does not regrow.