An effective, efficient and permanent method of removing unwanted hair. Tiny needles are inserted into each hair follicle, one at a time, so the operator needs to be skilled. Once inside the follicle the needle destroys the hair root by using electricity to produce a chemical reaction. The main advantage with electrolysis is that it is usually permanent the hairs don't grow back again. The disadvantages are that it is slow, rather expensive and sometimes painful. Occasionally a skin reaction may be produced. Electrolysis is probably best reserved for the most annoying or embarrassing excess hairs - such as those on the female face.Electrolysis