Electrolysis, created in 1875 by American ophthalmologist Dr. Charles E. Michel, is a procedure for permanent hair removal. It remains the only method medically validated and approved by the FDA for this purpose. In this procedure, trained Electrologists use a fine, disposable filament or needle to enter the hair follicle's natural opening. They then apply a small electric current to destroy the hair root, effectively eliminating the growth cells of unwanted hair. Multiple electrolysis sessions are necessary to prevent any future hair growth in the treated follicle.