Sometimes due to age or hormonal factors you may start getting a couple of gray hair on your face or hands or any other body part. While laser hair removal is the preferred method for permanent hair reduction, it does not work on gray hair. Electrolysis is one of the only treatments that can work to permanently reduce growth of gray hair. The process works with an epilator device and releases shortwave radio frequencies in hair follicles to stop new hair from growing. This damages your hair follicles to prevent growth and causes existing hairs to fall out.