The celebrity hair loss doctor is among the most modern and cutting-edge hair transplant methods. The Choi Pen is a device used to implant donor hair follicles into the scalp in order to treat baldness. It has a hollow needle, a tube, and a plunger, and it resembles a pen. The thickness of this needle ranges from approximately half a millimetre to around one and a half millimetres. Thanks to the Choi Pen's accuracy, you'll look totally natural, too. Over…

