Hair transplantation Thailand is a modern-day surgical technique that involves the removal of the hair follicle from one part of the body to the other. The part of the body in which the hair is removed from is known as the "donor site" while the part in which the hair is being transplanted is called the "recipient site". It's a type of surgery that moves the hair you already have on your body to fill a particular area with thin or no hair where the hair will even grow. Doctors have been doing hair transplants since the 1950s, but techniques have changed a lot in recent years.