Hair transplantation is a surgical technique that moves individual hair follicles from a part of the body called the 'donor site' to bald or balding part of the body known as the 'recipient site'. It is primarily used to treat male pattern baldness. In this minimally invasive procedure, grafts containing hair follicles that are genetically resistant to balding are transplanted to the bald scalp. It can also used to restore eyelashes. Transplant operations are performed on an outpatient basis, with injected local anesthesia, which typically last about six hours. The scalp is shampooed and then treated with an antibacterial agent prior to the donor scalp being harvested.