Hair transplantation is a surgical procedure in which hair follicles are removed from the "donor site" on one region of the body and placed on the "receiver site," a bald or balding area. Male pattern baldness is the main condition that this method is used to address. Grafts with hair follicles from areas of the body that are genetically resistant to balding, such as the back of the head, are transferred to the bald scalp during this minimally invasive surgery. Hair transplantation can also be used to cover scars left by accidents or surgery, including facelifts and prior hair transplants, and to regrow hair on the chest, pubic area, beard, eyelashes, eyebrows, and beard. In contrast to skin grafting, hair transplantation uses grafts that almost entirely preserve the epidermis and dermis that surround the hair follicle.