The procedure involves using a special type of hair transplant known as a transection of the scalp, which involves cutting off the outer layer of hair and then attaching a section of the remaining hair back to replace the missing layer.
If the transplant is successful, the patient’s scalp will regain a healthy layer of skin.
If not, however, the scalp will still be covered in a thick layer of scar tissue.
In order to apply the hair transplant, the doctor inserts a scalpel into the affected area, and then cuts a small incision in the hair.
Then, the scalpel is pushed inwards, through the scalp to the base of the head and the patient is able to hold the scalped head in place with a sling.
A transect procedure can take up to two hours to complete, according to the World Health Organisation.
The patient must have sufficient mobility to stand up, lie down and bend their neck.
The procedure is often performed by a trained medical practitioner.