Hair transplantation is a cosmetic procedure, which involves removal of permanent hair shafts along with roots (also referred as follicular units) from a hair bearing area called as “donor area” and transplantation into the bald area called as “recipient area”. In case of hair transplantation over scalp, hair are usually taken from the back and sides of the scalp. For patients with advanced baldness of scalp, hair can also be taken from beard, chest, axilla, and / or other body parts.
The basic concept of hair transplantation is based on the principle of “donor dominance.” Donor dominance implies that the hair will retain its properties even when moved to a new area. For the purpose of understanding, scalp can be divided into two separate areas. The area in the front, middle part of scalp and crown is susceptible to balding whereas the area at the back and sides of the scalp is not. Hair transplant thus involves transfer of permanent hair present at the back and sides of the scalp to the areas of balding.
Apart from androgenetic alopecia which is the most common indication for hair transplants in males, hair transplants can also be done in cases of female pattern hair loss, over beard, for moustaches, eyebrows, and for various other causes of scarring hair loss.