If the hair grafts are taken exclusively from the donor area (permanent zone), they will ?have hair that is resistant to males hormones. The wreath of hair around the side and back of the head, is permanent on 99+% of men no matter what they have inherited from the ancestors, these hair will last their lifetime. Although this is the written rule, occasionally we see some patients that may lose their transplanted hair and if they do it may result from: (1) miniaturized hairs in the donor area (often called DUPA or Unpatterned Alopecia), aging of the donor area (seen in men over 50-70 years old a condition that unfortunately bares the name ‘senile’ alopecia, in many women whose hair around the side and back of the head is susceptible to female genetic balding and for other unknown causes we doctors call the ‘X’ face, which means we don’t know.
When strip surgery is performed and it strip incision is placed in the lower border of this permanent zone, these hairs will be lifetime hairs. If however, a doctor pushes the number of harvested grafts and extends outside of the permanent zone to push up revenue as they charge per grafts which are worth more to the doctor, these hairs may not be permanent.