Where is the permanent zone of hair that lasts a lifetime? (photo)

This photo clearly shows the location of the permanent zone of hair.  Many men, when they get older and have Class 7 patterns of balding, will develop balding above and below this permanent zone which usually measures 2 1/2 – 3 inches high. As you can see, the neck hair is being lost and this man will eventually have no neck hair. This is why a surgeon should never use neck hair for a donor source and should not take hair from the fringe areas in the Class 6 pattern patients where the hair may be lost over time as the hair loss moves down the scalp. So this man had too many grafts taken and some of it was taken from areas that are not permanent hair so that he will lose some of the transplanted hair earlier than he would like to see it go.