When is 1 Hair Transplant not enough?

This Patient got the better part of his hair back

With only ONE level 12 procedure, this patient restored his hairline all the way back to his mid scalp. Since there wasn’t enough hair to do the crown, the surgeon artistically created the illusion that the hair in the front had always been there and only the crown was thinning.  Some patients have enough hair to cover the whole area and others do not.  Is one hair transplant enough?  That’s up to each individual.