The sides and back of their hair tends to thin just as the front and top of the head do. The DHT affects all the areas of their hair. Any hair follicles that are affected by DHT will simply fall out if they are moved by hair transplant procedures. Moving them from one place to another does not affect the basic nature of the hair follicle. The difference is that these procedures are generally more painful. 6. The grafts may not survive. Few surgeons will divulge to you the fact that hair grafts do not always survive after hair transplant surgery. The hope is that only a few will be lost and the overall result will not suffer. The reality is that is what usually happens. If you have straight hair, you can be sure that your hair transplant surgery will be a challenge to your doctor. Curly hair appears to provide even more coverage than it actually does because it stands up from the head. 6. The way your hair color compares to your skin color will have an effect on the look of your hair transplant. They also want to see it work better for the types of people who have hair transplants today. One area of research is hair cloning. Hair cloning promises to be a revolutionary procedure that would give people with little hair a chance to have hair transplant surgeries. It would do this by multiplying the hair a patient already has rather than using up the good hair that still exists on the patient's head. Based on the fact that the average Caucasian male has a density of 2 hairs per millimeter, it can be assumed that the average density of hair is 1250 hairs per square inch. Figuring at an average of 2 hairs per follicular unit, it would take 625 follicular units per square inch. To get 25% of that, you would need 156 follicular units per square inch. If the hair restoration is started early enough, the young patient need never feel the stigma of being bald for very long at all. A doctor who is skilled in doing hair transplant procedures on young people will do some investigation before tackling such a project. He will ask to see members of the family to assess their hair loss and how the young person might inherit hair loss traits from the family.