The doctor will want to see how the grafts are doing the day following the hair transplant. The patient will go in for a check-up so that any problems can be corrected quickly. If that is not possible, at least plans can be made to correct them at a future time. The doctor will have done his job with the hair transplant procedure at this point. Follicular Unit Extraction hair transplant costs more than micro-grafts. FUE may cost as much as $15 per graft. Mega-sessions in which large numbers of grafts are completed at one time are cheaper per graft. Figured into the fee is the use of highly skilled technicians to help the doctor. Repair work is also done at a per graft price. They might show you photos that they have taken using lighting tricks to make the hair look thicker and healthier than it is. It is often hard to spot such tricks, but knowing that some surgeons do them will help you to watch out for them. You will get some good advice if you go to certain associations for assistance. You should figure that the average number of hair transplant grafts needed to cover a balding area is 25% of the original hair that was there. You can move up or down from this figure according to your other factors such as thickness, curliness, or color. Then, you can use this number to figure up the grafts needed. Others have thyroid disease or other diseases that affect their hair. A certain type of alopecia results in eyebrow loss. Excessive plucking can be a problem, too. Burns, tattoos, and infections can cause the eyebrow hair to fall out, and some people just are not able to grow eyebrows at all. Hair transplant surgery for eyebrows is different because eyebrows are different from scalp hair. Certain doctors have been aware of follicular units for a long time now, but the knowledge only recently made its way into hair transplant methods. Now these ideas are being used in hair restoration every day. To understand how follicular units have affected hair transplant surgery practices, it is necessary to first understand what a follicular unit is.