You might wonder, if that is the case, why more women do not have hair transplant surgery. You may be surprised to know that many women are not good candidates. Women usually have a different type of hair loss than men. Male pattern baldness uncovers parts of the top of the head. However, the sides and back of the head are usually covered with healthy balding-resistant hair follicles. Treatment can often last one to two years. Mega-sessions where thousands of grafts are done in one sitting help to shorten the overall time. However, the length of these sessions is often grueling. 5. Hair transplant surgery may be combined with other procedures. If you do not have enough hair, you cannot have a normal hair transplant surgery. When your hair transplant is done, the surgeon will be able to use fewer hair follicles per graft if your hair is coarse. That is because coarse hair provides more coverage. However, finer hair will tend to look more natural, if thinner. 5. Straight hair does not cover scalp like curly hair does. If you have straight hair, you can be sure that your hair transplant surgery will be a challenge to your doctor. In most cases, the old scar is removed at the same time. When the wound is stitched up, the entire area of both the old scar and the new cut are sewn into one line. If multiple surgeries are done, this procedure is used every time. Hair transplant surgery leaves scars. That much is certain. If you are one of the unlucky few who scar easily, you might have scars big enough that you have to hide them. 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. No special scalp treatment will be needed. Do not worry about any scraggly hair on top of your head. The doctor will blend it in with the grafts as he goes. It may seem odd, but once the grafted hairs are set, they are just as strong as the rest of your hair. You can cut them, comb and brush them, and even dye them in time.