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. For one thing, the hair has a distinct growth pattern with each section of the eyebrow pointing in a different direction. The hair transplant surgery will likely cause some bleeding. If you put pressure on the area, the bleeding will usually stop. In rare situations, the bleeding does not stop this way. In that case, it might be necessary for the surgeon to do some extra stitching to close the wounds. 3. Pain. There is actually very little pain with hair transplant surgery. Certain surgeons and clinics underestimate the number of procedures necessary to achieve the desired effect. This leads people to have a false hope of having a full head of hair in a very short time. When this does not happen, they are understandably angry. They did not get what they were promised. 2. The end result is an increase in the number of hairs available for hair transplant. Not only is hair cloning possible, it has been proven in many scientific studies. Recently one group of researchers did a culture whereby they multiplied the number of dermal papilla cells. With this being possible, hair cloning is a single step away. Men with this pattern of balding will have donor hair that survives the hair transplant process and flourishes long afterward. That is because a naturally-occurring enzyme in the body combines with testosterone to create a chemical called DHT. This chemical is responsible for the hair loss on the tops of men's heads when they have male pattern baldness. However, there are other surgeries that can be used in conjunction with hair transplant to achieve similar results. 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.