Some of the available cells go through several stages before ending in cell death in a very short time. These cells would not be adequate for use with hair transplant surgery. There seem to be other cells which last longer and would work for this application. A scientist named Dr. Gho has done some work and acquired a Dutch patent on his work with hair multiplication. To understand how follicular units have affected hair transplant surgery practices, it is necessary to first understand what a follicular unit is. A follicular unit is a single entity that is made up of several parts. All these parts are necessary to the whole. The first part, and the one most people getting hair transplant surgery are interested in, is the hairs. It can keep you from eating or sleeping properly. Doctors have medications they can prescribe to help with this. 8. Infections. Infections are rare with hair transplant surgery, but they can happen. One reason they do not happen more is that antibiotics are given before and after the procedure to prevent infections from even starting. The injections of the local anesthetic into the scalp before hair transplant procedures are definitely painful to some degree. Anyone who has had a tooth pulled knows that, if the tooth is deadened properly, it is not the tooth-pulling that hurts. It is the needle going in with medication to numb the tooth that is the real agony. Rather than growing in groups of one to four hairs, they are simply single strands of hair. You can see this if you look carefully in the mirror at your eyebrows. Hair transplant methods have to take this fact into account. When doctors do hair transplant surgery to replace eyebrows, they have to make sure that they put the hairs in so that they will point in the natural hair direction. People looked like they had doll's heads, with hair sticking out of their hair in clumps. Now hair transplants are more natural looking because of a procedure called micro grafting. Most hair transplant surgeries today involve micro grafting to some degree. Micro grafts hold about three or four hair follicles.