However, it does not affect the back and sides of their hair in most cases. These areas have healthy hair follicles and make excellent donor sites for hair transplant surgery. These are called stable sites because they remain unchanged over time rather than shrinking like the hair follicles affected by DHT do. Hair transplant procedures have changed in the decades since they were first done. The earlier methods of using hair plugs were not satisfactory. 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. More research needs to be done to find out which hair cells can be used for hair cloning and then hair transplant procedures. 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. If your plugs are smaller, he may just want to add some new donor hair to lessen the effect of the doll head look. If cost is an issue with you, discuss it with your surgeon. Cost is a very real problem for many who want to have bad hair transplants fixed. It may be more expensive to do the correction than an original surgery would cost. The most important thing to remember is that you need hair for the hair transplant to your balding areas. The hair has to come from somewhere on your body. Wherever you take the hair from is called the donor site. There can be different donor sites for different people. The most common donor site for hair transplant surgery is on the head. The doctor will discuss where your hair transplant procedure will take place. She may even have a nurse or helper give you a tour of the facility. It will most likely be a doctor's clinic or an outpatient surgery center. You will be made to feel as comfortable as possible. Unless you are one of a very tiny group, you will not have to stay in the hospital overnight.