Hair transplantation

Development of surgical techniques using the world’s first follicular unit hair transplantation and the implanter

Hair transplantation was first developed in the United States during the 1950s. Initially, it began with the punch method of hair planting using about a 4mm punch to extract hair from the back of the head and plant it on the grafting area where the same sized hole was made. However, the results of this method were very unnatural because the hair sprouted like bristles on a toothbrush. Therefore, this method often delivered low levels of patient satisfaction.

In order to improve the unnatural design from the punch method and the mini-grafting, Professor Jung-Chul Kim at Kyungpook National University developed a new hair transplantation method in 1992 using the world’s first follicular unit transplantation and the implanter. Follicular unit refers to the hair unit on the scalp. Hair on the scalp grows in follicular units, and each unit comprises 1-3 hairs growing from a single opening in the skin. For Asians including Koreans, 46% of hairs are single hair follicular units and 54% are 2 to 3 hair follicular units. For most Caucasians, however, hair mostly grows in 2 to 3 hair follicular units, with only 5% being single hair follicular unit.

Follicular unit transplantation provides the best results because it involves transplanting hair follicular units in a normal distribution pattern on the scalp, thereby preserving the original hair distribution. This method is ideal for all types of hair, especially for Koreans’ thick, dark, and straight hair.

Use of the KNU Implanter

Dr. Ahn uses the latest KNU Implanter for follicular unit transplantation surgery.

By using a KNU Implanter a large amount of hair can be transplanted in a short period of time. This method demonstrates high survival rates of hair after transplantation, thus it increases the satisfaction of the surgery.

The KNU Implanter is categorized into three sizes S, M, and L. The S type is used for a single hair, M for 2-hair units, and L for 3-hair units. The KNU Implanter has been patent in Korea, the United States, China and Japan.


Male Pattern Baldness


In the case of male patients, it is desirable to prepare for progression of baldness as they age. The surgery range should be decided by estimating the baldness that is expected rather than the current baldness area. Transplantation needs to be processed in between existing hairs. Dr. Ahn takes into consideration the patient’s gender, age, hair density, and distribution of hair before the surgery. Dr. Ahn also consults on design with the patient, which increases the overall satisfaction with the most natural result after the transplantation surgery.  

Male Pattern Baldness

Female Hair Loss &Hair line


 In case of correcting the hair line in women, it is necessary to take into account the density of the hair. Only the maximum transplant will give a natural effect of adding hair. Especially important is the density in front of the head the direction of the hair.To achieve a natural and beautiful hairline, it is very important to consider the angle, direction and the natural design of the hairline, suitable for the face of the patient.


Eyebrow hair loss due to scars(stigmata)


"Doctor An" treats not only hereditary alopecia and corrects the line of the hair, but also conducting the hair transplant procedure whiskers, eyebrows, hair loss due to scars.


Precautions before and after surgery


Before Surgery

1. Stop taking dietary supplements or aspirin other than for treatment purposes 1 week prior to surgery. 2. Do not cut your hair too short and if necessary, coloring of your hair should be done a week before. 3. Abstain from alcohol 24 hours prior to surgery and get a full night’s sleep before surgery. 4. Advise your physician in advance if you are under any medication or allergic to certain drugs.


On The Day of Surgery

1. Have a light meal on the day of surgery, and drugs for treatment purpose can be taken. 2. Please wear a comfortable shirt with a wide neck. 3. Bring a loose cap that you can wear after surgery. 4. On the day of surgery, shampoo the hair until it is clean and do not use hair products.


After Surgery

1. It is important for recovery to take enough rest on the day of surgery and the next day. 2. Come back to the hospital 1~2 days after surgery and receive treatment of the donor area and for shampooing. 3. You can wash your hair by yourself 3 days after surgery. Shampoo your hair under light water pressure on the transplanted area, lightly lather foam on and rinse. 4. Ten days after surgery, you can remove the stitches of the donor area and go back to your normal lifestyle.


Progress after Surgery

Please be careful with the transplanted hairs for 10 days after surgery. 2. Lightly tap the area when the transplanted area is itchy rather than scratching it until the stitches are removed. 3. The collected area and transplanted area may become numb or sensitive but it will fade away as time goes by. 4. It is normal for 70 to 80% of the transplanted hairs to come out after two to four weeks. New hair will grow out from these roots around four months later.