The hairline is a personalized anatomical line. It is determined according to the natural hair border from the area where the forehead tissue ends and the hair tissue begins. The most important point in hair transplantation is to pay attention to the forehead muscle. The hairline can be adjusted as desired without going down to the forehead muscle and without damaging the mimic muscles. In people with a wide forehead or very empty hair on both sides, the hairline can be changed without touching the forehead line. The desired shape can be made according to the patient’s face type, hairstyle, previous hair loss pattern and the condition of the forehead muscle and balding skin.