Subcutaneous fat behind the ear is rich in stem cells and is characterized by its high tissue uniformity. Compared to subcutaneous fat in the abdomen or thighs, the volume of fat droplets is smaller, and an environment conducive to stem cell growth is maintained. Therefore, adipose tissue harvested from behind the ear is considered superior in both the "number" and "quality" of stem cells obtained.
In addition, the area behind the ear is less noticeable, and scarring is less likely, which reduces the psychological burden on the patient.