Subcutaneous fat in the area behind the ear is rich in stem cells and characterized by high tissue uniformity. Compared to subcutaneous fat in the abdomen or thigh, the volume of fat droplets is smaller, maintaining an environment conducive to stem cell growth. Therefore, adipose tissue collected from the area 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 scars are less likely to remain, which reduces the psychological burden on patients.