Subcutaneous fat in the back of 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 harvested from the back of the ear is considered superior in both the number and quality of stem cells obtained.
In addition, the back of the ear is a less noticeable area, and scarring is less likely to occur, reducing the psychological burden on patients.