fig12
![A review of nonsurgical facial rejuvenation](https://image.oaes.cc/f2686891-8426-44dd-b75b-1c7d26af1c13/3813.fig.12.jpg)
Figure 12. Upper face muscle pull on eyebrow. An illustration of the direction that each upper facial muscle pulls on the eyebrow, showing the medial glabellar muscles exerting a downward force, the frontalis exerting an upward force, and the orbicularis oculi exerting a downward force