10 Neurotoxin Injection for Chemical Brow Lift
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Indications
Volume loss in the forehead, combined with hyperactive corrugator, procerus, and orbicularis oculi muscles, is often responsible for brow ptosis. Vertically and obliquely oriented muscle fibers, when activated or with baseline resting muscle tension, pull down on the position of the brow relative to the upward pull of the frontalis muscle.
Anatomic Considerations
The corrugator, procerus, and lateral orbicularis oculi muscles are brow depressors. Inactivation of the depressor muscles permits the elevation of the brow by allowing the frontalis muscle to overcome their downward pull. Medial elevation is obtained by placing BoNTA in the corrugator and procerus muscles. Lateral brow lift is achieved by treating the lateral orbicularis oculi muscles. It is imperative to preserve muscle function in the forehead by not overly treating (relaxing) the frontalis muscle with BoNTA as the forehead will not be able to elevate the brow, and brow ptosis may occur.
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