Altering brow contour with botulinum toxin.

Brow position is determined by a dynamic interaction between depressor and elevator muscles. Botulinum toxin may be used to temporarily alter this equilibrium to result in a change in brow position. Knowledge of the anatomy of the brow depressors and elevators allows selective treatment of these muscles to effect a change in contour to elevate or depress a specific part of the brow. Botulinum toxin browlifting may result in an aesthetically pleasing, modest brow elevation; however, individuals who have significant brow ptosis would be better treated surgically.