Even dosing across the forehead with Botox helps prevent uneven lifting and maintains a natural, balanced brow contour.

https://www.scribd.com/document/985368925/Botox-for-Under-Eye-Wrinkles-What-Works-and-What-Doesn-t-145918

Even dosing across the forehead with Botox helps prevent uneven lifting and maintains a natural, balanced brow contour.