The Impact of Botulinum Toxin on Brow Height and Morphology: A Randomized Controlled Trial

The purpose of this study is to describe three safe and reproducible techniques for brow lifting using botulinum toxin. It will also describe the effect of 2 techniques on the eyebrow shape using quantitative, objective measurements and satisfaction scales.

Inclusion Criteria:

• Consecutive 30 female patients presenting to our clinic for brow lifting with botulinum toxin will be randomized to receive one of the two injection techniques

Exclusion Criteria:

• Patients with previous periorbital/forehead surgery
• Patients who plucked the upper eyebrow margin
• Patients with eyebrow tatoos
• Patients with upper face botulinum toxin injection in the past 12 months
• Patients with resorbable upper face fillers injection in the past 12 months
• Patients with previous permanent upper face fillers injection
• Pregnant patients
• Lactating patients
• Patients with preexisting neuromuscular conditions (myasthenia gravis, Eaton Lambert syndrome)
• Patients using medication that could potentiate the effect of botulinum (ex: aminoglycoside antibiotics)
• Patients with sensitivity to botulinum toxin or human albumin