Patient-Reported Aesthetic Outcomes of Botulinum Toxin Type A: A Systematic Review and Meta-Analysis of Placebo-Controlled Randomized Trials.
Botulinum toxin type A (BoNT-A) is widely used for facial rejuvenation, but patient-perceived benefit is best evaluated against an inert control. This systematic review assessed whether BoNT-A, compared with placebo, vehicle, or saline placebo, improves aesthetic self-perception and related patient-reported outcomes. P...