Allergan® 100U is a botulinum toxin type A manufactured in the United States . It is considered the gold standard neuromodulator for the treatment of dynamic wrinkles and facial muscle modulation in aesthetic medicine. MAIN INGREDIENTS : • OnabotulinumtoxinA • Human albumin • Sodium chloride MAIN BENEFITS • Reduces dynamic wrinkles (forehead, glabella, crow’s feet) • Slims the masseter muscle (jawline contouring) • Provides a subtle brow lift • Improves neck lines and contours • Treats excessive sweating (hyperhidrosis) MECHANISM OF ACTION : Botulinum toxin type A inhibits the release of acetylcholine at the neuromuscular junction, temporarily relaxing the muscles and reducing contractions that cause wrinkle formation.