Revance Reports Positive Efficacy and Duration Results from Phase 2 Upper Facial Lines Study Revance Reports Positive Efficacy and Duration Results from Phase 2 Upper Facial Lines Study Revance Therapeutics, Inc. (Nasdaq: RVNC), a biotechnology company focused on innovative aesthetic and therapeutic offerings, today announced positive topline efficacy and safety results from its Phase 2 multicenter, open-label study of investigational drug candidate DaxibotulinumtoxinA for Injection for the combined treatment of upper facial lines, which are comprised of glabellar (frown) lines (GL), dynamic...