Adjunct professor at Sungkyunkwan University College of Medicine MERZ KOREA Advisors Ulthera, Zeomin, Belotero, Radius Hugel Pharma Advisory Blue Roseforte, The Chaeum, Regenbogen Holdings Counsels Silk Heart, Omega, Steigen Thread Lifting Estepharm Counsels Cure Skin (fibroblast), QT Lift, Esthedix Counsels VOV Thread Lift LG Chem Counsels Yvevar, Y-solution Chong Kun Dang Counsels Style Age Filler, Ultra Smartlux Pharma Research Product Advisory Juran Ri, KleviL Advisory