Prof. Tsai is a dermatologist and dermatologic surgeon for 35 years in Taiwan. He is the first president of Taiwan society for dermatological and aesthetic surgery. He also served as executive director of Taiwanese Dermatological Association ,associate editor of Jounal of cosmetic dermatology, contributing editor of Dermatologic Surgery, consulting editor of Dermatologica Sinica and editor of Chinese Joural of Dermatology.