The 5th Japan-ASEAN Medical Seminar entitled “Mercury Exposure and Health Problems: Using Illegal Skin-Lightening Cosmetic Products” was held as an online Zoom Webinar for the lecture entitled “Mercury Exposure from Illegal Skin-Lightening Cosmetic Products in ASEAN Countries and Related Health Problems” by Dr. Hasriwiani Habo Abbas, Faculty of Public Health, Universitas Muslim Indonesia (UMI) on 29th May 2021.