This article provides an in-depth look at the legal situation surrounding vaping in Japan. Vaping is not currently regulated under any specific law or regulation, but the Japanese Ministry of Health, Labour and Welfare has issued a guidance document which outlines their position on the issue. It is legal for those aged 20 and over to purchase and use vaping products, however it is advised against using them in public places due to potential health risks associated with second-hand smoke exposure. Bringing a personal vaporizer into Japan is allowed as long as it complies with customs regulations, and there are alternative nicotine delivery methods such as nicotine patches and herbal remedies available.