Vape Juice Ingredients Explained: What's Really in Your E Liquid? Ecigator what is in vape juice Vape juice contains a long list of chemicals, many of which aren't even listed on the packaging. Testing has also shown that vapes labelled "nicotine free" can have high nicotine levels. Vaping isn't just harmless vapor. It delivers toxic and addictive chemicals into your body, which can lead to serious health problems. Talk to your teen about the harms of vaping today! Harmful Chemicals in Vapes and E Liquids You Should Avoid SMOKO E Cigarettes Researchers Seek Answers Amid Rise in Vaping Related Illness