Vape Juice Ingredients Guide Freeman Vape Vape Juice Ingredients: Avoid Harmful Additives VapeDeal.com What's in an e liquid or vape juice? The main ingredients are propylene glycol (PG) and vegetable glycerine (VG). These are solvents that are basically used to dissolve and carry the other ingredients. Nicotine, propylene glycol, sweet flavorings, and various toxic chemicals like carcinogens and heavy metals are found in vape juice, posing health risks, especially to youth. This is what you're actually inhaling when you vape. (Hint: It's not water vapor.) About