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. Imperial Brands and BAT find gains as Citi upgrades both UK tobacco groups to 'buy' from 'hold' LSE:IMB A handful of companies control most of the global tobacco market, and today they look very different from the cigarette giants people remember. By market value, Philip Morris International sits clearly at Imperial Brands Tobacco Reporter