... are all manufactured in our own factory where they are subject to strict regulation and internal quality control. Our flavor cartridges meet high quality standards and are guaranteed to only contain the 4 ingredients listed above. A complete laboratory analysis and listing of ingredients is available upon request. And when it comes to human trials…SmokeStik employees all use our own product! Propylene Glycol – Is it Safe? Propylene glycol is the most mysterious of the e cig ingredients. Its main use is to dilute the pure nicotine so that it is safe to inhale the vapor, but it’s also the reason that the vapor you inhale is so realistic and emulates the feeling of smoking tobacco. There are often comments made that prop glycol is used for de-icer and anti-freeze, but that type of propylene glycol is called “industrial grade” and it is not used in electronic cigarettes. It would be dangerous and unpleasant to inhale the industrial grade stuff ...

