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Why is Propylene Glycol used in E liquid?

Why is Propylene Glycol used in e – liquid?

One of the main reasons that propylene glycol is added to e liquid is that liquid nicotine and flavorings alone produce no visible vapor. The production of vapor is important for two reasons. Firstly, it acts as a vehicle for delivering nicotine into the lungs and secondly, because vapors enjoy the feeling of inhaling and exhaling something that visually resembles cigarette smoke. So, to ensure a satisfying cloud of vapor, propylene glycol (PG) or vegetable glycerine (VG), both virtually odorless and colorless syrupy liquids, are added to the mix. Do note that despite scaremongering by individuals that don't know the facts, PG is not the same formulation as a similar-sounding product used to make radiator fluid or car anti-freeze - in fact it's widely used all over the world, everyday.