Propylene glycol – why is it used in e-liquid?
When used alone, the nicotine and flavourings in e liquid produce no visible vapour. However, when propylene glycol (PG), a slightly sweet, colourless, viscous liquid is added to the e liquid recipe, a satisfying plume of vapour is the result. When inhaled and exhaled, this vapour not only provides a similar physical sensation to that of inhaling tobacco smoke, it delivers the all-important fix of nicotine to the body via the lungs too. Propylene glycol in other products BP or USP* approved propylene glycol is used in cosmetics, toiletries, food colourings, cake mixes, salad dressings, soft drinks and more. It’s also used in the smoke/fog machines found in theatres and nightclubs.
