As you can see, there is whole new world of flavour for you to explore. But it is important to understand base liquids before you start choosing your juice. These are simply the liquids to which flavouring and nicotine are added to create great vapes. Base liquids feature a combination of propylene glycol (PG) and vegetable glycerine (VG) and the proportion of each varies from one eliquid to another. Most product listings and packaging will feature the details of the base liquid. These will say something like 80PG/20VG which simply means that the base is 80% propylene glycol and 20% vegetable glycerine. Simples!
The base liquid ratio is important because it will dictate the nature of the vaping experience and, in some cases, the type of device that the juice is compatible with. here’s the lowdown on PG and VG.
Propylene glycol is a colourless, odourless synthetic organic compound which is found in many everyday consumable products. Research has thus far shown PG to be safe to both ingest and to inhale. Volatile compounds which contain PG have been associated with respiratory disorders but it is the glycol ethers in these compounds which are almost certainly the problem and not the PG. It should be noted that PG can adversely affect the immune systems of cats so you should be take care not to vape around felines!
PG can be an irritant to the throat and eliquids high in PG can cause you to experience a dry mouth and increased thirst. These symptoms usually ease as your body acclimatises to vaping. The advantage of PG is that it delivers a great throat hit and carries flavour well. if you are trying to quit smoking, you may find that it is high PG juice which best suits your needs. Eliquids which are high in PG are suitable for all devices.
VG is a benign substance derived from vegetable oils. Adverse reactions to VG are extremely rare and so high VG juice is a good choice for vapers who have had issues with PG. VG is also the right choice for vegetarians as the manufacture of PG can involve animal products.
VG delivers a smoother throat hit than PG and superior vapour clouds but its naturally sweet taste means that it does not carry flavour quite as well as PG. Vegetable glycerine is also thicker than PG which means that it can reduce the life of atomisers because the coils become clogged. The small coils of clearomizers are particularly prone to this issue. Sub-ohm (low resistance) tanks cope well with high VG juice but these devices are only suitable for experienced vapers. High VG eliquids tend to feature lower nicotine strengths and so may not appeal to those who have recently quit smoking.