New vapers who have been using e-cigs for a while might have noticed that different e-liquids are marked with various ratios. These usually show up on labels as 50/50 PG/VG, 40/60 PG/VG, or whatever ratios are there for propylene glycol and vegetable glycerine. Some might even be labeled as having Max VG or 100% VG.
For the uninitiated, the question in their minds is, “What’s the difference between Max VG and 100% VG?”
100% VG or Max VG?
There are some who think “Max VG” means 100% VG content. This is a common misconception. The truth is; it is usually a blend that has at least 70% VG in it. It depends on the manufacturer – some may contain 80% or 90%, but “Max VG” never means 100%.
Understand that this is often the case because flavorings and nicotine are usually in a PG-base liquid. So even if the base liquid is purely VG, adding the PG-based flavor and nicotine will not make it 100% VG.
When an e-liquid says 100% VG, that is when all the parts in it use VG-based liquid, including the flavorings and nicotine.
Many users prefer VG-dominant blends because it can produce more clouds of vapor than PG. Inhaling massive clouds of vapor tend to give users a much more pleasurable vaping experience. It fills the mouth with flavor, and when exhaled, gives a very satisfying plume. It also has a slightly sweet taste, enhancing the flavors of fruity and dessert flavors.
Another reason is that some users have an allergy to PG. Allergic reactions can range from shortness of breath to getting hives. Depending on the severity of the allergy, some might be fine with 80% VG, but others might only be able to use 100% VG.
While PG is still a safe, food-grade substance, it is still mostly chemical in nature. VG, on the other hand, comes from vegetables, thus is a lot more organic. This is another reason users favor VG e-liquids over PG-based ones. PG does give a more pronounced throat hit, but if one takes long, slow inhales with VG, a similar effect can be reproduced.
Users who have allergies to food, have asthma, or have trouble breathing should opt for 100% VG e-liquids. Some might not have adverse reactions to max VG blends, but if one wants to minimize the risk of certain allergic reactions, going pure VG is better.
In the end, it all comes down to personal experience. Try all the blends you wish and monitor the reactions you get. Be aware that sometimes, an allergic reaction may not be caused by PG but by the sub-standard quality of the flavoring or nicotine. Buy only high-quality e-liquid to be sure, and avoid any of the cheap, foreign-made e-juice.