PG VS VG: What's The Difference? - Vapox | Vape Shop Online UK


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PG VS VG: What’s the Difference?

December 23, 2020 5 min read

nicotine e liquid

When it comes to vape e-liquid, there are two terms that re constantly used: PG and VG. This can seem a bit confusing to newcomers however, knowledge of these two key ingredients can improve your vaping experience. Find out what Flavours go well with high PG and high nicotine e liquid.


What is VG and PG?

  • PG and VG are odourless liquids that are combined with flavouring and nicotine to create e-liquid.
  • Propylene Glycol and Vegetable Glycerin produces vapour and evaporates when heated, allowing them to be inhaled.
  • PG and VG are not oils and do not cause medical issues.
  • PG and VG have a different consistency and a slightly different taste.
  • VG is sweet and thick.
  • They have distinct mouth and throat sensations when vaped.
  • Most modern e-liquid uses a combination of the two fluids, though the ratio can vary dramatically.
  • Some vape tanks and kits only work properly with certain levels of VG and PG. Make sure you choose the right e-liquid with the correct VG/PG ratio because it can put you off vaping.


Propylene Glycol (PG)

nicotine e liquid
PG stands for Propylene Glycol, PG is a synthetic compound thinner than VG however carries a sweet taste. PG is a fluid that has no odour or colour.  Foods and medicines have PG which keeps them moist. Some people might be sensitive to PG, we recommend switching to a higher VG e-liquid.
Use High PG e-liquid in mouth to lung devices as the liquid is thinner and is able to travel to the coil. These are also perfect for those wanting to quit smoking as the flavour is better and available in high nicotine strengths giving you a better throat-hit. High PG and a 50/50 ratio e-liquids are ideal for beginners and recommended for devices with low power or with a high resistance coil so that there is a throat hit.

PG can be found in these household items:

  • Toothpaste and oral products.
  • Medical products used orally, injected or as topical.
  • Make-up, shampoo and baby wipes
  • Some pet foods

Although, some people find that high PG ratio can cause an irritation to the throat. An allergy to PG is somewhat rare, but some have been reported. If you have purchased an e-liquid and find yourself getting a rash or other unpleasant reaction then you might be very sensitive to PG and should look for a high VG e-liquid instead.

Nevertheless, common side effects of using e-liquid that contains PG are dry mouth, dehydration, sore throat and hiccupping. Drink more water when you start vaping for your body become accustomed to Propylene Glycol.


Vegetable Glycerin (VG)

nicotine e liquid

VG stands for Vegetable Glycerin , VG comes from vegetable oils, although it is processed from oils, it is not an oil and it is safe for vegetarians. VG is a non-toxic, colourless fluid without any smell but is sweet and thick. High VG e-liquid is recommended to be used in sub-ohm tanks as the coils are able to wick the liquid more efficiently and will produce denser vapour. 
Liquids with a higher percentage of VG are more likely to have a lower nicotine strength; 0mg, 3mg, 6mg and some in 12mg. This is due to the coils that are most likely going to be used whilst vaping high VG liquids, as the coils will be for sub-ohm users (0.15ohm – 0.6ohm) and will require a higher wattage.
Do not heat Pure glycerine to more than 250 °C, this can generate a harmful substance known as acrolein. There is almost no regulated device capable of heating e-liquids to this temperature, but if in doubt, do not hesitate to ask the advice of one of our staff members!

VG is found in these household commodities:

  • Toothpaste and oral products.
  • Medical products used orally, injected or as topical.
  • Make-up, shampoo and baby wipes
  • Some pet foods
  • Sweetener sugar replacement
  • Soap
  • Hand Cream

VG e-liquid is thicker than PG e-liquid, which means it reduces the life of coils quicker. High VG e-liquids tend to clog up coils quicker and will not work well in certain tanks. Non-sub-ohm coils (under 1.0 Ohm resistance) will struggle dealing with high VG e-liquid.

In addition, VG has the same common side effects as PG such as dry mouth, dehydration, sore throat and hiccupping. Drink more water when you start vaping for your body become accustomed to Vegetable Glycerin.


What kind of Vape do I need?

For tanks with a high ohm resistance you will need to use 50% VG / 50% PG ratio. This is due to the coils not being able to cope with thick e-liquid. This is because of the small holes in the coil that lets the e-liquid travel to the cotton and wire. Using tanks that are for mouth-to-lung should be vaped at around 6 – 15w and with a nicotine level of 6mg – 18mg, including nicotine salts.

Sub-ohm tanks are able to take thicker nicotine e liquid with a higher percentage of VG. The coils have bigger holes which means that more liquid and thicker liquid is able to travel to the cotton and wire. But these types of tanks guzzle through e-liquid.

Rebuildables are great for those who want to build their own coils, this gives you more flexibility on which e-liquid ratio you want to use. It does still depend on the resistance of the coil but most people who use rebuildables use high VG e liquid.



VG and PG are easy to understand. They work well but in different ways, we recommend starting with a 50% VG / 50% PG ratio then try out high VG (70%) and see what ratio you prefer. Make sure you use the correct nicotine e liquid ratio with your vape kit and tank.

Many vapers use different ratios of VG and PG. Flavours such as Tobacco, Fruits and menthol go well with high PG and high nicotine e liquid. Flavours such as dessert, cream and custard tend to work well with high VG e-liquid as it is thicker and sweeter.

Remember, there is no right or wrong when it comes to choosing the right flavour or VG/PG ratio, it is all down to personal preference. If you want to learn how to mix your nicotine booster, read our blog on 'How To Mix Your Nicotine Booster'.

If you have any questions regarding VG and PG ratios or anything else vape related. We are on hand to offer support and advice whether it's by phone, store or live chat via our website.

Visit our online shop for vape e liquids from basic flavours to the most premium complex blends of e-liquid. Starter kits, vapes tanks, and sales on selected vape products.


Vapox Team

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