What Does PG and VG Mean?

PG and VG, or Propylene Glycol and Vegetable Glycerine, are both substances found in many e-liquids. PG is a colourless liquid often used as a preservative across the food industry. VG is a thickening liquid that is also typically colourless. These ingredients partially dictate the type of experience an e-liquid provides depending on the ratio of the substances.

The type of vaping experience a device provides partially depends upon the e-liquid, and the levels of VG and PG within it. This is commonly known as the VG/PG ratio. Essentially, many e-liquids contain a certain percentage of each substance. For example, an e-liquid could have a combination of 70% VG, 30% PG, or 60% VG, 40% PG.

High PG ratio e-liquids, usually above 60%, provide a stronger flavour. That is because PG is typically a thin substance - meaning it can dissolve quickly. PG generally doesn’t contain any natural flavour, so it helps blend the other flavours within the e-liquid.

A higher level of VG in an e-liquid, generally over 60%, often provides less flavour but more vapour. When it comes to VG, this typically thicker substance usually produces more vapour when used as the base for an e-liquid, compared to PG.

E-liquids with a 50/50 PG and VG split often offer a smooth vaping experience.

Another common difference between the two substances is the nature of VG and PG. As a synthetic substance, PG often has a longer shelf life. It has been used by food and pharmaceutical companies for years. VG usually has a shorter shelf life because it is organic. Normally derived from natural plant oils, VG is also often found in many food, pharmaceutical, and cosmetic products.

Nicotine, VG, and PG are all ingredients that are often found in a typical vape. The inclusion of nicotine, which is an addictive substance, is one reason why vaping is not risk-free. However, contrary to popular belief, nicotine is not the most harmful factor in cigarettes. The harmful chemicals and substances produced during the burning process - combustion - pose the greatest risk to an 18+ smoker.

Another ingredient found in many e-liquids are the flavourings. These food additives, usually blended for unique flavours, are used to amplify the aroma and taste for 18+ vapers.