E-Liquid: When Is It Too Thick, Thin, or Separating?

Posted by owen Li on

The popularity of vaping has been on a steady rise over the past few days. This is mostly because a large number of people have switched from smoking to vaping as a healthier alternative. It can be a great hobby to invest in different vape devices and experiment with various e-juices. It is also exciting to join a community of vaping enthusiasts in your locality, given its prevalence.

If you have recently started out, keep in mind that there’s so much to learn about the world of vaping. Nevertheless, in this article, we’ll specifically explore what the thickness of e-liquid entails so that you know when your e-liquid is too thick, thin, or separating:

Main ingredients of e-liquid

It’s worth knowing that these products come in two primary ingredients, as follows:

  • Propylene Glycol (PG): This is an organic compound that is colourless or nearly odourless, and is generally considered safe. It is a substance that is used in various flavours such as vanilla extracts, food colouring, and medicines. PG is typically a thinner liquid that allows the e-liquid to soak into the wick much faster.

  • Vegetable Glycerine (VG): This is an organic compound that’s colourless, odourless, and sweet. It is commonly found in products like cough syrups, kinds of toothpaste, and baked food items. VG is the same as PG, yet is a thick, sweet vegetable-based liquid.

  • Other content: Other ingredients of e-liquid include water, nicotine, and food-grade flavouring. These products can either have varying nicotine levels or zero nicotine. The food-grade flavouring is the same type of food flavouring, which is generally safe to consume.


Common e-liquid ratios

Now, let’s take a look at common ratios that you can find in the market, as follows:

  • 50% VG / 50% PG e-liquid: Both compounds have equal content in a standard 10ml bottle. This product has a thin consistency ideal for vaping in low-powered devices. It also provides a ‘throat hit’ that is suitable for smokers trying to switch to vaping due to the similar sensation.

  • 70% VG / 30 % PG e-liquid: The standard ratio in a Shortfill product consists of 70 per cent VG and 30 per cent PG. For this reason, it is a bit thicker than the previous option. This type is suitable for experienced vapers looking for a smoother vaping sensation, yet it also allows vapers to produce bigger and better clouds.

E-liquid effects

Now that we understand PG and VG and their ratio in e-liquid products, let’s consider how the vape juice can be suitable for your device and circumstance:

  • Thin: A thin e-liquid won’t work for a high-powered vape device. If you’re producing a large cloud of vapours, your vape juice will quickly run out. Because of this, it’s best to go for a 70/30 ratio for a much thicker e-liquid for your high powered device.

  • Thick: A thick e-liquid won’t work for a pen-like vape device. This is because the coil won’t get heated for the vape juice to go through the tank and into the cotton. As a result, it won’t get vaporised, which is why you should use a 50/50 ratio for a low-powered vape device.

  • Separating: PG and VG do not naturally blend. If you leave your e-liquid bottle unused for quite a while, they will begin to separate. The same will happen if your e-liquid gets too warm or too cold. Be sure to shake your bottle regularly, and store it at regular temperature. Most importantly, don’t leave it spoiled over time.


At this point, you now know what ingredients an e-liquid product contains and what ratio of PG and VG to use. Likewise, remember to take note of the circumstances affecting your e-liquid thickness so that you will be properly guided to make the most of your vaping experience. 

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