What is E Juice?

Posted on 15 November 2022 | Updated on 06 June 2025 |

What Is E-Juice?

What is e-juice or vape filler? The e-juice, or e-liquid or vape juice, is a liquid solution used in electronic cigarettes, also known as vape devices, to create vapor. It typically contains a mixture of propylene glycol [PG], vegetable glycerin [VG], flavorings, and sometimes nicotine.

The PG/VG ratio can vary, with some e-juices containing more PG for a stronger throat hit and others having more VG for more significant vapor clouds. Additionally, e-juice comes in various flavors, from traditional tobacco and menthol to fruity, dessert, and candy. Below you'll find more detailed answers about what is e-juice or e-liquid.

What Is E-Juice Made Of?

Since we have no high grades in chemistry, we’ll be based on information from reliable sources. So, what is e-juice made of? The e-juice, as mentioned above, is typically made up of a few main ingredients: propylene glycol [PG], vegetable glycerin [VG], flavorings, and nicotine [although some e-juices are nicotine-free].

The PG and VG are the base liquids that make up most of the e-juice, while the flavorings provide the taste and aroma. Nicotine, if present, is an optional ingredient added for those who still want to get the nicotine buzz without smoking tobacco.

Some e-juices may contain additional ingredients such as distilled water or alcohol for thinning and throat hit. Some devices, such as Sourin Air mod, are compatible with both types of e-juices. However, familiarize yourself with the device's user manual to be sure which filler is compatible with your device.

What is VG in e-juice?

What is VG in e juice, and why does the vape filler need this component? Vegetable glycerin, or VG, is a natural vegetable-based liquid commonly used as a base ingredient in e-juice. It is a clear and odorless liquid that is sweet and acts as a thickening agent. The VG is frequently used alongside propylene glycol [PG] in e-juice formulations to create a smooth and satisfying vapor.

It is generally considered safer than PG and is often preferred by those with PG allergies or sensitivities. Additionally, many users prefer VG since it produces more vapor than PG, which can enhance the overall vaping experience.

What is PG in e-juice?

Important to know what PG is in e-juice, and why the vaping fillers are separated into two kinds. Propylene glycol [PG] is a common ingredient in e-juice, the liquid used in electronic cigarettes or vape pens. The PG is a colorless, odorless liquid used as a solvent and is considered generally safe for consumption by the US Food and Drug Administration [FDA].

It is also used in other products, such as medications, cosmetics, food, and beverages. In e juice, PG is typically used as a base ingredient to help distribute flavorings and nicotine evenly throughout the liquid and because it produces a smoother throat hit than vegetable glycerin [another common e juice ingredient].

However, some individuals may be sensitive to PG and may experience irritation or allergic reactions when using e-juice that contains this ingredient. Therefore, what PG is in e-juice is essential for the user to comprehend, as it is considered generally necessary to know the exact definition of every ingredient consumed.

What Is Pre-Steeped E Juice?

The simplest explanation of pre-steeped e-juice is the following: Pre-steeped e-juice is a type of e-juice that is generally steeped before being sold. Steeping lets e-juice sit for an extended period, allowing the flavors to develop and blend thoroughly.

Pre-steeped e-juice is made available for vapers who do not desire to go through the steeping process themselves or do not have the time to do so. Furthermore, it is usually more expensive than non-steeped e-juice since the manufacturer or vendor has already invested time, effort, and resources to complete the steeping process.

Conclusion

E-juice plays a vital role in the vaping experience. Knowing the ingredients and their role will help make a correct choice. Consequently, we strongly advise reading the ingredients label of the e-juice before purchasing it.

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