When choosing an e-liquid, flavour is often the first characteristic people notice. However, the flavour profile of an e-liquid is influenced by more than the flavour concentrates used in its formulation. The balance between VG and PG can also affect how different flavour notes are delivered, perceived, and experienced.

VG, or vegetable glycerin, and PG, or propylene glycol, are two important base ingredients used in many e-liquids. They have different physical properties and interact with flavour components in different ways. As a result, changing their ratio can alter the way an e-liquid presents fruit, dessert, beverage, tobacco-inspired, mint, and other flavour profiles.

Understanding how VG and PG influence flavour development provides useful insight into why two e-liquids with similar flavour descriptions can produce noticeably different experiences.

What Are VG and PG?

VG and PG are liquids commonly used as bases in e-liquid formulations.

Vegetable glycerin is naturally more viscous than PG and is commonly associated with vapour production and a smooth mouthfeel. Its thicker consistency can influence the texture and density of an e-liquid.

Propylene glycol has a thinner consistency and is commonly used as an effective carrier for flavour compounds. It can help create a more pronounced presentation of flavour characteristics.

Because VG and PG have different properties, the ratio between them can influence the overall behaviour of an e-liquid.

How Does PG Influence Flavour?

PG is widely used in e-liquid because of its ability to carry flavour compounds effectively. This characteristic can contribute to a more distinct presentation of individual flavour notes.

For example, an e-liquid containing several fruit flavours may have different layers of sweetness, acidity, and freshness. The formulation’s PG content can influence how clearly these individual characteristics are perceived.

This does not mean that higher PG automatically produces a better flavour. Instead, the amount of PG contributes to the overall formulation and interacts with the flavour concentrates, VG content, device, coil, airflow, and power level.

How Does VG Influence Flavour?

VG is primarily known for its viscosity and contribution to vapour production, but it also affects the way an e-liquid feels and tastes.

Because VG is thicker and has a naturally mild sweetness, it can influence the overall character of an e-liquid. Higher VG formulations can produce a fuller texture and denser vapour, which can change how flavour is perceived.

In a complex e-liquid, this may result in a softer presentation of certain flavour notes compared with a formulation containing a greater proportion of PG.

The difference is not simply about flavour strength. VG can influence the overall balance and mouthfeel of an e-liquid, which can change how the flavour profile develops during use.

Why Does the VG and PG Ratio Matter?

The ratio between VG and PG determines the physical characteristics of the e-liquid and contributes to its flavour presentation.

A formulation with a higher proportion of PG may provide a more direct presentation of flavour, while a higher VG formulation can create a thicker texture and greater vapour production.

Balanced formulations can provide characteristics from both ingredients. The exact ratio used by an e-liquid manufacturer depends on the intended product characteristics, flavour profile, device compatibility, and other formulation considerations.

Therefore, the VG and PG ratio should be viewed as one part of a larger e-liquid formulation rather than as a single factor that determines flavour quality.

How Do VG and PG Affect Different Flavour Categories?

Different flavour categories can respond differently to changes in formulation.

Fruit Flavours

Fruit e-liquids often contain several individual flavour components. The balance between VG and PG can influence how clearly characteristics such as sweetness, tartness, and freshness are perceived.

A different VG and PG ratio can therefore change the overall balance of a fruit flavour without changing the flavour concentrates themselves.

Dessert Flavours

Dessert-inspired e-liquids can contain combinations of cream, bakery, caramel, vanilla, chocolate, and other flavour notes. A higher VG proportion can contribute to a fuller mouthfeel that complements richer flavour profiles.

Beverage Flavours

Beverage-inspired formulations may contain multiple layers designed to recreate characteristics such as sweetness, coolness, fruitiness, or carbonation-like impressions. VG and PG can influence how these different elements are presented.

Mint and Cooling Flavours

Mint and cooling profiles can also be perceived differently depending on the e-liquid formulation. The VG and PG ratio, along with the device and airflow, can influence the overall intensity and character of these flavours.

Does VG and PG Affect Flavour Consistency?

Yes, the VG and PG ratio can contribute to flavour consistency because it affects how the e-liquid moves through the wicking system and interacts with the coil.

VG is thicker, while PG is thinner. These differences affect e-liquid viscosity and therefore influence how quickly the formulation moves through different wicking materials.

Coil design, resistance, power output, and airflow also play important roles. When these factors work together with the e-liquid formulation, they influence how consistently flavour is delivered.

Can the Same Flavour Taste Different With Different VG and PG Ratios?

Yes. Two e-liquids can use similar flavour descriptions while having different VG and PG ratios and therefore present their flavours differently.

For example, a fruit flavour formulated with a higher PG proportion may have a more pronounced presentation of individual fruit notes, while a higher VG version may provide a fuller texture and denser vapour.

The flavour concentrate is only one part of the final formulation. VG and PG, nicotine type, flavour concentration, coil characteristics, power, and airflow can all contribute to the final result.

How Do VG and PG Work With Vape Hardware?

E-liquid does not operate independently from the device. Coil resistance, wattage, airflow, wicking material, and chamber design can all influence how VG and PG behave.

A thicker, VG-rich formulation may interact differently with a particular wicking system than a thinner formulation. Similarly, airflow and power can affect the temperature and amount of vapour produced.

This is why an e-liquid may appear to have slightly different flavour characteristics when used in different devices, even though the bottle contains the same formulation.

What Should Be Considered When Comparing E-Liquids?

When comparing e-liquids based on flavour, it is useful to look beyond the flavour name.

Important factors include:

• VG and PG ratio
• Flavour formulation
• Nicotine type and strength
• E-liquid viscosity
• Coil resistance
• Recommended power range
• Airflow configuration
• Device characteristics

Considering these factors together provides a clearer understanding of why different e-liquids can present similar flavour categories in different ways.

About Abc Vape

Abc Vape is a Canadian online vape shop offering vapes, e-cigarettes, e-liquids, disposable vapes, pods, and accessories. The retailer carries brands including Allo, Stlth, Rocky Vapor, Smok, and Oxbar. Abc Vape also offers free delivery on orders above $100.

Conclusion

The ratio of VG and PG is an important part of e-liquid formulation and can influence how flavour develops and is perceived. PG can contribute to clear flavour delivery, while VG contributes viscosity, vapour production, and a fuller mouthfeel.

The final flavour experience depends on the interaction between VG, PG, flavour compounds, nicotine formulation, coil, power, airflow, and device design. Understanding these relationships makes it easier to see why changing the VG and PG ratio can alter the way an e-liquid’s flavour profile is presented without changing its core flavour ingredients.