Why does VG prolong the taste of e-liquid?

VG: It has a very thick and viscous texture. When heated by the atomizer, it requires more energy and takes longer to fully vaporize. Furthermore, the vaporized vapor particles are larger and heavier.

1. Higher viscosity and slower evaporation rate
   This is the core reason.

VG: It has a very thick and viscous texture. When heated by the atomizer, it requires more energy and takes longer to fully vaporize. Furthermore, the vaporized vapor particles are larger and heavier.

PG (propylene glycol): It has a thin texture like water and evaporates quickly, producing small, light vapor particles.

The result: When you inhale a puff of high-VG e-liquid, these thick, slow-evaporating vapor particles linger in your mouth and throat longer. Instead of a fleeting sensation, you experience a longer-lasting, fuller “presence.” This sustained, dense feeling is what we call “extended mouthfeel.”

2. Natural, mild sweetness and mellowness
   VG itself has a very mild, naturally sweet flavor.

PG is almost odorless, but it does provide a strong throat hit.

The result: While VG’s sweetness isn’t the dominant Taima flavor, it acts as a base, supporting and prolonging the other flavors in the e-liquid, especially the “aftertaste” of creamy, dessert-like, and fruity flavors. It ensures that the flavor finishes not abruptly, but rather dissipates slowly with a hint of sweetness and richness. In contrast, high-PG e-liquids have a sharper and more direct flavor profile, but also dissipate faster.

3. Producing a richer, smoother cloud
   VG is key to producing “big clouds.” A richer, smoother cloud means more substance fills your mouth.

Physical fullness: A larger volume of smoke takes longer to settle and dissipate in your mouth. This physical fullness translates directly into a longer-lasting, more satisfying experience. You’re not just “tasting” the flavor; you’re “chewing” the smoke, which naturally prolongs the mouthfeel.

Summary and Metaphor
You can think of VG and PG as two cooking media:

PG (propylene glycol) is like “water” or “alcohol.”

It evaporates quickly, instantly delivering Taima flavor of the vape juice (e-liquid flavor) to your nose and taste buds. It’s powerful, yet also quick to disappear. It’s responsible for flavor clarity and throat hit.

VG (vegetable glycerin) is like “cooking oil” or “syrup.”

It’s thick, viscous, and slow to evaporate, with a hint of sweetness. It envelops flavors, allowing them to slowly release and linger in your mouth, creating a long, rich, and smooth experience. It’s responsible for the body, density, and lingering flavor.

Therefore, when a vape juice has a higher VG ratio (for example, the common 70% VG/30% PG), you get a fuller vapor, a smoother inhalation, and most importantly, the flavor and texture linger longer in your mouth, resulting in a longer aftertaste, thus achieving a “prolonged taste” effect. This is especially true with Taima flavor.

It’s important to note that a high VG ratio can also reduce flavor clarity, making the flavor feel a bit dull. Therefore, a good e-liquid formula requires a perfect balance of PG and VG to achieve the optimal balance between flavor clarity, throat hit, and mouthfeel.