What are PG and VG in Vaping?

In the world of vaping, understanding the components of your e-liquid is crucial for achieving the best experience. Two primary ingredients in most e-liquids are Propylene Glycol (PG) and Vegetable Glycerin (VG). Both of these substances play vital roles in the vaping experience, affecting everything from flavor and throat hit to vapor production. Let's delve into what PG and VG are and how they influence your vaping experience.

What is Propylene Glycol (PG)?

  • Definition: Propylene Glycol (PG) is a synthetic liquid substance that absorbs water. It's a colorless, odorless liquid commonly used in various industries.
  • Characteristics:
    • Thin Consistency: PG is less viscous than VG, making it easier for e-liquid to wick and be absorbed by the cotton in vape coils.
    • Produces Less Vapor: Because PG is thinner, it produces less vapor compared to VG.
    • Stronger Throat Hit: PG provides a throat hit similar to smoking a cigarette, which many former smokers find satisfying.
    • Carries Flavor Well: PG is an excellent carrier of flavor, making it ideal for e-liquids where a strong flavor is desired.
  • Common Uses: PG is used in food production, pharmaceuticals, and cosmetics, ensuring its safety for consumption.

What is Vegetable Glycerin (VG)?

  • Definition: Vegetable Glycerin (VG) is a natural substance derived from vegetable oils. It's a thick, sweet-tasting liquid.
  • Characteristics:
    • Thick Consistency: VG is more viscous than PG, which can affect the wicking ability in certain vape tanks.
    • Produces More Vapor: VG produces thicker, denser clouds of vapor, making it popular among cloud chasers.
    • Milder Throat Hit: VG provides a smoother throat hit, which can be more comfortable for some vapers.
    • Slightly Sweet Taste: VG has a natural sweetness that can subtly affect the flavor of e-liquids.
  • Common Uses: VG is also used in food, pharmaceuticals, and cosmetics, ensuring its safety for consumption.

The Role of PG and VG in E-liquids

  • PG/VG Ratios: The ratio of PG to VG in e-liquids significantly impacts the vaping experience.
    • 50/50: Balanced flavor and vapor production, suitable for most devices.
    • 70/30 (PG/VG): Provides a stronger throat hit with less vapor, enhancing flavor.
    • 30/70 (PG/VG): Offers a smoother throat hit with more vapor, popular for sub-ohm vaping.
  • Impact on Vaping Experience:
    • Throat Hit: PG delivers a stronger throat hit, while VG offers a smoother experience.
    • Vapor Production: VG produces more vapor, making it ideal for those who enjoy large clouds.
    • Flavor: PG is better at carrying and delivering flavors, providing a more intense taste.

Choosing the Right PG/VG Ratio

  • Vaping Devices: Different devices work better with specific PG/VG ratios.
    • Pod Systems: Often perform well with higher PG ratios due to their wicking capabilities.
    • Sub-ohm Tanks: Better suited for higher VG ratios to produce more vapor and prevent dry hits.
  • Vaping Style:
    • Mouth-to-Lung (MTL) Vapers: Typically prefer higher PG ratios for a stronger throat hit.
    • Direct-to-Lung (DTL) Vapers: Usually favor higher VG ratios for more vapor and a smoother hit.
  • Personal Preference: Encourage experimentation with different ratios to find the best balance for individual preferences.

Health Considerations

  • PG Sensitivity: Some vapers may experience allergies or sensitivities to PG, such as dry mouth, sore throat, or other irritations.
  • VG Sensitivity: Less common but can include phlegm build-up or a preference for less sweet e-liquids.
  • Hydration: Both PG and VG can dehydrate the body, so it's important for vapers to drink plenty of water to stay hydrated.


Understanding the roles of PG and VG in your e-liquid is essential for tailoring your vaping experience to your preferences. Whether you prioritize a strong throat hit, dense vapor production, or rich flavor, knowing the properties of PG and VG will help you make informed choices. Experiment with different ratios to discover the perfect balance for your needs and enjoy a more personalized vaping experience.

By staying informed about the components of e-liquids, vapers can optimize their enjoyment and satisfaction, ensuring a better and more enjoyable vaping journey.

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