PG & VG in e-cigarettes

Quick Answer:

Propylene Glycol (PG) and Vegetable Glycerin (VG) are the two main bases of e-liquids. PG carries flavor and provides throat hit, while VG creates vapor density and smoothness. The right PG/VG mix depends on your device, atomizer, and personal preference, with common ratios ranging from 50/50 to 70/30. Proper atomizer care involves avoiding coil flooding, ensuring wicking compatibility, and cleaning regularly to prevent residue buildup.

What Are PG and VG?

Propylene Glycol (PG): A thin, odorless liquid that enhances flavor and provides a sharper throat hit. It mimics the sensation of smoking and is favored by those who prioritize taste.

Vegetable Glycerin (VG): A thicker, sweeter liquid that produces dense vapor clouds. It delivers smoother hits but can mute flavors slightly.

Both are food-grade substances widely used in pharmaceuticals, cosmetics, and food products, making them safe for inhalation under normal vaping conditions.

PG/VG Ratios and Their Effects

High PG (70/30 PG/VG): Strong throat hit, crisp flavor, less vapor. Best for mouth-to-lung (MTL) devices.

Balanced (50/50): A versatile mix suitable for beginners, offering both flavor and vapor production.

High VG (70/30 VG/PG): Smooth inhale, massive clouds, softer flavor. Ideal for sub-ohm atomizers and direct-to-lung (DTL) vaping.

Experimentation is key—your ideal ratio depends on your atomizer’s coil resistance, airflow, and your personal preference.

Atomizer Care and Usage Tips

Wicking compatibility: High VG liquids are thicker and may struggle to wick in smaller coils. Ensure your atomizer is designed for the viscosity of your chosen mix.

Avoid flooding: Too much PG or improper priming can cause excess liquid in the coil, leading to gurgling and spit-back.

Coil longevity: VG-heavy juices caramelize faster, leaving residue on coils. Regular cleaning or replacement is necessary.

Airflow adjustment: Proper airflow prevents overheating and ensures smooth vaporization.

Tank hygiene: Clean your atomizer regularly to avoid flavor contamination and buildup.

Best Practices for Mixing and Using

Start with 50/50 if you’re new for balanced flavor and vapor.

Adjust based on device: MTL tanks prefer higher PG, while sub-ohm tanks thrive on higher VG.

Prime coils properly: Always saturate the wick before vaping to prevent dry hits.

Monitor heat: High VG requires more power; ensure your device can handle it.

Store liquids correctly: Keep e-liquids sealed, away from sunlight and heat, to preserve flavor and consistency.

Conclusion

PG and VG are the backbone of e-liquids, shaping flavor, throat hit, and vapor production. The right mix depends on your atomizer type and vaping style. With proper coil priming, airflow management, and regular cleaning, you can maximize both performance and longevity of your device.