If you’ve ever looked at a bottle of e-liquid and noticed labels like 70/30 VG/PG or 50/50, you might have wondered what those numbers actually mean. The ratio between VG and PG is one of the most important factors in determining how your vape performs.
Different ratios can change everything—from cloud size and flavour intensity to how smooth the inhale feels. Whether you prefer big clouds or a strong throat hit, understanding VG and PG will help you find the perfect vape juice for your setup.
In this guide, we’ll explain what VG and PG are, how they affect your vaping experience, and how to choose the best ratio for your device and preferences.
What Are VG and PG in Vape Juice?
All standard vape liquids are made from a base mixture of two main ingredients: vegetable glycerin (VG) and propylene glycol (PG). These two substances carry flavour and nicotine while producing vapour when heated by a vape coil.
Both ingredients are widely used in food, cosmetics, and pharmaceutical products and are considered safe for use in e-liquids when sourced from reputable manufacturers.
The difference between them lies mainly in texture, vapour production, and throat sensation.
What Is Vegetable Glycerin (VG)?
Vegetable glycerin is a thick, slightly sweet liquid derived from plant oils such as coconut, soy, or palm.
It is responsible for producing the dense vapour clouds that many vapers enjoy.
Key characteristics of VG include:
- Thick and viscous consistency
- Produces large vapour clouds
- Smooth inhale with minimal throat irritation
- Slightly sweet taste
Because VG is thicker than PG, it works best in high-powered vape devices designed for sub-ohm coils and larger airflow systems.
High VG e-liquids are especially popular among DTL (Direct-to-Lung) vapers and cloud-chasing enthusiasts.
What Is Propylene Glycol (PG)?
Propylene glycol is a thinner liquid commonly used in food flavourings, medicines, and cosmetic products.
In vaping, PG is known for carrying flavour extremely well and producing a stronger throat hit.
Key characteristics of PG include:
- Thin consistency
- Strong flavour delivery
- Noticeable throat hit similar to cigarettes
- Produces smaller vapour clouds
Because PG is thinner, it works well in low-power devices and pod systems where efficient wicking is important.
PG-heavy liquids are often preferred by MTL (Mouth-to-Lung) vapers who want a cigarette-like experience.
How VG and PG Affect Your Vaping Experience
The balance between VG and PG influences several aspects of vaping performance.
Vapour Production
VG produces thicker vapour, which leads to larger clouds.
High-VG e-liquids (such as 70/30 or 80/20 VG/PG) are commonly used in sub-ohm tanks designed for cloud production.
PG produces lighter vapour with smaller clouds.
Flavour Intensity
PG is an excellent flavour carrier. E-liquids with higher PG levels often deliver sharper and more defined flavours.
VG slightly softens flavour notes due to its thicker consistency.
However, modern premium e-liquids are often carefully balanced to maintain strong flavour even with high VG ratios.
Throat Hit
Throat hit refers to the sensation felt at the back of the throat when inhaling vapour.
PG produces a stronger throat hit, which many former smokers prefer.
VG provides a smoother inhale that feels softer on the throat.
Device Compatibility
Different devices are designed to handle different liquid thickness levels.
Using the wrong ratio can lead to problems such as:
- Dry hits
- Poor wicking
- Coil flooding
- Leaking tanks
Choosing the riht ratio helps ensure consistent performance.
Common VG/PG Ratios Explained
Most e-liquids are available in a few standard ratios. Each ratio offers a slightly different vaping experience.
50/50 VG/PG
This balanced ratio is one of the most common for beginner-friendly vape liquids.
Benefits include:
- Good flavour clarity
- Moderate vapour production
- Smooth but noticeable throat hit
- Compatible with most pod systems and starter kits
50/50 liquids are widely used with nicotine salts and small pod devices.
60/40 VG/PG
This ratio slightly favours vapour production while still maintaining good flavour delivery.
It works well in many mid-range vape devices.
Benefits include:
- Slightly thicker clouds than 50/50
- Balanced flavour and throat hit
- Suitable for both MTL and restricted DTL vaping
70/30 VG/PG
This ratio is very popular among sub-ohm vapers.
Benefits include:
- Large vapour clouds
- Smooth inhale
- Reduced throat irritation
70/30 liquids are designed for high-wattage devices and sub-ohm tanks.
Max VG
Max VG liquids contain the highest possible VG content while still allowing flavour mixing.
Benefits include:
- Massive vapour production
- Extremely smooth inhale
- Ideal for cloud chasing
These liquids are best suited for powerful vape mods and rebuildable atomizers.
Choosing the Right Ratio for Your Device
Selecting the correct VG/PG ratio largely depends on the type of vape device you use.
Pod Systems
Pod devices usually have small coils and low wattage.
Best ratios:
- 50/50 VG/PG
- 60/40 PG/VG
These thinner liquids wick quickly and prevent coil damage.
Starter Vape Kits
Beginner kits often support both 50/50 and slightly thicker liquids.
Recommended ratios:
- 50/50
- 60/40
- Light 70/30 blends
Sub-Ohm Tanks
Sub-ohm tanks operate at higher wattages and require thicker e-liquids.
Recommended ratios:
- 70/30 VG/PG
- 80/20 VG/PG
These ratios produce large clouds and smooth vapour.
Rebuildable Atomizers (RDA/RTA)
Advanced vapers using rebuildable atomizers often prefer very high VG liquids.
Recommended ratios:
- 70/30
- 80/20
- Max VG
These setups allow maximum vapour production and flavour customization.
Can the Wrong Ratio Damage Your Coil?
Using the wrong VG/PG ratio may not immediately damage your device, but it can cause performance issues.
For example:
Using high VG liquid in a pod system may cause dry hits because the wick cannot absorb thick liquid fast enough.
Using high PG liquid in sub-ohm tanks may cause leaking or flooding because the liquid is too thin.
Matching your e-liquid ratio to your device ensures smoother performance and longer coil life.
Tips for Finding Your Perfect Vape Juice Ratio
Choosing the right ratio often requires a bit of experimentation.
Here are a few tips to help you find your ideal balance.
Start with a 50/50 liquid if you’re new to vaping. This provides a balanced experience.
If you prefer bigger clouds, gradually move to higher VG ratios.
If you want a stronger throat hit and sharper flavour, try higher PG blends.
Always check your device manufacturer recommendations before using thicker liquids.
FAQs: VG vs PG Explained
Q1: Which is better, VG or PG?
Neither is better on its own. The best choice depends on your vaping style, device, and flavour preferences.
Q2: Can I mix VG and PG e-liquids?
Yes. Many vapers mix different ratios to customize their vaping experience.
Q3: Why does high VG produce bigger clouds?
VG has a thicker consistency that creates denser vapour when heated.
Q4: Is PG responsible for throat hit?
Yes. PG contributes significantly to the throat sensation during inhalation.
Q5: Which ratio is best for beginners?
Most beginners start with 50/50 e-liquids because they work well with simple devices.
Q6: Do VG and PG affect flavour?
Yes. PG carries flavour more strongly, while VG softens flavour slightly but produces smoother vapour.
Final Thoughts
Understanding the difference between VG and PG is essential for getting the best possible vaping experience.
The right VG/PG ratio affects everything from vapour clouds and flavour intensity to throat hit and device performance.
As a general rule:
- 50/50 ratios work best for pod systems and beginners
- 70/30 ratios are ideal for sub-ohm tanks and cloud production
- Higher PG provides stronger flavour and throat hit
- Higher VG produces smoother vapour and larger clouds
By matching the right ratio to your device and personal preferences, you can enjoy a smoother, more satisfying vape every time.