What Is the Difference Between PG and VG?

January 5, 2026 • trishan • Vape

In the rapidly evolving world of UAE’s vaping culture, choosing an e-liquid is no longer just about picking a flavor like “Double Apple” or “Cool Mint.” As hardware technology becomes more sophisticated with the rise of high-powered sub-ohm mods in Dubai and sleek, discreet pod systems in Abu Dhabi the chemistry of your e-liquid base has become the defining factor of your vaping experience.

The foundation of every bottle of juice consists of two primary carriers: Propylene Glycol (PG) and Vegetable Glycerin (VG). While they might seem like interchangeable liquids, the ratio between them is what dictates whether you enjoy a smooth, flavorful draw or end up frustrated by burnt hits and leaky tanks. In the harsh, high-temperature climate of the Emirates, understanding this balance is even more critical; a ratio that works in a cool climate might cause your tank to flood during a humid afternoon at Jumeirah Beach.

Since the UAE legalized and regulated the sale of electronic cigarettes in 2019, the market has shifted toward high-quality, standardized products. We have moved past the “wild west” era of DIY mixing into an era of precision aerosol production. Whether you are a cloud chaser looking for maximum density or a former smoker seeking a sharp, satisfying throat hit, the PG/VG ratio is the “secret sauce” that makes or breaks your device’s performance. In this guide, we will break down the science of these ingredients so you can optimize your setup for the perfect puff every time.

What is Propylene Glycol (PG)? The Flavor Carrier

Propylene Glycol, or PG, is a synthetic organic compound that serves as one of the two primary pillars of any e-liquid. In its pure form, it is a colorless, odorless liquid with a thin, water-like consistency. In the context of the UAE market, safety is paramount; any reputable e-liquid sold in the Emirates must utilize Food Grade PG. This grade of the compound is “Generally Recognized as Safe” (GRAS) by the US FDA and, more importantly for local consumers, must comply with the strict ESMA (Emirates Authority for Standardization and Metrology) standard UAE.S 5030. This regulation ensures that the PG used is of pharmaceutical purity, free from harmful contaminants like ethylene glycol, which is strictly prohibited in regulated vape products.

The Science of Flavor and Sensation

The primary reason PG is indispensable to your vaping experience is its role as a solvent. It is exceptionally efficient at binding with food-grade flavorings and nicotine, ensuring they remain suspended and evenly distributed throughout the liquid. If you’ve ever wondered why certain “tobacco” or “menthol” pods provide such a sharp, distinct taste, it is likely due to a higher PG concentration. Because PG is nearly tasteless, it does not interfere with the delicate notes of the aroma, allowing the intended profile to shine through.

Furthermore, PG is the ingredient responsible for the throat hit.This is the tactile, slightly “raspy” sensation at the back of the throat that mimics the feeling of inhaling traditional combustible tobacco. For many residents in the UAE transitioning away from cigarettes, a higher PG ratio is a deliberate choice. It provides the sensory “kick” that makes the transition feel authentic and satisfying.

Why Many Vapers Choose High PG

Vapers often gravitate toward high-PG blends (such as 60/40 or 70/30 PG/VG) when using Mouth-to-Lung (MTL) devices or compact pod systems. Because of its low viscosity, PG wicks into small coils much faster than its thicker counterpart, VG. This prevents the cotton from drying out too quickly a common cause of the dreaded “dry hit.”For those who prioritize flavor clarity and a cigarette-like physical sensation over large clouds, PG is the essential carrier that delivers that precise experience.

What is Vegetable Glycerin (VG)? The Cloud Maker

If PG is the foundation for flavor and sensation, Vegetable Glycerin (VG) is the architect of the visual experience. VG is a natural chemical derived from plant oils most commonly palm, coconut, or soy. In the UAE’s premium e-liquid market, high-quality VG is prized for its high purity levels (often 99.5% or higher), ensuring it meets the pharmaceutical-grade standards required for safe inhalation.

Texture and Viscosity

The most immediate difference you will notice with VG is its viscosity. It is significantly thicker and more syrupy than PG.³ This thickness is precisely what allows for the production of dense, voluminous vapor clouds that have become a hallmark of modern vaping.⁴ Because of this high viscosity, VG is the primary ingredient used in sub-ohm vaping. Devices with large airflow and high-wattage coils require this thicker base to prevent the liquid from simply running through the atomizer and leaking out of the air vents—a common issue in the humid UAE climate.

The “Smooth” Factor and Natural Sweetness

From a sensory perspective, VG is the “smooth” counterpart to PG’s “sharpness.” It provides a much gentler inhale, making it ideal for vapers who find high-PG liquids too harsh on the throat. Additionally, VG possesses hygroscopic properties, meaning it naturally attracts and retains water molecules. While this contributes to the thick, “heavy” mouthfeel of the vapor, it is also why vapers often experience a dry mouth (xerostomia) after a long session; the VG is literally absorbing moisture from its surroundings.

VG also carries a light, natural sweetness.While this makes it a perfect base for dessert, cream, and fruit-flavored e-liquids popular in local shops, it can sometimes “mute” more delicate or complex flavors.¹² This is why many high-VG liquids require a longer steeping period to allow the flavor concentrates to fully bond with the thicker base.

Sourcing and Purity

Expert-level vapers often look at the sourcing of their VG.While palm-derived VG is common due to its abundance, some premium brands emphasize soy or rapeseed origins to cater to specific purity preferences.¹⁵ Regardless of the source, the role of VG remains the same: to provide a creamy, dense aerosol that delivers nicotine smoothly and satisfies the visual craving for “big clouds.”

PG vs. VG: The Head-to-Head Comparison

When selecting your next bottle of e-liquid in a UAE vape shop, you aren’t just choosing between two ingredients; you are choosing the “personality” of your inhale. While both PG and VG are essential, they sit on opposite ends of the performance spectrum. Understanding how they interact with your hardware is the key to maximizing coil longevity and avoiding common maintenance headaches.

Quick Comparison Guide

Feature	High PG (Propylene Glycol)	High VG (Vegetable Glycerin)
Throat Hit	Strong & Sharp (Cigarette-like)	Smooth & Mild
Vapor Production	Low (Discreet/Stealthy)	High (Dense, Thick Clouds)
Wicking Speed	Fast (Thin consistency)	Slow (Thick/Syrupy)
Flavor Intensity	Clear & Sharp	Muted & Sweet
Best For	Pod Systems / MTL	Sub-Ohm Tanks / DTL

Atomizer Compatibility and Hardware Performance

The “correct” ratio depends entirely on your atomizer compatibility. Because PG is thin, it travels through the small wicking ports of a pod system or high-resistance coil (above 1.0 ohm) with ease. However, if you use a high-PG liquid in a high-wattage sub-ohm tank, the low viscosity may cause the liquid to flood the deck, leading to messy leaks through the airflow vents.

Conversely, the thick viscosity of VG requires the large wicking ports found in sub-ohm tanks. If used in a small pod device, the thick liquid cannot saturate the cotton fast enough, leading to “dry hits” and scorched coils. For those using premium desert-flavored shortfills which are typically high-VG ensuring your device can handle the thickness is vital for preserving your hardware.

The Role of the Steeping Process

Another factor experts consider is the steeping process. PG is a superior solvent, meaning flavor molecules bond to it almost instantly. High-PG juices are often “shake and vape” ready. However, because VG is thicker and naturally sweeter, it takes much longer for the flavor concentrates to homogenize. If you are buying a high-VG juice, letting it “steep” (rest) for a week or two in a cool, dark place can significantly enhance the depth of the flavor profile, moving it from “muted” to “rich.”

UAE Local Regulations: ESMA Standards for E-Liquids

In the UAE, the transition from an unregulated “grey market” to a structured, legal industry reached a milestone in April 2019. Since then, the sale of e-liquids and vaping devices in Dubai, Abu Dhabi, and across the Emirates has been strictly governed by the Ministry of Industry and Advanced Technology (MoIAT), formerly known as ESMA. For a consumer, this means that every bottle of e-liquid on a shelf is legally required to carry an ECAS (Emirates Conformity Assessment Scheme) certification.

The Importance of ESMA/MoIAT Certification

Buying ESMA-certified liquids isn’t just a matter of following the law; it is your primary safeguard for health. Under the UAE.S 5030 standard, e-liquids must undergo rigorous laboratory testing before they can be sold. These tests ensure that the PG and VG used are of pharmaceutical grade and, crucially, that the liquid is free from prohibited substances. Specifically, the UAE bans harmful additives often found in unregulated markets, such as diacetyl (linked to respiratory issues), vitamin E acetate, and certain heavy metals like lead and cadmium.

The Risks of the “Grey Market”

Despite strict regulations, uncertified or “home-mixed” liquids can sometimes surface in the grey market. These products are a significant safety risk for several reasons:

Contaminants: Without lab-grade filtration, liquids may contain impurities like ethylene glycol or industrial-grade glycerin not intended for human inhalation.
Inaccurate Nicotine Levels: Unregulated bottles often mislabel nicotine strength, which can lead to accidental overconsumption or nicotine poisoning.
Poor Packaging: Certified products must feature child-resistant packaging and bilingual (English/Arabic) health warnings.

When you purchase your PG/VG blends from licensed retailers in hubs like Al Quoz or specialized shops in Abu Dhabi, you are ensuring that the vapor you inhale meets one of the highest safety benchmarks in the world. Always look for the conformity mark on the packaging to ensure your “cloud making” stays within the bounds of safety and local law.

Finding Your Perfect Ratio: A Guide for Every Device

Navigating the aisles of a vape shop in Dubai Marina or browsing online delivery platforms can be overwhelming given the sheer variety of hardware available in 2026. The “best” PG/VG ratio is not a universal constant; it is a variable that must be matched to your specific device to ensure peak performance and flavor clarity.

The 50/50 Split: The Executive’s Choice

The 50/50 PG/VG ratio has become the gold standard for the professional UAE demographic. If you are using popular pod systems like the RELX, Myle, or the Uwell Caliburn series devices often favored for their portability in office environments or social gatherings—this balanced ratio is essential.

Because pod systems utilize small, high-resistance coils (typically above 0.8 ohms), they require a thinner liquid that can saturate the cotton wick almost instantly. A 50/50 blend provides enough PG to deliver a sharp, cigarette-like throat hit and clear flavor, while the 50% VG ensures the vapor is visible but discreet. This balance prevents the “spit-back” often caused by liquids that are too thin, and the “burnt hits” caused by liquids that are too thick for small pods to handle.

70/30 (High VG): The Cloud Chaser’s Standard

For enthusiasts using high-wattage sub-ohm tanks or advanced mod kits like the Vaporesso Gen or GeekVape Aegis series, a 70/30 VG/PG ratio is the industry baseline. At this concentration, the liquid is notably more viscous. Sub-ohm coils have large wicking ports designed to drink up this thicker syrup. The high VG content allows the device to produce the dense, voluminous clouds associated with “Direct-Lung” (DL) vaping. This ratio offers a remarkably smooth inhale, making high-nicotine consumption more comfortable, though it is most commonly paired with lower nicotine strengths (3mg or 6mg) to avoid an overwhelming throat sensation.

Max VG: Specialized Performance

Max VG e-liquids are those where the only PG present is usually that found in the flavor concentrates themselves, often resulting in an 80/20 or 90/10 split. These are specialized liquids primarily used for:

Competition-Level Vaping: Maximizing cloud density for those who enjoy the “hobbyist” side of the culture.
PG Sensitivities: A small percentage of the UAE population may experience a scratchy throat or mild allergic reaction to PG; for them, Max VG is a necessary health-conscious choice.

Matching your ratio to your gear doesn’t just improve the taste; it protects your investment. Using a thick 80/20 liquid in a sleek office pod will burn your coil in hours, while a thin 50/50 liquid in a massive sub-ohm tank will likely result in a messy leak across your car seat or desk.

Troubleshooting: Is Your Ratio Wrong?

Even with the highest-quality hardware available in the UAE, a mismatch between your device and your e-liquid ratio can lead to a frustrating experience. Identifying the symptoms of an incorrect PG/VG balance early can save you from wasting expensive pods or prematurely ruining your coils.

Symptoms of Excessively High PG

If your liquid is too thin for your specific tank—a common issue when using high-PG juices in large, high-wattage sub-ohm tanks—the most immediate sign is leaking. Because PG has a low viscosity, it can seep through the cotton wicking and flood the internal chamber, eventually dripping out of the airflow vents. From a sensory perspective, a ratio with too much PG for your tolerance may cause excessive throat irritation or a persistent cough, as the “throat hit” becomes too aggressive and drying.

Symptoms of Excessively High VG

Conversely, if you use a thick, high-VG liquid in a compact pod system or a high-resistance coil, you will likely encounter dry hits. Because VG is syrupy, it struggles to travel into the small wicking holes fast enough to keep the cotton saturated between puffs. This leads to the cotton singeing, resulting in a bitter, burnt taste. Furthermore, high-VG liquids are notorious for “gunking” coils; the natural sugars and thickness of the VG can leave a carbon residue on the heating element, significantly shortening its lifespan and leading to a muted flavor profile.

Safety Tip: Throat Hit vs. Burnt Coil

It is vital to distinguish between a “strong throat hit” and a “burnt coil.” A strong throat hit—caused by high PG or high nicotine—feels like a sharp tingle at the back of the throat on the inhale, but the flavor remains clean. A burnt coil, however, produces a harsh, acrid, and “charred” taste that lingers on the tongue. If you experience the latter, stop vaping immediately; inhaling vapor from scorched cotton is unpleasant and can expose you to harmful particulates.

Health and Sensitivities: The “PG Allergy” Explained

While Propylene Glycol is recognized as safe for the general population by global and local health authorities, a small percentage of the UAE vaping community estimated at around 3.5% to 10% may experience a specific sensitivity or, in rarer cases, a true allergy to PG. Because PG is a humectant, it naturally draws moisture from its environment, which can lead to mild dehydration. However, for those with a genuine intolerance, the symptoms go beyond mere thirst.

Identifying the Red Flags

Distinguishing between the typical “adjustment period” of a new vaper and a PG sensitivity is crucial. Common indicators include:

Persistent Respiratory Irritation: A dry, sore, or “scratchy” throat that does not improve with increased water intake.
Skin Reactions: Redness, itchy patches, or a localized rash (often called a “vape rash”) around the mouth and nose where vapor is exhaled.
Sinus Discomfort: A faint burning or tingling sensation in the nasal passages.
Swollen Gums: In rare instances, inflammation of the oral tissues can occur.

The “100% VG” Solution

If you suspect a sensitivity, the most effective expert-recommended step is to switch to 100% VG or “Max VG” e-liquids. These blends eliminate the PG carrier entirely, offering a much smoother, non-irritating inhale. While these liquids are thicker and may require a device with larger wicking ports, they allow sensitive users to continue their journey away from combustible tobacco without physical discomfort.

Medical Disclaimer: The information provided in this section is for educational purposes only and does not constitute medical advice. If you experience severe symptoms such as difficulty breathing, swelling of the lips or tongue, or a persistent rash, stop vaping immediately and consult a qualified healthcare professional in the UAE.

Vaping in the UAE Climate: Does Heat Affect PG/VG?

The unique environmental conditions of the Middle East play a significant role in how your e-liquid behaves. In the UAE, where summer temperatures regularly soar above 40°C, thermodynamics can drastically alter the physical properties of your vape juice. The most critical factor affected by this heat is viscosity.

As the ambient temperature rises, both PG and VG become significantly thinner and more fluid. A 50/50 blend that performs perfectly in a temperature-controlled office in DIFC may suddenly take on the consistency of water after sitting in a car or being used outdoors in the midday heat. This “thinning out” is the primary cause of the increased leaking and “spit-back” that many UAE vapers report during the hotter months.

Practical Tip for the Summer Heat

To combat this, seasoned vapers in the region often adjust their ratios seasonally. If you usually use a 50/50 ratio in a pod system and find it starts leaking during July or August, switching to a 60/40 or 70/30 VG/PG blend can be a game-changer.

Because VG is naturally thicker, its “thinned out” state in the heat mimics the standard room-temperature consistency of a thinner liquid. By choosing a higher VG ratio, you create a buffer that prevents the liquid from oversaturating the coil and escaping through the air intake. Additionally, always try to store your device and e-liquid bottles in a cool, shaded place; exposing your juice to extreme heat not only causes leaks but can also accelerate the oxidation of nicotine, leading to a peppery, unpleasant taste.

Conclusion: Customizing Your UAE Vaping Journey

Mastering the balance between PG and VG is the most effective way to tailor your vaping experience to your personal needs and hardware. Whether you prioritize the sharp, cigarette-like throat hit of a high-PG blend in your pod system or the smooth, dense clouds of a high-VG liquid for your sub-ohm mod, your choice directly impacts flavor, performance, and coil longevity.

In the UAE’s unique climate and strictly regulated market, making an informed decision ensures both satisfaction and safety. If you are still unsure which ratio suits your specific device or lifestyle, visit a licensed local retailer. Consulting withcertified vape professionals in Dubai or Abu Dhabi is the best way to ensure your setup is optimized, ESMA-compliant, and perfectly balanced for the Emirates heat.

Frequently Asked Questions

Q: Which PG/VG ratio is best for the UAE’s summer heat?

A: Use a 70/30 VG/PG blend. High heat (40°C+) thins e-liquid, so a thicker VG base prevents your tank from leaking and “spit-back” when you’re outdoors.

Q: Can I use high-VG liquid in my pod system (like RELX or Myle)?

A: No. Pods have tiny coils that can’t “wick” thick VG fast enough. Stick to a 50/50 ratio to avoid burnt hits and preserve your pod’s lifespan.

Q: How do I know if my e-liquid is legal and safe in the UAE?

A: Look for the ESMA/MoIAT certification mark. This ensures the PG/VG is pharmaceutical-grade and free from banned toxins like diacetyl, meeting strict UAE safety standards.

Q: What are the signs of a PG sensitivity?

A: If you experience a persistent scratchy throat or skin redness that water doesn’t fix, you may be sensitive to PG. Switch to a “Max VG” liquid to see if symptoms clear.

Q: Why does my vape taste burnt even with a new coil?

A: This usually means your liquid is too thick for your device or you didn’t “prime” the coil. Ensure your ratio matches your gear (e.g., 50/50 for pods, 70/30 for big tanks) and let the juice soak in for 5 minutes before firing.