VG and PG are the two main base ingredients that make up most e liquids, and understanding the difference between them can make vaping feel far less confusing. This article is for UK adults who vape, smokers looking to switch, and anyone who has picked up a bottle and wondered what those ratio labels actually mean for flavour, throat hit, vapour production, and coil life. I am going to explain what VG and PG are, what each one does in a vape liquid, how they affect the way your device performs, and how to choose a ratio that suits your goals without turning it into a science project.

I have to be honest, VG versus PG is one of those topics that gets oversimplified online. People say things like VG is for clouds and PG is for throat hit, which is not wrong, but it is not the full story. The ratio you choose can affect everything from whether your coil keeps up, to whether your pod leaks, to whether you feel satisfied, to whether your favourite flavour tastes bright or oddly muted. Once you understand the basics, you can make better choices, spend less money on liquids that do not suit your kit, and avoid the common problems that make adults think vaping is “fiddly” when it does not have to be.

I also want to keep this grounded in real life and in the UK market. Since single use disposable vapes are banned in the UK, more adults are using reusable pod kits and refillable devices, and VG and PG become more relevant because you are choosing bottles and refilling. A reusable device gives you more control, but it also means you need to match your liquid to your coil and airflow, and that is where VG and PG really matter.

What VG And PG Actually Are

PG stands for propylene glycol. VG stands for vegetable glycerine, sometimes called glycerol. In vaping, these are used as carrier liquids. They hold the flavourings and nicotine, and they are what gets vaporised by the coil to create the aerosol you inhale. When you buy an e liquid, what you are mostly buying is VG and PG, with smaller amounts of flavourings and, if it is a nicotine liquid, nicotine.

In my opinion, it helps to stop thinking of VG and PG as “extras” and start thinking of them as the foundation. The foundation decides how the vape behaves. The nicotine level decides the nicotine strength. The flavourings decide the taste. But the VG and PG decide how that taste and nicotine arrive in your mouth and lungs, and how your device handles the liquid.

PG is thinner in consistency, closer to water. VG is thicker, closer to syrup. That single physical difference explains a lot of the practical differences in performance, wicking, and vapour production.

Why E Liquids Use A Blend Instead Of Just One

You might wonder why e liquids are not simply one or the other. The answer is balance. PG and VG each have strengths and drawbacks, and blending them lets manufacturers tune the experience for different devices and preferences.

PG carries flavour very well and tends to produce a stronger throat sensation for many people, especially when nicotine is present. VG produces thicker vapour and tends to feel smoother in the throat, but it can mute some flavours and it can be too thick for certain coils, especially in small pod systems.

Most e liquids use both because it creates a more rounded, reliable vape. Some liquids lean heavily towards VG for higher vapour devices. Some lean towards PG for mouth to lung setups and sharper throat feel. But the reason blends dominate is that most adults want a mix of flavour clarity, comfort, and device compatibility.

I have to be honest, the best ratio is rarely about chasing an extreme. It is usually about making your specific kit behave well while still tasting good.

The Role Of VG In Vaping

VG is responsible for a lot of the visible vapour. It tends to create a denser, thicker cloud. It also contributes to a smoother mouthfeel and a softer throat sensation for many adult vapers.

Because VG is thicker, it does not move through cotton as quickly as PG. That matters because your coil needs a steady supply of liquid to avoid drying out. In devices designed for higher power vaping, coils often have larger wicking ports and more airflow, which helps thick liquid feed consistently. In small pods designed for tighter draws, those wicking ports can be smaller, and thick VG heavy liquid can struggle to keep up, especially if you take frequent puffs.

VG also has a slightly sweet taste on its own. You do not usually notice it as a distinct sweetness, but it can make some liquids feel rounder and softer. In my experience, VG heavy liquids often make dessert flavours feel cosy and full, while fruit flavours can feel slightly less crisp than they do in a higher PG mix.

The Role Of PG In Vaping

PG is thinner and flows more easily through wicking material. That is why it is so useful in mouth to lung tanks and pod kits with small coils. It keeps up with the coil more readily, particularly when you take repeated puffs or vape in cooler environments.

PG is also an excellent flavour carrier. It helps flavourings feel brighter and more defined. If you have ever tried a liquid and thought it tastes sharp and clear, chances are it contains a decent amount of PG.

PG can also contribute to throat hit. I am not making a medical claim here, but from a user experience point of view, PG heavy liquids often feel more noticeable in the throat. For adult smokers switching, that can be helpful because it can mimic some of the throat sensation associated with smoking.

I have to be honest, PG sometimes gets framed as the “harsh” ingredient, but it is more accurate to say it is the “present” ingredient. It makes the vape feel more direct. Whether that is good or bad depends on your preference and your nicotine strength.

VG Vs PG And Vapour Production

If you are looking for visible vapour, VG generally delivers more. The thicker consistency and the way it vaporises tends to produce denser clouds. This is why many high vapour liquids are VG heavy.

PG produces less visible vapour, and the vapour it does produce often looks lighter and dissipates faster. That can be a benefit if you want discretion. A lot of adult vapers, especially those who vape in everyday situations where they do not want attention, prefer a more subtle vapour output.

I would say it is worth remembering that vapour volume is not the same thing as satisfaction. Satisfaction comes from a mix of nicotine delivery, throat feel, flavour, and routine. Bigger clouds can be enjoyable, but they are not a requirement for a satisfying vape.

VG Vs PG And Throat Hit

Throat hit is a tricky topic because it is influenced by nicotine strength, nicotine type, airflow, device power, and flavourings, not just VG and PG. Still, VG and PG do contribute.

PG tends to produce a stronger throat sensation for many people. If you combine higher PG with nicotine, especially freebase nicotine, you may get a more pronounced throat hit. For adult smokers switching, that can feel reassuring and familiar.

VG tends to feel smoother. A VG heavy liquid can reduce the sharpness of the inhale, particularly in higher power devices where the vapour volume is large. Many adult vapers who prefer a soft, warm inhale lean toward higher VG.

I have to be honest, if you are chasing throat hit by raising PG, be mindful of nicotine strength too. A high nicotine liquid with high PG in a device that delivers efficiently can feel uncomfortably strong. It is usually better to tune throat feel with a combination of device style, airflow, nicotine type, and ratio, rather than pushing one variable to an extreme.

VG Vs PG And Flavour Clarity

PG is often described as the better flavour carrier, and in everyday vaping terms that tends to be true. Higher PG mixes can make flavours feel more defined and more immediate. If you like flavours that feel crisp, such as mint, menthol, citrus, and tobacco style blends, you may prefer a liquid that contains more PG.

VG heavy liquids can make flavours feel smoother and sometimes slightly muted. That is not always a negative. Some dessert and bakery flavours can feel richer and more rounded with higher VG. But if you want bright fruit that feels sharp and lively, too much VG can sometimes make it feel softer than you expected.

In my opinion, flavour is also about temperature. Higher power vaping warms flavours and can bring out sweetness and depth. Lower power vaping can keep flavours cooler and more precise. VG and PG sit underneath that, shaping how the flavour carries through the vapour.

VG Vs PG And Wicking, Why Your Device Cares

This is one of the most important practical differences, and it is where a lot of adult vapers run into problems without realising why. Your coil needs liquid to keep the cotton saturated. If the cotton dries out and the coil heats it, you get a dry hit and that unpleasant burnt taste.

Because VG is thicker, it can wick more slowly in small coils. This is why many pod kits, especially those designed for mouth to lung vaping, perform better with liquids that are not too VG heavy. A thinner mix flows through the cotton faster and helps prevent dry hits during normal use.

Because PG is thinner, it wicks easily. That is great for small coils, but in some setups it can also increase the chance of flooding or leaking if the device is designed for thicker liquid. If the liquid is very thin and the pod or tank has a loose seal or a large wicking port, it can seep into places it should not, leading to gurgling or leakage.

I have to be honest, a huge percentage of leaking complaints are not because the device is terrible. They are because the liquid is the wrong thickness for the coil design, or because the user is pulling too hard, or because the device has been left in heat and the liquid thinned further. VG and PG do not just affect taste, they affect whether your device behaves.

How VG And PG Affect Coil Life

Coils wear out over time because residue builds on the heating element and the cotton degrades. VG and PG influence this indirectly by affecting how much liquid is vaporised and how the liquid behaves.

VG heavy liquids can leave more visible residue on coils, particularly when the liquid is sweet or heavily flavoured. This is not because VG is “dirty” but because thicker liquids and sweeteners can caramelise and build up on the coil more quickly, especially at higher power. Coil life can shorten in high VG liquids if you vape at high wattage and use very sweet flavours.

PG heavy liquids can keep wicking consistent and can sometimes reduce the risk of scorching because the cotton stays wet more easily. However, high PG does not magically guarantee long coil life. Sweet flavours still build residue, and poor technique still damages coils.

In my experience, coil life is best protected by matching the ratio to the device, using sensible power levels, and avoiding constant chain vaping that outpaces the wick.

VG And PG In Different Device Types

If you are using a mouth to lung pod kit, especially a compact one, you are typically using a smaller coil with tighter airflow. These devices often perform best with liquids that contain a reasonable amount of PG so they wick efficiently. This also supports a more cigarette like throat feel, which can help adults switching from smoking.

If you are using a sub ohm tank or a higher power direct lung setup, you are typically using larger coils with more airflow and larger wicking ports. These devices often perform best with higher VG liquids because thicker liquid supports dense vapour and a smoother inhale, and the coil design can handle the viscosity.

If you are using a modern “in between” device, such as a flexible pod kit that can do restricted direct lung, you may find you can use a broader range of ratios, but the sweet spot still depends on the exact coil and how you vape.

I have to be honest, the label pod liquid or sub ohm liquid is not just marketing. It usually points to the VG and PG balance that suits that style of coil and airflow.

Shortfills, Nicotine Shots, And Ratios

In the UK, a lot of adult vapers use shortfills, which are larger bottles of nicotine free e liquid designed to have nicotine shots added. The base shortfill is often high VG because it is designed for higher vapour devices. Nicotine shots are commonly higher in PG to keep them thin and easy to mix.

When you add shots to a shortfill, you slightly change the ratio. A high VG shortfill becomes a little less VG heavy when you add PG based nicotine shots. For many adult vapers, this ends up being a comfortable balance, because the added PG can improve flavour clarity and wicking slightly while the liquid remains thick enough for sub ohm use.

I would say it is worth remembering that mixing shots is not just about nicotine level. It also changes the feel of the liquid. If you are sensitive to throat hit, adding PG based shots can make the inhale feel a bit sharper. If you find a shortfill too thick for your coil, adding shots can sometimes help.

Nicotine Salts, Freebase Nicotine, And VG PG

Nicotine type affects throat sensation and satisfaction, and it interacts with VG and PG. Nicotine salts are often used in higher nicotine strengths in low power devices because they can feel smoother than freebase at the same strength. Many nicotine salt liquids are made with a balance that suits pods, which often means they are not extremely high VG.

Freebase nicotine liquids come in a wide range of ratios. Some are designed for pods, some for tanks. Freebase can feel sharper, and when combined with higher PG it can produce a stronger throat hit. That can be useful for adult smokers switching, but it can also be too intense if you use it in a device that delivers a lot of vapour.

I have to be honest, I see adults blame PG for harshness when the real culprit is nicotine strength and device style. A high nicotine liquid in an efficient pod will feel strong even if the ratio is balanced. A low nicotine liquid in a sub ohm tank can feel smooth even if it contains some PG. The variables work together.

Choosing A Ratio Based On What You Want

If your priority is a cigarette like draw, a noticeable throat feel, and discreet vapour, you will often prefer a mix with more PG than a cloud focused liquid. This tends to work well in mouth to lung devices and many pod kits, where wicking speed matters and flavour clarity is important.

If your priority is dense vapour, a smoother inhale, and warm flavour in a higher power device, you will often prefer a liquid that is higher in VG. This supports sub ohm and direct lung vaping styles.

If you want a middle ground, there are balanced ratios that aim to deliver good flavour and decent vapour without being too thick for many devices. In my opinion, these middle ground mixes are underappreciated because they suit a lot of modern pod mods and restricted direct lung kits.

I have to be honest, ratio choice becomes much easier when you start with the device. Ask what the coil needs first, then decide what you personally prefer within that range.

Why Some Liquids Leak In Pods And Others Do Not

Leaking is one of the most frustrating vaping issues, and VG and PG can be part of it. If a liquid is too thin for the pod design, it can seep through the cotton too quickly and flood the coil chamber. This can lead to gurgling, spitback, and liquid appearing under the pod or around the airflow.

If a liquid is too thick for the pod, it may not wick fast enough, which can cause dry hits. Then the user often pulls harder to try to get more vapour, which can create negative pressure and draw liquid into places it should not go, leading to a different kind of mess.

Heat also matters. If you leave your vape in a warm environment, the liquid thins. A ratio that behaved fine indoors can suddenly seep if it warms up significantly.

In my opinion, the best leak prevention approach is boring but effective. Use the ratio the coil is designed for, keep seals clean, avoid overfilling, and do not pull like you are trying to start a lawnmower.

VG And PG In Cold Weather

UK weather deserves its own mention because temperature changes can make liquids behave differently. VG thickens more in the cold. That means a VG heavy liquid can wick more slowly on a cold day, especially in a small pod, increasing the risk of dry hits if you vape quickly.

PG is less affected by cold in practical terms because it is thinner to begin with. So pod users often find their device behaves more consistently with a liquid that contains a decent amount of PG during winter.

I have to be honest, if your vape suddenly tastes dry or weak when you are outside in cold weather, it might not be the coil dying. It might be the liquid thickening and struggling to wick.

VG And PG Sensitivities And Comfort

Some adults report sensitivity to PG, often described as throat irritation, dryness, or an uncomfortable sensation. Others report no issues at all. Some report that high VG liquids feel smoother and more comfortable.

It is important to keep this practical and responsible. Dryness can also be a general effect of vaping because vapour can feel drying in the mouth and throat. Hydration and pacing can help. Strong nicotine can also increase throat sensation, and certain flavours, especially strong menthol or cooling flavours, can create a sharp feeling that people mistakenly blame on PG.

If you suspect PG is making you uncomfortable, I suggest making changes slowly and methodically. Try a slightly higher VG mix and see if comfort improves, while keeping nicotine strength appropriate and device style consistent. If you change everything at once, it becomes hard to know what helped.

I have to be honest, comfort matters. There is no point forcing yourself to vape a ratio that makes you feel irritated, especially when there are alternative blends that may feel better.

The Myth That VG Is Always “Smoother” And PG Is Always “Harsh”

This myth is popular because it contains a grain of truth, but it is not reliable as a rule. VG can feel smoother, but a high VG liquid vaped at high power can still feel intense because the vapour is warm and dense. PG can feel sharper, but a moderate PG liquid in a gentle mouth to lung device can feel perfectly comfortable.

Nicotine strength and nicotine type can completely change the feel. A high nicotine salt liquid can feel smooth even if it contains a lot of PG because salts tend to feel smoother for many people. A freebase liquid can feel sharp even at moderate ratios if the nicotine strength is high for the device.

For me, the better way to think about it is this. VG affects smoothness and vapour density, PG affects flavour clarity and throat presence, and the device and nicotine decide how those qualities express themselves.

How VG And PG Affect Nicotine Satisfaction

VG and PG do not change nicotine content directly, but they can change how the vape feels and how you use it, which can affect satisfaction.

A higher PG liquid in a low power mouth to lung device can deliver a more cigarette like experience. That can feel satisfying for adult smokers switching because the draw and throat feel feel familiar, and the flavour feels clear.

A higher VG liquid in a higher power device produces more vapour. Even with lower nicotine, the sheer vapour volume can create a satisfying inhale for some adults. Others find it less satisfying if they miss the tight draw and throat hit of smoking.

I have to be honest, satisfaction is personal. Some adults want a firm throat cue that tells them they have had a “proper” puff. Others want a smooth, dense inhale. VG and PG are part of how you get that, but they are not the whole story.

Understanding Ratios On Bottles Without Overthinking It

Most e liquids display a VG and PG ratio. This tells you the proportion of each in the base. Higher VG means thicker liquid and more vapour. Higher PG means thinner liquid and more flavour clarity and throat presence.

In practical terms, if you see a liquid described as high VG, it is usually intended for higher power devices, sub ohm tanks, and direct lung vaping. If you see a liquid described as suitable for pods or mouth to lung, it often contains more PG than a cloud focused liquid.

Some bottles do not show the ratio clearly, especially if they are designed for a specific device ecosystem, but most reputable UK liquids make it fairly clear whether they are pod friendly or sub ohm oriented.

I would say your easiest shortcut is to match the liquid to the coil type. If your device is designed for low power pods, choose a pod friendly liquid. If it is a higher power tank, choose a high VG liquid. Then tweak from there based on comfort and flavour preference.

UK Regulation Context, What Matters For VG And PG Liquids

In the UK, nicotine containing e liquids sold to consumers are regulated with limits on nicotine strength and packaging requirements, including child resistant packaging and clear warnings. E liquids are typically sold in smaller bottles when nicotine is included, and devices and tanks intended for nicotine use are commonly designed around capacity limits.

VG and PG themselves are common ingredients used across industries, but in vaping the key regulatory considerations are around nicotine products and consumer safety. For the adult user, the practical point is that the UK market is structured. You will usually see nicotine liquids in smaller compliant bottles and nicotine free liquids in larger bottles designed to be mixed with nicotine shots.

I have to be honest, this matters because your ratio may change when you mix shots into a shortfill. That is normal and expected in the UK market, and it is one reason many adult vapers land on a comfortable middle ground ratio without aiming for it deliberately.

Common Problems And How VG PG Plays A Role

If your vape tastes burnt, thick liquid in a small coil can be a cause because it may not wick fast enough. Too much power for the coil can also cause it. Chain vaping can cause it. So can failing to let a new coil saturate. VG and PG are one piece of the puzzle.

If your vape gurgles or spits, the liquid may be too thin for the device, or the coil may be flooded from overfilling or pulling too hard. Condensation can also build up. Again, ratio is one piece of the puzzle.

If your vape leaks, thin liquid combined with worn seals or heat exposure can contribute. So can leaving a pod on its side, or carrying it in a pocket where pressure changes and movement encourage seepage.

If your flavour feels muted, a very high VG liquid in a low power device can contribute, but coil age and airflow also matter.

I have to be honest, vaping problems are rarely one thing. But VG and PG are often the hidden factor that makes the difference between a stable vape and a frustrating one.

VG PG And Responsible Adult Use

Understanding VG and PG is not just about chasing better flavour. It is also about responsible use. If you use a thick liquid in a device that cannot wick it properly, you may get burnt hits, which is unpleasant and may push you back toward smoking out of frustration. If you use a thin liquid in a device designed for thick liquid, you may get leaks and end up handling nicotine liquid more than you should.

If vaping is part of a harm reduction approach for you as an adult, stability matters. Choosing the right VG and PG ratio for your device helps keep vaping consistent and reduces the annoyances that can derail progress away from cigarettes.

I have to be honest, the best vape is the one that quietly does its job. VG and PG help you get there.

Frequently Asked Questions About VG Vs PG

Is VG Or PG Safer

For adult users, VG and PG are widely used ingredients in many products, but vaping is not risk free overall, and it is not recommended for non smokers or young people. The sensible focus is on using products as intended, within UK rules, and choosing a ratio that suits your device to avoid misuse and unpleasant experiences. If you have concerns about sensitivity or comfort, adjusting ratios gently and observing how you feel is a practical approach.

Why Does High VG Feel Smoother

High VG often feels smoother because it produces denser vapour and can soften the throat sensation, especially when nicotine strength is lower and airflow is more open. But smoothness also depends on power, airflow, nicotine type, and flavourings.

Why Does High PG Feel Stronger

High PG can feel stronger because it carries flavour sharply and can increase throat presence. If nicotine is present, that throat feel can become more noticeable, especially in tight draw devices.

Can I Use High VG In A Pod Kit

Sometimes, but it depends on the pod and coil design. Many pod coils are small and prefer thinner liquids. If you use a very thick liquid, you may get dry hits. Some modern pod kits have coils designed to handle thicker liquids, but it is not universal.

Can I Use High PG In A Sub Ohm Tank

You can, but it may lead to flooding or leaking because sub ohm coils often have large wicking ports designed for thicker liquids. Thin liquid can feed too quickly. It can also feel harsher if you use higher nicotine than is comfortable for high vapour devices.

Does VG Or PG Affect Nicotine Strength

It does not change the nicotine strength printed on the bottle, but it can change how the vape feels and how you use it, which can influence your overall intake and satisfaction.

Why Does My Liquid Taste Different In Two Devices

Device power, coil type, airflow, and temperature change how flavour expresses itself. VG and PG ratio also changes vapour density and flavour carrying, so the same liquid can taste sharper in a pod and richer in a tank, or vice versa.

Is It Normal To Feel Dry With Higher PG

Some adults report dryness or irritation with higher PG, but dryness can also be a general vaping effect. Pacing yourself, sipping water, and adjusting ratio gradually can help you find what feels comfortable.

My Honest Takeaway, How To Choose The Right VG PG Balance

VG and PG are the base ingredients that shape how your vape feels. VG is thicker, smoother, and produces denser vapour. PG is thinner, carries flavour strongly, and often creates more throat presence. The best ratio is not a universal rule, it is the one that matches your device and your preferences.

If you are using a mouth to lung pod kit and you want a familiar, cigarette like draw with clear flavour and reliable wicking, a liquid with a meaningful amount of PG is often the practical choice. If you are using a higher power tank and you want warm, dense vapour with a smoother inhale, a higher VG liquid usually makes more sense. If you sit in the middle with a flexible device, you may find a balanced ratio gives you the best of both worlds.

I have to be honest, the quickest way to make vaping feel easy is to stop treating VG and PG as mysterious labels and start treating them as a simple compatibility guide. Match thickness to coil design, then fine tune based on taste and comfort. Once you do that, you spend less time troubleshooting and more time enjoying a stable, adult appropriate vaping routine that fits your real life and supports responsible use in the UK.