What Is Vape Juice Made Of? Ingredients Explained

If you've ever turned a bottle of e-liquid around and wondered what's actually inside it, you're asking exactly the right question. Understanding what is vape juice made of helps you choose better products, match your e-liquid to your device, and know what you're inhaling with every puff.

The short answer: vape juice is made from four core ingredients. Vegetable Glycerine (VG), Propylene Glycol (PG), food-grade flavouring concentrates, and nicotine (optional). That's it. Every bottle of e-liquid, whether a 10ml nic salt or a 100ml shortfill, contains some combination of those four ingredients. This guide breaks down each one clearly so you know exactly what you're vaping. You can explore the full vape juice range at Vaping 101 to find every format and flavour covered in this guide.

Ingredient 1: Vegetable Glycerine (VG)

VG is the ingredient responsible for producing the vapour cloud when you vape. It's a thick, clear, slightly sweet liquid derived from vegetable fats, most commonly soybean, coconut, or palm oil. You'll find VG used widely in food products, pharmaceuticals, and cosmetics, so it's a well-understood and safe ingredient.

In vape juice, VG serves as the base carrier liquid alongside PG. The higher the VG percentage in your e-liquid, the thicker the liquid, the denser the vapour cloud, and the smoother the throat hit. This is why high VG e-liquids are the format of choice for sub-ohm vapers chasing clouds and flavour intensity.

What VG/PG Ratio Should You Use?

The ratio of VG to PG in your e-liquid determines how it performs in your device. Here's a straightforward breakdown:

• 50/50 VG/PG: balanced throat hit and flavour, thinner liquid that suits pod vapes, starter kits, and MTL tanks
• 70/30 VG/PG: smoother throat hit, denser vapour, suits advanced vape kits and sub-ohm tanks
• 80/20 VG/PG: maximum cloud production, very smooth inhale, for high-powered direct-to-lung setups

Getting this ratio wrong is one of the most common beginner mistakes. High VG liquid in a pod kit won't wick properly and causes dry hits. The full VG and PG ratios guide covers exactly how each ratio affects your vape. You can also buy base mix VG/PG separately if you want to make your own blends. Check the what is 50/50 e-liquid guide for a clear explanation of how balanced ratios work in practise.

Ingredient 2: Propylene Glycol (PG)

PG is the thinner of the two base liquids in e-juice. It's a clear, odourless liquid derived from petroleum and it appears in countless everyday products including food additives, inhalers, and cosmetics. Like VG, it has a well-established safety profile for inhalation.

In vape juice, PG carries the flavour compounds. It binds to flavouring concentrates more effectively than VG, which is why higher PG ratios produce sharper, more pronounced flavour. PG also produces the throat hit sensation. The higher the PG content, the stronger the throat hit, which many ex-smokers specifically want because it mimics the sensation of smoking a cigarette.

The 50/50 e-liquid range uses equal parts VG and PG to balance cloud production with flavour delivery and throat hit, making it the most versatile format for beginners and vapers using lower-powered devices.

Ingredient 3: Flavouring Concentrates

Flavouring concentrates are what make each vape juice taste the way it does. These are food-grade flavouring compounds, the same class of additives used in the food and beverage industry. Manufacturers blend multiple individual flavour compounds together to build complex flavour profiles.

Creating a finished e-liquid flavour takes serious expertise. Brands like Dinner Lady, Vampire Vape, Doozy Vape, and Fantasi invest heavily in flavour development, testing recipes across multiple batches before releasing a finished product. Premium brands use higher-quality flavouring compounds and tighter quality control, which is why their e-liquids taste noticeably more accurate and consistent.

Common Vape Juice Flavour Categories

Understanding what is vape juice made of from a flavour perspective helps you find what you'll enjoy. The main flavour categories available at Vaping 101 include:

• Fruit: tropical, citrus, berry, melon, stone fruit, and exotic blends from brands like Bar Juice 5000 and Riot Squad
• Dessert: custard, cake, cookie, doughnut, and pastry profiles from brands like Dinner Lady
• Menthol and ice: cooling mint and icy fruit blends that suit MTL vapers
• Tobacco: classic RY4, creamy tobacco, and blended tobacco profiles for ex-smokers
• Drinks: fizzy soda, coffee, cocktail, and energy drink inspired options from brands like Fantasi
• Disposable-inspired: exact flavour matches to popular bar-style disposables, available as nic salts and disposable-inspired juice

The flavour compounds in vape juice are not burned. They're heated to a vapour point, which is a fundamentally different process to combustion and why vaping doesn't produce the same harmful by-products as smoking.

Ingredient 4: Nicotine (Optional)

Nicotine is an optional ingredient in vape juice. Many vapers choose 0mg nicotine-free options, especially sub-ohm vapers who prioritise flavour and cloud production. For vapers making the switch from cigarettes, nicotine is typically included.

There are two main forms of nicotine found in e-liquid, and understanding the difference is one of the most useful things a new vaper can learn.

Freebase Nicotine

Freebase nicotine is the traditional form of nicotine used in vape juice for years. It's chemically altered to increase its potency and delivers a stronger throat hit at higher concentrations. Freebase e-liquids are available in strengths from 3mg up to 18mg and suit vapers who prefer a more pronounced throat sensation that resembles the feeling of smoking.

The freebase vs nic salts guide at Vaping 101 explains the chemistry behind both forms clearly. Freebase nicotine suits vapers on starter kits and pod vapes who want a traditional throat sensation. Vampire Vape is one of the leading UK brands producing freebase e-liquids in multiple strengths.

Nicotine Salts (Nic Salts)

Nic salts are a modified form of nicotine. Manufacturers combine freebase nicotine with benzoic acid, which lowers the pH of the liquid. The result is a significantly smoother throat hit, even at 20mg strength, and faster absorption into the bloodstream.

This is what makes nic salts so popular for ex-smokers switching from cigarettes. The nicotine satisfies cravings quickly without the harshness of freebase at equivalent strengths. The why nic salts are smoother guide explains the science in detail.

Popular nic salt brands at Vaping 101 include Bar Juice 5000, Elfliq, and Dinner Lady nic salts. All are available in the 4 for £9.50 nic salt deal. For a full breakdown of the best options across brands, the best nic salt brands guide covers all the top choices in detail.

Are There Any Other Ingredients in Vape Juice?

This is a natural follow-up when exploring what is vape juice made of. The four ingredients above cover the essentials for almost every e-liquid on the market. Some formulations may include trace amounts of distilled water to adjust viscosity, though this is not standard across all brands.

What vape juice does not contain is just as important to understand. Unlike cigarettes, e-liquid contains no tobacco leaf, no carbon monoxide, and none of the thousands of harmful combustion by-products produced when tobacco is burned. The premium vape juice guide covers quality differences between brands and what separates premium formulations from standard options.

All e-liquids sold at Vaping 101 are TPD-compliant. This means they meet the UK Tobacco Products Directive standards for ingredients, labelling, nicotine limits, and bottle size. TPD compliance guarantees that every bottle has been tested and declared safe for its intended purpose. You can read about the difference between formats in the nic salts vs nic shots guide for a practical comparison that covers ingredients, absorption, and device compatibility side by side.

How Is Vape Juice Made?

Now that you know what is vape juice made of, understanding the production process adds useful context. Manufacturers combine VG, PG, flavouring concentrates, and nicotine (if included) in precisely measured ratios. The mixing process must be thorough to ensure even distribution of all components, particularly the nicotine.

Premium manufacturers use pharmaceutical-grade VG, PG, and nicotine, which undergoes rigorous purity testing before use. Food-grade flavouring concentrates are sourced from specialist flavour houses and tested for vapour compatibility before being incorporated into recipes. Quality control at this level is what separates brands like Dinner Lady, Vampire Vape, and Doozy Vape from lower-quality alternatives.

Steeping is another part of the process worth knowing about. Some flavouring compounds need time to fully bond with the VG/PG base after mixing. Manufacturers steep their recipes for a set period before bottling, which is why premium e-liquids often taste more rounded and developed than budget options that skip this stage.

If you want to create your own blend at home, the how to mix e-liquid guide walks through the process clearly. The base mix collection at Vaping 101 stocks pharmaceutical-grade VG/PG bases for DIY vapers. For a ready-made premium experience, the USA vape juice collection showcases brands that have taken flavour craftsmanship the furthest.

What Format Does Vape Juice Come In?

Understanding what is vape juice made of also means knowing which format suits your device. The ingredients are the same across all formats, but the VG/PG ratio and nicotine type differ significantly between them.

The main formats available at Vaping 101 are:

• Nic salts: 10ml bottles with salt nicotine at 10mg or 20mg, 50/50 VG/PG ratio, for pod kits and MTL devices
• 50/50 e-liquids: balanced VG/PG ratio in both 10ml ready-to-vape and shortfill formats, suits most MTL devices
• Shortfills: large nicotine-free bottles (50ml, 100ml, 200ml) in 70/30 or 80/20 VG ratios for sub-ohm vaping
• High VG e-liquids: 70/30 or 80/20 VG/PG ratio shortfills designed specifically for cloud production in sub-ohm devices

The shortfill explained guide covers how the shortfill format works in detail, including how to add nicotine shots correctly.

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