What Is a Nicotine Salt
Nicotine occurs naturally in tobacco leaves as a chemical salt, a stable compound formed when nicotine bonds with naturally occurring acids in the plant. In that raw form, it is not easily absorbed by the body at vaping temperatures.
Modern nic salt e-liquids recreate a similar structure by combining extracted nicotine with an organic acid, most commonly benzoic acid. This lowers the pH of the nicotine, making it smoother to inhale and far easier for the body to absorb. The result is a nicotine formulation that remains comfortable to vape even at higher strengths, which is why it became the standard choice for pod kits and a great recommendation for anyone switching from cigarettes.
What Is Freebase Nicotine
Freebase nicotine is the purest, unadulterated form of nicotine. It was developed by tobacco manufacturers years ago as a way to increase how efficiently the body absorbs nicotine during combustion. The "freebase" process uses ammonia to strip away the acid component of naturally occurring nicotine salts, raising the pH and producing a highly alkaline, highly potent form of nicotine.
It absorbs quickly, but it comes with a significant practical drawback. At higher concentrations, that alkalinity creates a pronounced throat hit that many vapers find uncomfortable, and the sensation gets worse the higher the strength goes. The flavour also begins to dull, sometimes leaving a peppery finish above 12mg.
Nic Salt vs Freebase
| Feature | Nic Salt | Freebase |
|---|---|---|
| Throat hit | Smooth even at high strengths | Harsher above 12mg |
| Typical bottle size | 10ml | 10ml |
| Ideal devices | Pod kits, MTL pen kits | Sub-ohm, higher wattage kits |
| Common VG/PG ratio | 50/50 | 50/50 (10ml), or 70/30 shortfills |
| Flavour at high strength | Clear, well-defined | Can become muted or peppery |
Throat Hit
Freebase nicotine becomes progressively harsher as the strength increases. Most vapers find 18mg or 20mg freebase uncomfortable, while some find it unvapeable. Nic salts, with their lower pH, remain smooth even at the UK legal maximum of 20mg/ml. You can use a strength that actually satisfies your cravings without fighting through a harsh inhale every time.
Absorption
Both forms are absorbed into the bloodstream quickly, but nic salts, being closer in chemical structure to the nicotine found naturally in tobacco, tend to satisfy cravings faster. The Nicotine & Tobacco Research confirmed that nicotine salt formulations resulted in higher nicotine delivery compared to freebase at the same stated concentration. That efficiency is a significant reason ex-smokers find nic salts easier to rely on during the early transition away from cigarettes.
Strength
Freebase e-liquid suits lower strengths, typically 3mg to 12mg, and pairs well with sub-ohm devices where you're taking large, airy inhales at higher wattage. Nic salts suit 10mg and 20mg in pod kits and mouth-to-lung (MTL) devices, where the draw style more closely mimics smoking.
A common question: are nicotine salts better than freebase, and the honest answer depends on your vaping style and nicotine needs. For vapers who prefer lower strengths and sub-ohm devices, freebase remains a practical and well-suited option. For those who need higher strengths in a compact, low-wattage setup, nic salts offer a more comfortable route to the same cap.
What Are Bar Salts
Bar salts are a subcategory of nic salt e-liquid that emerged from the popularity of disposable vapes. The name comes from the disposable "bar" format that dominated the market before the UK's disposable vape ban came into effect on 1 June 2025, following the Environmental Protection (Single-use Vapes) (England) Regulations 2024.
They're formulated to replicate the bold, sweet, and often iced flavour profiles that made disposables so popular in a TRPR-compliant, 10ml refillable format. Bar salts typically use double-concentrated flavourings, which give them a more intense taste than standard nic salt e-liquids.
In terms of nicotine type, bar salts are nic salts. The same smoothness applies, the same device requirements apply, and the same UK legal strengths apply. The distinction is flavour style and concentration.
For vapers coming from disposables, bar salts are usually the most natural first step into refillable vaping. You get the familiar flavour experience, the smoothness of nic salts, and considerably better value per millilitre than any disposable offered.
Explore the range
Browse our nicotine salt e-liquid range to see what's available.
What Devices Should I Use With Nic Salts
Nic salts should be used in low-wattage, mouth-to-lung devices. Pod kits and pen-style starter kits are the right categories, as most of these use coils rated at 0.8ohm or above, which suits the thinner 50/50 PG/VG ratio of nic salt e-liquids and delivers a controlled, MTL-style draw.
Nic salts behave very differently in sub-ohm devices. These kits produce a much higher volume of vapour per draw. Paired with a 20mg nic salt, a single pull could deliver far more nicotine than intended, more than would be comfortable, and more than most people would expect. The thinner 50/50 liquid would also wick too fast through a sub-ohm coil, leading to burnt hits and a coil that wears out well before it should.
A practical rule: if the coils on your device are rated at 1.0ohm or above, or if it's a standard MTL pod, you're on the right track for nic salts. Some newer pod kits with RDTL (restricted-direct-to-lung) coils, rated between 0.4 and 0.8ohm, can also work well as long as the device runs at low wattage.
Picking your first kit
If you're choosing your first kit, our guide to the best starter vapes covers what to look for.
What Is a Nic Salt Shot
A nic salt shot is a small, flavourless bottle of nicotine salt solution, typically 10ml at 18mg or 20mg strength, designed to be added to a nicotine-free e-liquid to bring it up to your chosen strength. They work on the same principle as standard freebase nicotine shots, but use nic salt nicotine instead of freebase. That means the same smoothness you'd get from a ready-made nic salt e-liquid carries through into whatever you mix them with.
Nic salt shots are most commonly used with shortfill e-liquids, which are larger, nicotine-free bottles that are sold with space left at the top specifically for adding a shot. A 50ml shortfill with one 10ml nic salt shot, for example, gives you 60ml of e-liquid at a strength determined by the shot's concentration and the dilution ratio.
How Much Nic Salt to Add to a Shortfill Bottle
The standard ratio is one 10ml nic salt shot per 50ml of space in a shortfill, giving you 60ml of finished e-liquid. Most UK nic salt shots are 18mg, so one shot in a 50ml shortfill brings the finished mix to around 3mg. Two shots in a 100ml shortfill produce roughly the same result at 120ml.
Because nic salts absorb more efficiently than freebase at the same stated concentration, a 3mg nic salt mix will feel stronger than a 3mg freebase mix. If you are new to nic salts, start lower than you think you need and adjust.
Work out the maths
Our e-liquid mixing calculator works out the exact ratios for any bottle size.
The Benefits of Nic Salts
The smoothness of nic salts is what most people notice first. But several other practical advantages explain why they've become the preferred nicotine format for a large portion of UK vapers.
Fast Craving Relief
Nic salts reach the bloodstream fast, and the craving-relief effect kicks in quicker than it does with freebase. That speed closely mirrors what a cigarette delivers, which is a significant reason ex-smokers find nic salts easier to rely on during the transition. With lower-strength freebase, that point often takes longer to reach, and some people never quite get there, which means they keep vaping more to compensate.
High Strengths Without Discomfort
Most people switching from cigarettes need 20mg to manage cravings effectively in the early stages. At that strength, freebase is uncomfortable for almost everyone. But nic salts at 20mg are smooth enough to use properly and strong enough to satisfy nicotine cravings, which makes them the practical choice for anyone in the early stages of quitting, not just the strongest options on paper.
What Nicotine Salt Strengths Are Available in the UK
Under the Tobacco and Related Products Regulations 2016 (TRPR), enforced by the MHRA, all nicotine-containing e-liquids sold in the UK are capped at 20mg/ml. This applies equally to nic salts and freebase, and it covers the 10ml bottles that nic salt e-liquids are sold in.
Common UK strengths for nic salts are 5mg, 10mg, and 20mg, with some ranges also offering 15mg. A general guide to matching strength to habit:
Light or social
Suited to light or social smokers, or those who are well along the way to cutting down.
Moderate
A good starting point for moderate smokers, or anyone who wants satisfying nicotine without going straight to the maximum.
Heavy / ex-disposable
The right choice for heavier smokers, or anyone coming from a 20mg disposable who wants an equivalent experience.
Ready to Try Nic Salts?
If you are switching from cigarettes, moving away from disposables, or finding that your current freebase setup is not satisfying cravings quickly enough, nic salts are worth trying. Browse our nic salt e-liquid range to find a flavour and strength that suits you.