How to Use Nic Shots Properly

Shortfill bottles catch a lot of people out for one simple reason - the flavour is ready, but the nicotine is not. If you are wondering how to use nic shots, the good news is that it is straightforward once you know what bottle size you have, how much space is left, and what strength you actually want to vape.

Nic shots are small bottles of unflavoured nicotine e-liquid, usually 10ml, designed to be added to larger nicotine-free shortfills. In the UK, they are the standard way to turn a 0mg shortfill into a nic-containing e-liquid without buying separate bottles of ready-mixed juice. For regular vapers, especially anyone moving from disposables to refillable kits, they are one of the easiest ways to keep costs down while still getting the nicotine hit that suits them.

What nic shots actually do

A nic shot is not there to change the flavour profile. Its job is to add nicotine to a larger bottle that has been deliberately left with spare room. Most commonly, a 50ml shortfill comes in a 60ml bottle, leaving 10ml of space for one nic shot. Add that 10ml shot and you end up with 60ml of e-liquid at a lower nicotine strength than the shot itself.

This is where many new buyers get confused. If the nic shot says 18mg or 20mg, that does not mean your final bottle will be 18mg or 20mg. Once mixed into the shortfill, the nicotine is diluted across the full bottle. One 18mg nic shot added to 50ml of shortfill usually gives you 3mg overall. One 20mg nic shot added to 50ml usually works out at around 3.3mg.

That makes nic shots especially popular with sub ohm vapers and anyone using higher-powered refillable kits. If you are after a much stronger nicotine level, nic salts or pre-mixed 10ml liquids are often the better fit.

How to use nic shots in a shortfill bottle

If you want the practical version of how to use nic shots, it comes down to four steps: check the bottle size, add the right number of shots, shake properly, and let the liquid settle briefly before filling your device.

Start by reading the bottle. A 50ml shortfill in a 60ml bottle is built for one 10ml nic shot. A 100ml shortfill in a 120ml bottle is built for two. Some larger bottles vary, so do not assume. The label or product description should tell you the intended final size.

Next, remove the bottle cap and nozzle. On most shortfills, the nozzle is a push-fit cap. You can usually ease it off with your thumb or a bottle tool. Add the nic shot slowly to avoid spills, then push the nozzle back on firmly and screw the cap down tight.

Now shake the bottle well. Not for two seconds and done - give it a proper shake for at least a minute. You want the nicotine and flavouring evenly distributed through the VG/PG mix. If it is a high-VG liquid, it may be thicker and need a bit longer.

After that, leave it for a short while. You do not need to steep it for days in most cases, but giving it 10 to 30 minutes can help the mix settle, especially if the liquid is thick or chilled from storage.

How many nic shots do you need?

This depends on both the bottle size and the strength you want to reach. The most common setup is simple: one nic shot in a 50ml shortfill gives a low-strength everyday vape, usually around 3mg. Two nic shots in a 100ml shortfill do much the same.

If you want 6mg in a 50ml shortfill, one standard 10ml space is not enough. You would need extra room in the bottle, or you would need to pour some liquid out before adding more nicotine. That is possible, but it is less convenient and can throw off the flavour balance if you guess rather than measure.

For many vapers, 3mg is the sweet spot with shortfills because it works well in sub ohm kits and keeps the inhale comfortable. If you are using a lower-powered pod kit and want a stronger throat hit or faster nicotine satisfaction, shortfills with nic shots may not be the most efficient route.

A quick strength example

If you add one 10ml 18mg nic shot to 50ml of 0mg shortfill, you get 60ml of e-liquid at 3mg. If you add two 10ml 18mg nic shots to 100ml of shortfill, you get 120ml at 3mg. The same logic applies across larger sizes.

Using 20mg nic shots nudges that final figure slightly higher, but not massively. That small difference matters to some users and makes little difference to others. It depends how sensitive you are to nicotine strength and what device you are using.

Choosing the right nic shot for your device

Not all nic shots feel the same once mixed. The two main differences are nicotine type and VG/PG ratio.

Standard freebase nic shots usually suit shortfills aimed at sub ohm vaping. They pair well with higher-VG e-liquids and more powerful kits from brands like Vaporesso, Geekvape and Oxva. The draw is looser, vapour production is higher, and lower nicotine strengths tend to feel more balanced.

Nic salt shots are smoother on the inhale, even at higher strengths. These can work well if you want a softer throat hit, but you still need to think about the final mixed strength. A smooth nic salt shot does not automatically make a low-strength shortfill setup feel stronger - it just changes how the nicotine is delivered.

The VG/PG ratio matters too. If your shortfill is high VG, adding a 50/50 nic shot will thin it slightly. Usually that is not a problem, but if you are very particular about vapour density or coil performance, it is worth matching the shot to the liquid where possible. High-VG nic shots are often the cleaner option for sub ohm liquids.

Common mistakes when using nic shots

The biggest mistake is adding a nic shot to the wrong type of e-liquid. Nic shots are for shortfills with spare room, not full bottles with no capacity left. If you force extra liquid into a bottle that is already full, you will either spill it or have to decant it into another container.

Another common issue is choosing the wrong strength for the setup. A 3mg shortfill mix can feel weak if you are coming straight from disposables or strong nic salt pod liquids. That does not mean the nic shot has failed. It usually means the format is different from what your body is used to.

Poor shaking is another one. If the bottle is not mixed properly, the nicotine may not be evenly distributed. Early refills can feel weaker, and later ones stronger. That is easy to avoid with a thorough shake.

It is also worth keeping expectations realistic around flavour. Adding a nic shot slightly dilutes the shortfill, because you are increasing the total volume with unflavoured liquid. In most decent shortfills, that drop is minor. But if you are very flavour-focused, you may notice a small change.

Is a nic shot setup right for you?

That depends on how you vape. If you use a refillable sub ohm kit and prefer bigger bottles, nic shots make a lot of sense. They are practical, cost-effective, and give you more choice in flavours than many ready-mixed nicotine options. They are also a solid route for adult vapers moving away from disposable-style products and into reusable devices.

If you use a small pod kit and want 10mg or 20mg nicotine, shortfills plus nic shots are usually not the simplest answer. A 10ml nic salt e-liquid is often the better buy because it is ready to use and matched to lower-power devices.

This is where product choice matters more than chasing a one-size-fits-all answer. The best setup is the one that gives you enough nicotine satisfaction, works with your device, and does not make refilling harder than it needs to be.

How to use nic shots safely

Keep nic shots away from children and pets, avoid skin contact where possible, and wash off any spills promptly. Store bottles upright in a cool, dry place out of direct sunlight. If you are mixing more than one bottle at a time, label things clearly so you do not lose track of what has already been nicced up.

It also helps to mix over a sink or a wipe-clean surface. Nicotine liquids are easy enough to handle, but they are not something you want on carpets, sofas, or worktops you share with food prep.

For most vapers, learning how to use nic shots is less about complicated maths and more about matching the bottle, the strength and the device. Once you get that part right, the process becomes second nature - and usually a cheaper, more flexible way to vape the flavours you actually want.