Flavour holds up to the last puff
Really pleased with the order overall. Everything arrived as expected, well packed, fast dispatch.
MixThe Mad Blue Mix Lab Salts 10mg by Mix in Mad Blue at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.
Mix Lab Salts 10mg Mad Blue is a nicotine salt e-liquid from the Mix brand, sold in the standard UK 10ml bottle and filled at 10mg/ml (1%) nicotine strength. It is a refill liquid rather than a ready-made device, which means it is designed to be poured into a refillable pod kit, a pod system with a fill port, or any other low-power mouth-to-lung device that accepts nicotine salt liquid. If you are coming from single-use vapes, this is the format that replaces the throwaway habit: you keep the hardware and top it up from a bottle that costs a fraction of a new disposable.
The headline numbers are simple. One bottle holds 10ml of liquid, which is the maximum bottle size allowed for nicotine-containing e-liquid in the UK. At 10mg/ml, the full bottle contains about 100mg of nicotine in total. The UK nicotine ceiling for e-liquids, refill bottles and pod cartridges is 20mg/ml, and the same 20mg/ml cap applies to the disposable and prefilled products you may be moving away from. Choosing 10mg/ml puts this bottle at half the legal maximum, which suits a lot of people who want a lighter, smoother hit than a 20mg liquid gives.
Nicotine salts differ from the older freebase nicotine used in most large-bottle e-liquids. Salt nicotine is paired with an acid, which lowers the harshness of the throat hit and lets the liquid carry a satisfying amount of nicotine at lower strengths without the scratchy feel that freebase can have above about 6mg/ml. That is why salt liquids are the usual choice for small, low-wattage pod devices.
This page walks through what to expect from the liquid, how to match it to hardware, how to use and troubleshoot it, and where it sits against alternatives. It is written for adult UK vapers and former smokers, and it aims to be straightforward about limits as well as strengths. Vaping is widely regarded as far less harmful than smoking, but it is not risk-free, and nicotine is addictive. If you do not currently smoke or vape, this product is not for you.
Mad Blue sits in the blue fruit family of e-liquid flavours. In the UK market, a name that leads with blue usually points to a blue raspberry style profile: a sweet, slightly tart berry note with a candy or slush character rather than the cut-fruit realism of a strawberry or a mango. Many liquids in this family also add a light cooling element so the vapour feels crisp on the exhale. Mad Blue follows that general direction. Flavour descriptions are subjective, so treat what follows as a guide to the style rather than a guarantee of exact notes, and check the bottle label for any further detail from the manufacturer.
Here is how the flavour typically behaves across a vaping session when it is used in a suitable pod device.
Because this is a nicotine salt, the flavour is delivered at modest power. Pod devices usually run somewhere between about 8W and 25W, and salt liquids are formulated to taste good at those settings. You should not need to push the device hard to get flavour. If the taste seems thin, the cause is more often a tired coil or a half-empty tank than the liquid itself.
One practical point on sweetness. Dessert-style and candy-style fruit liquids carry more sweetener than a tobacco or a menthol liquid, and sweeteners leave residue on the coil. That is normal, but it means you will notice the flavour fade on an old coil sooner with a liquid like Mad Blue than you might with a lightly flavoured one. We cover coil care in the coil section below.
If you are new to blue flavours, the easiest way to judge whether you will like Mad Blue is to think about blue raspberry sweets, blue slush drinks and similar candy flavours. If you enjoy those, you are in the right area. If you prefer natural fruit tastes, a red fruit, citrus or apple liquid may suit you better, and the variant FAQ below explains how to swap.
With an e-liquid, performance depends on the pairing of liquid and device, so it helps to be concrete about what the liquid itself contributes. Nicotine salt liquids in this style are typically mixed with a roughly balanced propylene glycol (PG) to vegetable glycerine (VG) ratio. That balance carries flavour and nicotine cleanly through the wicking cotton of a pod coil and gives a reasonable throat hit without producing huge clouds. The exact ratio is printed on the label, and you should check it there, because it affects how the liquid wicks in your particular device.
For planning purposes, here is what a 10ml bottle at 10mg/ml typically delivers.
Throat hit at 10mg/ml is medium-low. It is noticeably softer than the same liquid at 20mg/ml, and it is firmer than a 5mg/ml or 6mg/ml liquid. Most people moving from light smoking, or from a lower-strength disposable, find that 10mg/ml gives enough sensation to feel satisfied without coughing. People coming from heavier smoking often find it a bit light at first and may prefer 20mg/ml, subject to the guidance in the nicotine strength section.
Vapour production is modest compared with sub-ohm vaping. That is by design. Salt liquids and mouth-to-lung pod devices produce a tight, cool puff that mimics the draw of a cigarette. If you want large clouds, a different type of liquid (higher VG, lower nicotine) and different hardware would be a better match.
Consistency from the first tank to the last is generally good as long as the coil is healthy. Where users report a drop in performance, it is nearly always connected to coil age, a loose pod connection, or air in the wick after a refill, all of which are covered in the troubleshooting section.
Because this is a liquid, build quality here means the bottle, the closure and the labelling rather than a casing and a board. UK nicotine e-liquid has to be sold in bottles of no more than 10ml, with a child-resistant closure and a tamper-evident seal, and Mix Lab Salts follows that format. The bottle is a squeezable plastic design with a narrow nozzle, which is the right shape for pod filling.
The points worth checking when your bottle arrives are straightforward.
Plastic bottles keep liquid stable provided you store them sensibly. Heat and direct sunlight degrade e-liquid over time, darkening it and flattening flavours, so keep the bottle in a cool, dry cupboard away from windows and radiators. Always store bottles upright, out of the reach of children and pets. Nicotine is toxic if swallowed, and spilled liquid on skin should be washed off with soap and water.
The squeeze action of the bottle matters more than it sounds. A bottle that is too stiff forces liquid out in a rush and floods the fill port, while one that is too soft is hard to control. A gentle squeeze with the bottle held at a slight angle, nozzle fully seated in the port, works well. If a drip forms at the nozzle after use, wipe it before closing the cap so the thread does not become sticky.
For long-term tidiness, wipe the bottle and cap threads after each fill, and keep the box or a small zip bag nearby for carrying. A sticky bottle in a bag is a common cause of leaks that people blame on the liquid when the real cause is residue on the neck.
An e-liquid has no battery of its own, so the battery and charging questions apply to the device you pour it into. This matters, because the right pairing makes the difference between a pleasant vape and a frustrating one. Mix Lab Salts is intended for low-power pod systems and similar mouth-to-lung devices. These devices usually have batteries in the 400mAh to 1,000mAh range, depending on how compact they are.
Most current pod kits charge over USB-C, and many support a pass-through of the charger while vaping. Charging times of 30 to 90 minutes are typical, depending on battery size and the charger. A few practical rules keep the battery healthy and safe.
At end of life, batteries and devices must not go in household rubbish or ordinary recycling, because lithium cells can start fires in bin lorries and recycling plants. In the UK, retailers that sell vaping products are required to offer take-back of waste vape equipment, and many local authority household waste recycling centres, as well as supermarkets and some convenience stores, have collection points for small electricals and batteries. Empty rinsed plastic bottles can generally go in household plastic recycling, but check your local council's rules because they vary.
The disposable vape ban in Great Britain, which has been in force since June 2025, is one reason refillable kits and bottles like this have become the standard route. Reusing a device and topping it up creates far less waste than binning a battery-powered unit every few days.
The coil is where the liquid becomes vapour, and the right coil choice is the biggest single factor in how Mad Blue tastes and how long a tank lasts. Nicotine salts are made for coils with higher resistance, because higher resistance means lower power, a cooler vape and a tighter draw. Here is how the common options compare.
For a sweet liquid like Mad Blue, a mesh or a good cotton coil in the 0.8 to 1.0 ohm area is a sensible starting point. If your device allows power adjustment, begin at the lowest end of the coil's recommended wattage range and increase in small steps. Running a coil above its range does not improve flavour; it scorches the cotton and shortens coil life.
Coil life is affected by sugar. Sweeteners caramelise on the coil as you vape, forming a film that dulls the taste. The signs of a tired coil are a muted flavour, a slightly burnt or toasty note, gurgling, or a vape that needs more power than before. When you see these, replace the coil or pod rather than pushing on. Many people find that rotating to a fresh coil as soon as flavour drops costs less than the lost enjoyment, and it avoids the unpleasant dry hit from a spent wick.
A simple habit helps: let the coil soak for five to ten minutes after each new fill, take shorter puffs with a pause between them, and avoid chain vaping. These steps reduce heat build-up and extend the coil life noticeably.
Picking a strength is the most important decision with a nicotine salt. The UK allows a maximum of 20mg/ml for e-liquids, and salt liquids are commonly sold at 5mg/ml, 10mg/ml and 20mg/ml. Mix Lab Salts 10mg Mad Blue is the middle option, and the following rough guide may help you decide. It is general information, not medical advice, and individual responses vary.
There is a useful rule for salts. Because they are smooth, it is easy to take in more nicotine than you notice, so a lower strength used frequently can deliver as much as a higher strength used sparingly. If you find yourself puffing constantly and feeling jittery, flushed, lightheaded or slightly nauseous, you are probably taking in too much, and either a lower strength or fewer, shorter puffs is the fix.
On the other hand, if you are vaping 10mg/ml and still reaching for cigarettes, or you vape continuously and cravings return fast, the strength may be too low for your level of dependence. Moving up to 20mg/ml is a reasonable step. The goal for most adults using vaping to quit smoking is to find a strength that stops cigarette use completely, then reduce over time at a pace that suits them. Local stop smoking services, available free through the NHS, can support this and often provide vaping starter advice.
One more point: because salt nicotine is absorbed efficiently, the strength figure does not translate directly to the freebase numbers you may remember. A 10mg/ml salt can feel more like a 12 to 18mg/ml freebase liquid in a pod device. Start with 10mg/ml if you are unsure, and adjust after a week or two of consistent use rather than after one session.
Finally, no strength is appropriate for people who have never smoked or vaped, for anyone under 18, or for those who are pregnant or breastfeeding unless advised by a healthcare professional.
Mix Lab Salts 10mg Mad Blue is aimed at a fairly specific group of adults, and it is worth being clear on both sides of that line.
Who it suits
Who should look elsewhere
It is also worth saying plainly that vaping is a tool, not a lifestyle upgrade. For smokers it can be a step towards quitting nicotine altogether. If your aim is to stop completely, consider combining it with behavioural support and a plan to step down in strength over time.
Filling a pod from a bottle is simple, but a careful process prevents most of the common faults. Follow these steps the first time and every time you refill.
For the best experience, draw slowly. With a mouth-to-lung device, the technique is to pull the vapour into your mouth for a second or two, then inhale it into your lungs, rather than inhaling directly. A slow, three to four second draw works well with salts. Short, rapid puffs can drag too little air through the coil and produce a hot, harsh vapour.
Some practical habits will improve your day-to-day experience.
Never add anything to nicotine salt liquid, such as extra flavour shots, nicotine boosters or other additives, and never refill a prefilled, non-refillable pod, as these are not designed for it.
Most problems with salt liquids come down to a handful of causes. Work through the relevant item before assuming the liquid is at fault.
If you notice an unusual smell, a change in the colour of the liquid, or an unexpected reaction such as a rash, stop using the bottle and contact us. Any suspected adverse effects of a vaping product can also be reported to the MHRA through the Yellow Card scheme.
Value with a 10ml nicotine salt is best judged by cost per puff and by the cost of the hardware you use it in, not simply by the bottle price. Here is how to think about it in practice.
It helps to compare against the main alternatives in plain terms.
The biggest saving factor is how quickly you replace coils. A fresh coil that you replace as soon as flavour dips keeps liquid use efficient, and a poorly maintained coil makes you vape more to get the same effect. Storing the bottle properly and avoiding leaks also prevents waste, because every spilled ml is money lost.
Finally, think about the cost of the alternative. Smoking is expensive, and a switch to vaping, if it replaces cigarettes completely, normally saves a significant amount over a year. That is the strongest value argument for this product, as long as it is genuinely used instead of smoking and not alongside it.
Mad Blue is one of many blue fruit nicotine salts on the UK market, so a fair comparison is worth setting out. We have not run laboratory comparisons between brands, so what follows reflects the general characteristics of each format and style rather than precise measurements.
On balance, here is where Mad Blue sits. Its strengths are a straightforward candy-fruit profile, the 10mg/ml mid-strength option, a compact 10ml bottle that works with common pod kits, and a price in the usual range for the format. Its limits are equally clear: it is not a high-VG cloud liquid, it will not suit those who dislike sweet flavours, and it does not offer the ultra-low strengths of the very lightest users. A fair view is that it is a dependable, ordinary choice in a crowded category, and its fit depends mostly on whether you like the flavour.
If you are unsure, a practical approach is to buy two different flavours in the same strength, vape one tank of each, and keep the one you reach for. Because bottles are small and inexpensive, a trial costs little. Remember to dispose of old pods, batteries and devices at a proper vape recycling drop-off point rather than in the bin.
| Brand | Mix |
|---|---|
| Product type | E-Liquid |
| Nicotine strength | 20mg |
| Available flavours | 1 (Mad Blue) |
| Price | £1.05 |
| Availability | In stock — same-day dispatch |
| Compliance | UK TPD-compliant, MHRA-registered |
Mix e-liquids and devices cover a value-tier range of fruit and menthol builds.
For many adults who smoke fewer than around 10 cigarettes a day, or who find 20mg/ml too harsh, 10mg/ml is a sensible mid-point. Heavier smokers may prefer 20mg/ml, which is the UK legal maximum for e-liquids. Start at 10mg/ml if unsure, and adjust after a week or two.
The liquid itself has no battery, so charging applies to your pod kit. Most use USB-C and take roughly 30 to 90 minutes to charge. Use the supplied cable and a standard 5V plug, and never leave a charging device unattended or on soft furnishings.
Yes. Mad Blue is one of several flavours in the Mix Lab Salts range, and many are offered in more than one nicotine strength. Empty and rinse the pod before switching flavours so the old liquid does not mix with the new one, and replace the coil if the previous flavour was strong.
It depends on your device and habits. A moderate user in a typical 0.8 to 1.2 ohm pod kit often gets four to eight days, light users may stretch it to a week or two, and heavy users may finish it in two to three days. As a rough planning figure, 10ml is around 1,500 to 2,500 puffs.
Refilling from a bottle is generally cheaper per puff than buying disposables, once you account for the cost of coils and a one-off device. Single-use disposables have also been banned from sale in Great Britain since June 2025, so refillable kits and bottles are now the usual route.
It is for adult smokers and vapers only. Do not buy it if you are under 18, if you have never smoked or vaped, or if you are pregnant or breastfeeding unless a healthcare professional has advised it. People with heart conditions should ask their doctor first.
No. Nicotine salts are made for low-power, higher-resistance mouth-to-lung devices, typically 0.8 to 1.2 ohm at around 8 to 25W. A sub-ohm tank would use the liquid quickly and give a much harsher, stronger hit. Do not try to refill a disposable, as these are not designed for it.
We deliver to UK addresses, with the current delivery options and prices shown at checkout. Because nicotine products are age-restricted, you may be asked to confirm that you are 18 or over when ordering or on delivery. Please see our delivery page for the latest timings.
Contact us as soon as possible with your order number and photos of the bottle and packaging, and we will arrange a replacement or refund as set out in our returns policy. For hygiene and safety reasons, opened e-liquid generally cannot be returned unless it is faulty.
Keep the bottle upright in a cool, dry place away from sunlight and out of reach of children and pets. Empty, rinsed plastic bottles can usually go in household plastic recycling, but check your council. Used pods, devices and batteries should go to a vape recycling drop-off point, not the household bin.
Royal Mail Tracked 24 (Next-Day): £1.99, FREE on orders over £20.
DPD Next Working Day: £3.99 (£2.99 over £20), FREE over £100.
Same-day dispatch on orders placed before 4pm Mon-Fri. See our delivery page for full details.
Really pleased with the order overall. Everything arrived as expected, well packed, fast dispatch.
Ordered Wednesday evening, arrived Thursday morning. Everything sealed, genuine, exactly what I expected.
Taste is proper — no chemical aftertaste or anything. Just clean flavour throughout. Love it.
Been looking for something like this for ages. Finally found a brand that doesn't disappoint.
Switched from a well-known brand and this is actually better, especially for the price. Will reorder.
Delivery was super fast and the product is genuine. I've had fakes before so this was a relief.
Mix
Mix
Mix
Angel
Angel
Bar Series
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