🚚 Free UK delivery over £20✦⚡ Same-day dispatch before 4pm✦⭐ Rated 4.8/5 by 12,000+ UK vapers✦🔒 Age-verified checkout · 18+✦✅ 100% genuine, TPD-compliant stock✦💧 5 for £10 nic salts✦💨 3 for £10 prefilled pods✦🎁 Buy 2 for £20 · big-puff kits✦📦 Discreet plain packaging✦💷 Multibuy bundles across the store✦🚚 Free UK delivery over £20✦⚡ Same-day dispatch before 4pm✦⭐ Rated 4.8/5 by 12,000+ UK vapers✦🔒 Age-verified checkout · 18+✦✅ 100% genuine, TPD-compliant stock✦💧 5 for £10 nic salts✦💨 3 for £10 prefilled pods✦🎁 Buy 2 for £20 · big-puff kits✦📦 Discreet plain packaging✦💷 Multibuy bundles across the store✦
Blue Slush Ice Double Brew Nic Salts 10ml 20mgDouble
By DOUBLE

Blue Slush Ice Double Brew Nic Salts 10ml 20mg

★★★★★ 4.8 Read all 202 reviews
5,482 sold in the last 30 days
£1.10
In Stock · Ships Today
⏱Order within — for same-day dispatch (Mon-Fri before 4pm)
📦For delivery tomorrow with Royal Mail Tracked 24

Key features

  • 50/50 PG/VG. Ideal for pod kits & MTL
  • Smooth nic salt for a fast, satisfying hit
  • Flavour: Blue Slush Ice
  • Available in 20mg
  • 100% genuine, UK-compliant stock
  • Fast, tracked UK delivery
🚚Free Next Day DeliveryOn orders over £20
💬Questions?Contact our UK team
🔒100% GenuineAge-verified checkout

Product Highlights

Key specs at a glance
💧20mgNic Strength
🍬1+Flavour
🏷️DoubleBrand
📦E-LiquidFormat
🧪20mg/mLNic Salt

Vape Shop Online's Verdict on the Blue Slush Ice Double Brew Nic Salts 10ml 20mg

What our data says
Popular ChoiceMarket signal
5,308Sold last 30 days
4.8 / 5Avg customer rating
202Verified reviews
TPD-compliantUK / MHRA registered
In stock todayDispatch status

Overview

The Blue Slush Ice Double Brew Nic Salts 10ml 20mg by Double in Blue Slush Ice at 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Double Brew Blue Slush Ice 10ml 20mg Nic Salt: Product Overview

Double Brew Nic Salts Blue Slush Ice is a 10ml bottle of nicotine salt e-liquid at 20mg/ml (2% nicotine), which is the highest strength that can legally be sold in the UK. It is a refillable-format liquid, meaning you pour it into the pod or tank of a compatible vape kit rather than puffing on a sealed, pre-filled device. The flavour is a blue, fruit-forward slush with a cold finish, aimed at adult vapers who like sweet and chilled profiles and who want a smooth nicotine delivery at low power.

This page is a practical, honest guide to what the bottle is, what it is not, which devices suit it, how it behaves in daily use and where it sits against alternatives. It is written for UK buyers, so the regulatory background (strength caps, bottle sizes, age checks and disposal rules) is included where it affects your decision.

Quick facts at a glance:

  • Product: Double Brew Nic Salts, Blue Slush Ice flavour
  • Bottle size: 10ml, the maximum size allowed for nicotine e-liquid in the UK
  • Nicotine strength: 20mg/ml, which equals 2%, the UK legal ceiling
  • Nicotine type: nicotine salt, designed to feel smoother than freebase nicotine at the same strength
  • Total nicotine per bottle: 200mg (10ml multiplied by 20mg/ml)
  • Best suited to: pod kits and low-wattage mouth-to-lung devices
  • Not suited to: high-power sub-ohm tanks, and anyone who does not already use nicotine
  • Age restriction: 18+ only, with age verification on purchase and delivery

It is worth being clear about the format early, because the UK market has changed a lot. Single-use disposable vapes can no longer be sold in the UK following the ban that came into force on 1 June 2025, and even before the ban, disposables were limited to 20mg/ml and a 2ml tank. A 10ml nic salt bottle is the legal, refillable route that gives you five times the liquid of a typical 2ml disposable, a choice of devices and a much lower waste footprint, because you keep the hardware and only replace pods or coils.

The rest of this guide covers the flavour in detail, nicotine strength, performance, build quality, the devices that work best, charging and battery care, how to fill and use it, who should and should not buy it, troubleshooting, value for money, honest comparisons and storage and recycling. If you only want the short version: it is a sweet, cooling blue slush salt that suits adult smokers switching to vaping and runs best in a pod device at roughly 8 to 15 watts.

Flavour Profile: Blue Slush With an Ice Finish

The name tells you most of what to expect. Blue Slush Ice sits in the sweet-and-cold corner of the fruit e-liquid category. In vaping, a blue slush flavour is usually built around a sweet blue-fruit note in the blue raspberry family, softened with a syrupy, slightly tart character that imitates a frozen slush drink. The Ice part of the name refers to a cooling agent added to the flavour, which gives a fresh, chilled sensation on the exhale instead of an actual minty taste.

Here is how the flavour typically unfolds across a single puff, so you know what you are buying:

  • On the draw: a sweet, candy-like blue fruit note arrives first, with a light tartness that stops it feeling flat or cloying.
  • Mid-puff: the slush element comes through as a syrupy, chilled sweetness, similar to the sugary fruit syrups used in frozen drinks.
  • On the exhale: the ice effect rises, cooling the back of the throat and the nose without turning the whole puff into a menthol hit.
  • Aftertaste: a clean, sweet-cool finish that fades fairly quickly, which makes it easy to vape throughout the day without the flavour lingering heavily.

Cooling intensity is the main variable people differ on. Blue Slush Ice is a chilled flavour rather than an extreme one, so most vapers find it comfortable, but if you are sensitive to cooling agents you may notice a tingling sensation in the throat after several puffs in a row. If you prefer your fruit flavours with no cold effect at all, a non-ice blue flavour from a similar range will suit you better.

How you vape also shapes how the flavour tastes. At lower wattage the liquid vaporises more gently, so you get a cooler, lighter vapour where the fruit and the ice are well balanced. Push the power higher and the sweetness becomes warmer and heavier while the cooling effect fades, so a lot of people settle on the lower half of their device power range for this style of flavour.

Like any sweet e-liquid, the flavour can fade over a few days of constant use. This is usually vaper's tongue (flavour fatigue) rather than a fault in the bottle. If Blue Slush Ice seems to lose punch, switch to a different flavour for a day, drink some water, or try a menthol or tobacco liquid briefly. The blue slush taste normally returns at full strength.

Finally, remember that this is a single-flavour bottle with no tobacco, cream, dessert or menthol layers. That keeps the profile clear and easy to describe, and it also means there is little to hide behind: if you do not enjoy sweet blue fruit flavours, this will not become your favourite just because it is cold.

Nic Salt Explained: Is 20mg the Right Strength for You?

Nicotine salts are a form of nicotine bonded with an acid, commonly benzoic acid, which lowers the pH of the liquid. The practical effect is that the nicotine feels noticeably smoother in the throat than the same strength of freebase nicotine, so you can use a higher concentration without the harsh scratch you would get from 20mg freebase. The salt form is also absorbed fairly quickly, which is why many people moving away from cigarettes find it more satisfying at low power than traditional freebase e-liquid.

The 20mg/ml strength in this bottle equals 2% nicotine. That is the maximum allowed in UK-sold e-liquids and it is also the cap that applied to disposables before they were banned. It is a strong liquid, and you should treat it as such. Here is a rough guide to choosing a strength, bearing in mind that everyone is different:

  • Heavy smokers (around 15 or more cigarettes a day, first cigarette within 30 minutes of waking): 20mg is the usual starting point, because lower strengths often leave cravings unmet and push people back to smoking.
  • Moderate smokers (roughly 10 to 15 a day): 20mg or 10mg depending on how strong you like your throat hit; many people begin at 20mg and step down within a few weeks.
  • Light or social smokers: 10mg or 5mg is generally more comfortable, and 20mg may feel too strong.
  • Non-smokers and non-nicotine users: do not start vaping. Nicotine is addictive and a 20mg salt is not a sensible choice for a first-time user.

Signs a strength is too high include dizziness, nausea, headaches, a racing heart, a very harsh throat hit or feeling jittery. If any of these happen, stop, drink water and move to a lower strength. Signs it is too low are frequent chain vaping, constant cravings, irritability and still reaching for cigarettes. Be honest with yourself about which side you are on, because the aim is to stop smoking completely.

A sensible plan for many switchers is to start on 20mg, stabilise for several weeks, then move to 10mg and eventually lower as cravings reduce. Your local NHS stop smoking service can offer free support and combine vaping with behavioural help, which improves quit rates. This page is general information and not medical advice. If you have heart conditions, are pregnant or breastfeeding, or take regular medication, speak to a healthcare professional before using any nicotine product.

Do not use nic salt at 20mg in a sub-ohm tank running at high wattage. High-power devices produce far more vapour per puff, and the nicotine intake becomes much larger than the strength suggests. Nic salts are designed for low-power mouth-to-lung use, which is covered in the device section below.

Performance and Vapour Delivery

Performance with a nic salt is different from performance with a big-cloud freebase liquid, so it helps to judge it on the right criteria: nicotine satisfaction, flavour accuracy, throat comfort and consistency from the first fill to the last.

Nicotine delivery. At 20mg/ml, Blue Slush Ice gives a firm nicotine hit that most smokers find satisfying in only a few puffs. Because nic salts absorb quickly, you typically take fewer, shorter puffs than you would with a low-strength freebase liquid. This is useful for people who find it hard to sit through long vaping sessions, and it is the main reason salts are popular with ex-smokers.

Vapour production. Expect modest, discreet vapour. Pod kits run at low wattage and use a tighter airflow, so the clouds are smaller than those from a sub-ohm setup. The exact PG/VG ratio is printed on the bottle label and varies between ranges, but nic salts generally lean towards a higher proportion of PG or a balanced split, because thinner liquid wicks well in small coils and carries flavour efficiently. If you want a hazy, thick cloud, this is not the product category for it.

Throat hit. Salt nicotine softens the harshness, but the ice cooling adds a different sensation. Most people describe the combined effect as crisp rather than scratchy. If you feel the throat hit is stronger than you want, lower the wattage slightly or switch to a 10mg bottle of the same flavour if available.

Puffs per bottle. There is no official puff count for a bottle, because it depends on your device, power and draw length. As a rough planning figure only, many pod users get somewhere around 150 to 250 puffs per millilitre, which would put a 10ml bottle at roughly 1,500 to 2,500 puffs. Heavier vapers will be at the lower end of that range, and light users at the higher end. Treat it as an estimate rather than a specification.

Consistency. A well-sealed 10ml bottle should deliver the same flavour from the first refill to the last, provided the coil is in good condition and the liquid is stored properly. The most common sources of inconsistency are not the liquid itself but a tired coil, a half-empty pod that is dry-hitting, or overheating from too high a wattage. These are all covered in the troubleshooting section.

Where it performs best. Between roughly 8 and 15 watts in a pod device with a mesh or ceramic coil, using slow, steady 2 to 3 second draws. In that window you get the best compromise between flavour, cooling, battery life and coil lifespan.

Bottle Design, Labelling and Build Quality

Because this is an e-liquid, the design and build quality that matters is the bottle, the cap, the label and how well the pack protects the liquid, not a case or a screen. Here is what to look for in the bottle you receive and why each element matters.

  • 10ml capacity: UK rules limit nicotine e-liquid bottles to 10ml, so this is the largest size available. It fits easily in a jacket pocket or bag.
  • Nozzle and fill tip: most 10ml nic salt bottles use a slim, squeezable plastic bottle with a narrow nozzle tip designed to fit the fill ports of pod devices. Check that the tip fits your pod before you open the bottle, since some very small fill holes need a thin tip.
  • Child-resistant, tamper-evident cap: UK law requires nicotine e-liquid bottles to have a child-resistant closure and a tamper-evident seal. Check that the seal is unbroken when the parcel arrives. If it is broken, do not use the bottle and contact the seller.
  • Label information: the label should show the nicotine strength, the ingredients list, the required health warning, a batch code and the manufacturer or importer details, in line with UK notification rules. Keep the outer carton or label if you want to record the batch number for any query.
  • Colour-coding: many brands use bold colours or artwork linked to the flavour, which helps you quickly pick the right bottle from a shelf if you own several.

Build quality in practice. A good bottle is squeezable enough to dispense one controlled drop at a time but sturdy enough not to leak when carried. When it arrives, check that the cap closes fully, the tip is intact and no liquid has crept around the neck. A little residue on the outside of a pack is not unusual in transit, but a half-empty bottle is a reason to ask for a replacement.

Storage. Keep the bottle upright, capped, away from sunlight and heat, and well out of reach of children and pets. Nicotine liquid is poisonous if swallowed or spilled on skin in large quantities, and the sweet fruit scent makes it more tempting to small children than a tobacco flavour would be. A cool cupboard or drawer is ideal. Heat and light can darken the liquid and dull the flavour over time, so avoid leaving it in a car or on a windowsill. Properly stored, unopened bottles usually keep their quality for around 12 months or more, and you should always follow any date printed on the label.

Empty bottles. Once empty, the plastic bottle can usually go into household plastic recycling, though local rules vary, so check your council guidance. If the bottle is part-used and you no longer want it, do not pour it down a drain. Contact your local household waste recycling centre for advice on disposing of nicotine liquid safely.

Compatible Devices, Coil Types and Mesh Technology

Choosing the right device is the single biggest factor in how good this liquid tastes and how much you enjoy using it. Nic salts are designed for small, low-power, mouth-to-lung devices, and Blue Slush Ice is no exception.

Devices that suit it:

  • Refillable pod kits with a fixed output or a power range of about 8 to 20 watts. These are the most popular choice, because they are compact, easy to fill and designed around salt nicotine.
  • Closed pod systems with refillable pods that have a fill port on the side. Check that the device allows you to refill the pod, since some pods are sold as sealed, single-use items.
  • Small pen-style kits with coil resistance in the 0.8 to 1.2 ohm region and moderate power.

Devices to avoid: sub-ohm tanks with coils below about 0.5 ohms, devices running above roughly 25 watts, and any kit marketed for large clouds. These push too much liquid through the coil, which can make 20mg salt too harsh and too strong, and wastes your liquid quickly.

Coil types explained. Most modern pods use one of two coil styles:

  • Mesh coils use a flat, perforated metal sheet that gives a larger heating area than a traditional round wire. The result is even heating, quicker warm-up, better flavour reproduction and less chance of hot spots. For a layered sweet-and-cool flavour like this one, a mesh coil keeps the fruit and cooling in balance.
  • Ceramic coils use a porous ceramic wick with embedded heating element. They tend to be consistent and resistant to burnt tastes, although the flavour can feel a touch more muted than mesh.
  • Standard wire coils in cotton wicks are still found in many pod kits, and they produce good flavour at low wattage but can be more sensitive to dry hits if the pod runs low.

Coil lifespan with sweet flavours. Sweeteners in fruit and slush e-liquids can caramelise on the coil surface, forming a dark residue that dulls flavour. As a rough guide, a coil in a pod used daily with sweet liquid lasts around one to two weeks, though this varies with wattage and how often you chain vape. A taste that turns flat or slightly burnt is usually your signal to swap the pod or coil, not to increase the power.

Priming. Always let a freshly filled pod or new coil sit for 5 to 10 minutes before the first puff. This allows the cotton or ceramic to saturate, and it is the best way to avoid an early dry hit that can ruin a new coil.

Battery Life, Charging and Device Care

A bottle of e-liquid has no battery of its own, but the device you pair it with does, and the way you charge and care for it affects safety, performance and lifespan. Here is what to consider when you use Blue Slush Ice in a pod or low-power kit.

Typical battery sizes. Entry-level pod kits generally carry batteries somewhere between 400mAh and 1,000mAh, while larger pen-style kits go beyond that. Because nic salt devices run at low power, a pod kit with a battery of 500 to 800mAh will usually last a moderate vaper a day or so before a recharge is needed, though heavier use shortens that. Consider these as ballpark figures, since the real number depends on the device, wattage and how often you take a puff.

Charging habits that help:

  • Use the USB cable supplied with your device, or a quality cable and a charger from a reputable brand marked with UKCA or CE approval.
  • Charge on a hard, non-flammable surface rather than a bed, sofa or cushion, and do not cover the device while it charges.
  • Do not leave a device charging unattended for long periods or overnight.
  • Stop using any device that is swollen, hot to the touch, damaged or has exposed wiring. Do not try to charge it.
  • Do not carry loose batteries or devices in a pocket with coins or keys, since contact with metal can cause a short circuit.
  • Most pod kits take about 30 to 90 minutes for a full charge from a standard USB port. Follow the manual rather than guessing.

Matching power to the liquid. Because nic salt is meant for lower wattage, it is easy on the battery. Running at 10 to 12 watts rather than 25 or 30 watts can extend the time between charges noticeably. It also reduces the chance of overheating the coil, which helps with flavour and coil life.

Cleaning the device. Wipe the pod contacts and the battery connection with a dry cloth or cotton bud occasionally. Sticky sweet residue from spilled liquid can interrupt the connection and cause a no-fire message. Take care not to push liquid into the airflow or the battery compartment.

Recycling devices and batteries. Vape devices and lithium batteries should never go into household bins or general recycling bins, because damaged lithium cells can start fires in collection vehicles and waste plants. In the UK, you can take old devices to many household waste recycling centres, and retailers that sell vaping products are required to offer take-back for waste electrical items. Look for a nearby drop-off point through your local council or the retailer, and remove nothing yourself unless the manual shows how.

How to Use: Filling, Priming and Vaping Technique

Using a 10ml nic salt bottle is straightforward once you have done it once or twice. Follow these steps for a clean, leak-free refill.

  • Step 1, power down. Switch the device off or remove the pod. If you can, work over a tissue or on a clean surface in case of a spill.
  • Step 2, open the fill port. Pull back the silicone bung or slide the cover on the pod. Check the pod manual, since the position varies from one model to the next.
  • Step 3, shake the bottle gently. This mixes any settled flavouring. Do not shake violently.
  • Step 4, fill slowly. Hold the pod at a slight angle and squeeze the bottle gently, aiming at the side wall of the fill hole instead of directly down the central airflow tube. Stop at or just under the max line. Overfilling is the most common cause of leaks.
  • Step 5, close it up. Press the bung fully back into place and wipe any spilt liquid from the outside of the pod.
  • Step 6, prime. Wait 5 to 10 minutes so the coil can absorb the liquid. A new coil may need a little longer.
  • Step 7, first puffs. Take a few short, gentle puffs without firing for long. If the device has adjustable power, start at the low end of the recommended range.

Vaping technique. Nic salts are designed for mouth-to-lung inhaling. Draw slowly for about 2 to 3 seconds into your mouth, pause for a moment, then inhale into the lungs and exhale. Avoid very long, very fast draws, which can overheat the coil, and avoid chain vaping, which does not give the coil time to re-wet. A short pause between puffs improves flavour and extends coil life.

How often to refill. A typical pod holds about 2ml, so a 10ml bottle fills a pod roughly four to five times once you account for some wastage. Check the level through the pod window and refill when it drops to about a quarter of the way full, rather than running it dry. A dry pod is the leading cause of a burnt taste.

Changing flavours. If you move from this flavour to a different one, use a new pod or coil where practical. Residue from the previous liquid can mix with the new flavour and muddy both. If you only have a single pod, empty it, rinse it with warm water, let it dry fully and refill.

Keep it away from children. Always cap the bottle right after filling and store it somewhere children and pets cannot reach it. Never fill a pod in front of small children and never leave a half-filled pod unattended.

Who This E-Liquid Is For and Who Should Avoid It

Blue Slush Ice 20mg is a targeted product. It is a good match for some adults and a poor match for others, and being clear about the difference is more useful than a generic recommendation.

It is likely to suit:

  • Adult smokers who want to switch. A 20mg salt offers a nicotine experience that many people find close enough to a cigarette to make switching manageable. UK public health bodies describe vaping as substantially less harmful than smoking, although it is not risk-free.
  • Former disposable users. If you used pre-filled disposables with a sweet ice flavour, this is the natural refillable equivalent. You get similar nicotine and a similar flavour style, but you reuse the hardware and often spend less per millilitre.
  • People who like sweet-and-cold flavours. If you enjoy blue raspberry style sweets, slush drinks or ice lollies, the profile will be familiar.
  • Pod kit owners who prefer mouth-to-lung vaping. The liquid is made for that style and works well at low power.
  • Vapers who want discretion. Low wattage and modest clouds make it suitable for use where you want to stay low-key.

It is likely to be a poor choice for:

  • Anyone under 18. It is illegal to sell or supply nicotine vaping products to under-18s in the UK, and this product is for adults only.
  • Non-smokers and never-smokers. There is no health benefit to starting nicotine, and 20mg is a high strength.
  • People who are pregnant or breastfeeding, or who have heart conditions or other serious health concerns, unless a healthcare professional has advised them on nicotine use.
  • Cloud chasers. If you want big vapour and use a high-power sub-ohm tank, a lower-strength freebase liquid is the right product type.
  • People who dislike cooling agents. If ice flavours make your throat feel tingly or sore, choose a non-ice fruit instead.
  • Those who already feel their nicotine intake is high. If 20mg gives you headaches or nausea, move down to 10mg or 5mg.

If you are unsure which category you fall into, start by considering how many cigarettes you smoke now and whether you plan to quit completely. Many people find that a full switch is easier with a strength that properly satisfies them, then reduce gradually once cravings settle.

Troubleshooting Common Problems

Most problems with a nic salt and pod kit are simple to fix. Work through the likely causes below before you assume the liquid or the device is faulty.

  • Weak or washed-out flavour: first, check for flavour fatigue by switching to another flavour for a day. If the problem persists, the coil is probably tired. Replace the pod or coil. Also make sure the pod is not running low on liquid.
  • Burnt or acrid taste: usually a dry hit from a coil that has not been primed, a pod that is nearly empty, or power set too high. Refill, wait 10 minutes, lower the wattage and take gentler puffs. If the burnt taste stays after a fresh refill, the coil has probably been damaged and needs replacing.
  • Leaking from the pod or device: the likely culprits are overfilling, a loose bung, a damaged seal or squeezing the pod. Wipe everything, refill to below the max line, press the bung firmly and avoid holding the pod near the vent holes. Carrying a device in a hot pocket or in a car in the sun can also cause leaks as the liquid expands.
  • Gurgling or spitting: too much condensation in the airflow channel. Blow gently through the mouthpiece to clear it, wipe the mouthpiece and avoid tilting the device upside down.
  • Device will not fire: check the battery charge, clean the contacts, make sure the pod is seated firmly and look for liquid in the connection point. If the device is a draw-activated type, check that nothing is blocking the airflow.
  • Throat hit too harsh: lower the wattage, take shorter puffs or consider a lower nicotine strength. The ice effect combined with nicotine can feel intense for some users, so allow a few days to adjust.
  • Cooling too strong or too weak: cooling reads stronger at lower power and weaker at higher power. Adjust the wattage slightly within the recommended range to find your preference.
  • Not enough vapour: pod kits produce modest clouds by design. Check the coil, the airflow setting and the liquid level. If you want much more vapour, a different device and liquid type is needed rather than higher power on this one.
  • Coil fails quickly: sweet flavours can build residue. Avoid chain vaping, keep power moderate and replace the coil at the first sign of a flat taste.
  • Skin or eye contact with liquid: rinse immediately with plenty of water. If irritation persists or the liquid is swallowed, seek medical advice or call NHS 111 or 999 in an emergency.

If you have done all of this and the problem continues, contact the retailer with your order number, a description of the issue and, if you can, a photo. A clear report helps the team resolve it quickly.

Value for Money: Cost per Millilitre and Running Costs

Value is about more than the sticker price. For a 10ml e-liquid you should think in terms of cost per millilitre, how long a bottle lasts, what the device and coils add to the total, and how the cost compares with other nicotine options.

Volume compared with disposables. A 10ml bottle contains five times the liquid of a 2ml disposable, and disposables are no longer a legal option in the UK in any case. If you were previously buying a new disposable every few days, switching to a refillable setup with 10ml bottles is normally cheaper over a month, even after you account for the cost of a pod kit and occasional replacement coils.

How long a bottle lasts. This depends on how much you vape. A light user might take one to two millilitres a day, which means a 10ml bottle lasts around five to ten days. A heavy user on a pod device could go through three millilitres or more per day, making a bottle last closer to three days. Using the rough figure of 150 to 250 puffs per millilitre mentioned earlier, one bottle represents several days to a couple of weeks of typical use.

Hidden running costs to factor in:

  • Coils or pods: budget for a replacement roughly every one to two weeks for sweet flavours. This is often the largest ongoing cost after the liquid.
  • Device: a one-off purchase that you keep for a year or more if you look after the battery.
  • Charging: negligible in electricity cost.

Compared with smoking. A pack of 20 cigarettes now costs well over £15 at most UK shops, so for a regular smoker a vape kit with 10ml bottles of nic salt can offer a large saving. Of course, the lasting benefit is the health one, since you are stopping inhaling tobacco smoke.

Getting a better price. Check whether the shop offers multi-buy deals on 10ml bottles, because buying several of the same range usually lowers the per-bottle price. Compare cost per millilitre across ranges rather than comparing sticker prices, and make sure a cheaper bottle is the same nicotine strength and a genuine, correctly labelled product. Avoid unusually cheap unbranded liquids, since the label, ingredients and notification details matter for safety.

Verdict on value. For an adult smoker who wants a sweet ice flavour at 20mg, a 10ml nic salt bottle is a sensible, economical option compared with disposables and cigarettes. Its value depends mostly on pairing it with a suitable device and replacing coils on time, so that you do not waste liquid on dry or burnt pods.

Honest Comparisons With Other Options

No single e-liquid suits everyone, so here is a fair look at how Blue Slush Ice 20mg compares with the alternatives you are likely to be considering.

Versus single-use disposables. Disposables have now left the UK market. Even when they were available, a disposable offered convenience with no filling, but with 2ml of liquid, no ability to change flavour in the same device and a lot of electronic waste. A refillable kit with a 10ml nic salt takes slightly more effort but gives better value, much less waste and a choice of devices and flavours.

Versus freebase e-liquid. Freebase liquids in 3mg, 6mg or 12mg strengths are designed for larger sub-ohm tanks and direct-to-lung vaping, giving bigger clouds and fuller flavour at higher wattage. They suit people who enjoy vapour production or who no longer need a strong nicotine hit. Nic salts like this one win on throat smoothness at high strengths, speed of satisfaction and compact devices. Freebase wins on cloud size and lower nicotine options for tapering.

Versus other 10ml nic salt ranges. There are many established ranges in the UK market offering blue raspberry style and ice flavours at 20mg, including ranges from big disposable-brand spin-offs and independent e-liquid makers. In practice, the differences come down to flavour balance (sweetness against tartness against cooling), the PG/VG ratio and the price per bottle. It is hard to claim one is objectively better, because taste is personal. If you like the idea of a blue slush with a chilled finish, this bottle is a reasonable place to start, and you can compare it with similar flavours from other ranges using a multi-buy to keep the cost low.

Versus the same flavour at 10mg or 5mg. If this flavour is offered in lower strengths, use them to step down once your cravings ease. A lower strength usually gives a gentler throat hit and lets the sweet fruit and cooling show through more, which some people prefer even at the start.

Versus prefilled pods. Prefilled, replaceable pods are convenient and avoid spills, but cost more per millilitre and lock you into one manufacturer. Refillable pods with a 10ml bottle usually save money in the long run and give you a much wider choice of flavours.

Where this product is weaker. It is not for large clouds, it will not suit anyone averse to cooling agents, and its sweetness shortens coil life compared with tobacco or plain menthol. Weighed against those limits, it does what it claims: a sweet, chilled blue slush flavour in a smooth 20mg salt that suits low-power pod devices.

Flavour

Blue Slush Ice

What's in the Box?

  • 1 x Blue Slush Ice Double Brew Nic Salts 10ml 20mg bottle
  • Child-resistant, tamper-evident cap
  • Nicotine warning & safety insert

How to use

  1. Fill your pod or tank with 1.5-2 ml of liquid
  2. Let the coil sit and prime for 3-5 minutes
  3. Start with short mouth-to-lung draws
  4. Top up when liquid reaches the fill line

Specifications

BrandDouble
Product typeE-Liquid
Nicotine strength20mg
Available flavours1 (Blue Slush Ice)
Price£1.10
AvailabilityIn stock — same-day dispatch
ComplianceUK TPD-compliant, MHRA-registered

Pros & cons

Pros

  • Best value per ml in the category
  • Choose your own device and coil
  • Available in a wide strength ladder

Cons

  • Refilling can leak if you overfill
  • Coil priming has a small learning curve
  • You handle the bottle — less discreet than pods

Customer Buying Tips

  • Match the strength to how much you smoked: 20+/day → 10-20 mg nic salt; 10/day → 10 mg; under 5/day → 3-6 mg freebase.
  • Match the ratio to your device: pod kits take 50/50, sub-ohm tanks take 70/30 shortfill.
  • Don't overfill: leaving the airhole clear prevents gurgling and leaking.
  • Shake before use so the nicotine and flavour integrate evenly.

More from Double

Similar e-liquids

Explore related categories

About Double

Double supplies e-liquids to the UK market through Vape Shop Online. We stock the current Double range in full with same-day dispatch on weekday orders before 4pm.

Shop the full Double range →

Frequently asked questions

Which nicotine strength should I choose, and is 20mg too strong?

20mg/ml (2%) is the highest strength allowed in the UK and is aimed at heavier smokers who are switching to vaping. If you smoke fewer than around 10 cigarettes a day, 10mg or 5mg salts are usually more comfortable, and you can step down gradually as your cravings settle. If 20mg makes you dizzy, nauseous or jittery, stop and move to a lower strength.

Can I use this in a sub-ohm tank or a high-wattage device?

It is not recommended. Nic salts at 20mg are designed for low-power mouth-to-lung pod kits and pen devices, typically running at roughly 8 to 15 watts with coils of about 0.8 ohms or higher. Sub-ohm setups produce far more vapour per puff, which makes the nicotine intake much greater and the throat hit harsh.

How do I charge the device I use with this e-liquid?

The e-liquid has no battery, so charging depends on your pod kit or pen. Use the supplied USB cable or a reputable certified charger, charge on a hard surface, and do not leave it charging unattended or overnight. Most pod kits take about 30 to 90 minutes to charge, so follow the instructions in your device manual.

Can I swap to a different flavour, and does the same flavour come in other strengths?

Yes, you can change flavour by emptying and rinsing the pod, or by fitting a fresh pod or coil, so the old taste does not carry over. Many nic salt ranges, including this one in some cases, offer the same flavour in lower strengths such as 10mg or 5mg. Check the product listings on the site for the strengths and variants currently in stock.

How long does a 10ml bottle last?

It depends on how much you vape. A light user taking one to two millilitres a day may get five to ten days from a bottle, while a heavy pod user might use it up in three days or so. As a rough planning figure only, a 10ml bottle gives somewhere around 1,500 to 2,500 puffs, though this varies by device and draw length.

Is it good value compared with disposables and cigarettes?

A 10ml bottle holds five times the liquid of a 2ml disposable, and single-use disposables can no longer be sold in the UK. With a refillable kit, the cost per millilitre is usually lower, though you should include replacement coils or pods in your budget. For a regular smoker, the running cost is normally well below the cost of cigarettes.

Who should and should not buy this product?

It suits adult smokers who want to switch, former disposable users and anyone who likes sweet, chilled flavours in a pod device. It should not be bought by anyone under 18, by non-smokers, or by people who are pregnant, breastfeeding or have heart conditions, unless a healthcare professional has advised otherwise. Cloud chasers and people who dislike cooling agents will probably prefer something else.

Why does the flavour taste weaker after a few days?

This is often flavour fatigue, where your taste buds become used to a sweet flavour. Try a different flavour or a menthol for a day, drink water and then go back. If the taste is still flat or burnt, the coil is probably worn and the pod or coil should be replaced, which is more common with sweet liquids.

Do you deliver across the UK, and is age verification required?

We deliver to addresses throughout the UK, and you must be 18 or over to buy and receive nicotine products. Age checks may be carried out at checkout and on delivery, so someone over 18 must be available to accept the parcel. Delivery options and estimated times are shown at checkout.

What if my bottle arrives damaged, leaking or with a broken seal?

Do not use a bottle if the tamper-evident seal is broken or it has leaked heavily. Contact us with your order number and a photo and we will arrange a replacement or refund in line with our returns policy. For hygiene and safety, opened e-liquid bottles are generally not eligible for return unless faulty, so check our returns page for full details.

Delivery & returns

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.

Customer Reviews

4.8
★★★★★Based on 202 verified reviews
5★
76%
4★
18%
3★
4%
2★
1%
1★
1%
★★★★★

Super happy with the order

Battery lasts me a full day easily. Charging is quick. Overall very pleased with the purchase.

Leah N. · Verified buyer
★★★★★

Taste is as good as the reviews said

This is now my daily. Flavour is spot on and it lasts well. Proper good product.

Ben Q. · Verified buyer
★★★★☆

Top-quality product

Does what it should. Smooth hit, no burnt taste even after a couple of weeks. Would recommend.

Olivia J. · Verified buyer
★★★★★

Better than my last brand

Been meaning to leave a review for a while. This has become my daily go-to. Highly recommend.

Oscar H. · Verified buyer
★★★★★

Convinced my mate to switch too

Did a comparison with another brand and this came out on top. Better flavour and better value.

Nina T. · Verified buyer
★★★★☆

Quality is there

Arrived well-packaged with next-day delivery. Taste is clean and authentic. Nothing to complain about.

Tomás N. · Verified buyer

You may also like

Our Collections