How to steep e-liquid. Better flavour, less waiting.
Opened a new custard shortfill and found it a bit flat, or a bit sharp? It might not be the juice. It might just need a little time.
Steeping is the vaper's version of letting a stew sit overnight. Here's what it actually does, which flavours benefit, how long to leave them, and the quick tricks that work (plus the ones that don't).
Short version? Here you go.
What is steeping e-liquid?
Steeping is simply giving e-liquid time to rest so all its ingredients properly blend together.
Every e-liquid is a mix of PG, VG, flavourings and (usually) nicotine. Straight after mixing, those ingredients haven't fully settled into each other. Over time they combine, and some of the sharper top notes mellow out. The result is often a rounder, smoother, fuller-tasting flavour.
Think of it like a curry or a chilli: good on day one, better on day two. Same ingredients, more time to get to know each other.
Steeping vs breathing
You'll often hear these two used together. Steeping means leaving the bottle sealed to rest. Breathing means taking the cap off (or the dropper out) for a few hours so some of the harsher, more volatile notes can air off. Most vapers just steep; breathing is an optional extra some people swear by for tobaccos.
Not sure what PG and VG actually do to flavour? Our guide What is PG & VG in e-liquid? explains it in plain English.
Which flavours benefit from steeping?
Not every e-liquid gains from a rest. As a rule of thumb, the richer and more complex the flavour, the more it tends to improve with time. Light, bright flavours are usually at their best straight away.
The ones that love a rest
Custards and creams tend to turn smoother and more rounded. Bakery and dessert flavours (think biscuits, cakes and pastries) gain depth. Tobaccos are the classic steepers, with harsh edges often softening after a few weeks.
The ones that don't need it
Fruits, menthols and ice blends are usually best fresh. Leave a bright fruit liquid too long and some of its zing can fade. If fruit is your thing, our best fruit e-liquids guide has plenty of ready-to-vape picks.
Shop-bought shortfills from established brands are made to be vaped straight from the bottle, and many have already spent time in transit and storage before they reach you. If yours tastes great on day one, just enjoy it. Steeping is about squeezing out a little extra, not fixing a 'broken' juice.
How long should you steep e-liquid?
There's no single magic number, and taste is personal. These are the rough timings we'd suggest as a starting point. Taste as you go and stop when you're happy.
| Flavour type | Steep it? | Rough time | What changes |
|---|---|---|---|
| Fruit & candy-style fruit | Not really | 0–2 days | Little change; can fade if left too long |
| Menthol & ice blends | No | Ready to vape | Cooling notes are best fresh |
| Custards & creams | Yes | 1–2 weeks | Smoother, richer, more rounded |
| Bakery & desserts | Yes | 1–2 weeks | Fuller, 'baked' depth comes through |
| Tobacco blends | Definitely | 2–4 weeks | Harsh edges soften, more complex |
| 10ml nic salts | No | Ready to vape | Made and sold ready to go |
If you've mixed a shortfill with a nic shot, add at least 24 hours on top so the nicotine is fully blended (more on that below).
Steeping after adding a nic shot.
This is where steeping matters most for everyday vapers. When you add a nic shot to a shortfill, the nicotine needs to be evenly mixed through the whole bottle. Otherwise your first few refills could be stronger or weaker than you expect.
Pop the cap back on, shake the bottle firmly for a minute or two, then leave it somewhere cool and dark. Give it another shake before each refill for the first few days.
Shake for 1–2 minutes, rest for 24 hours, then shake again before filling your tank. For a full walkthrough of ratios and strengths, read Shortfills and nic shots explained.
Need a shot? You'll find 18mg nic shots alongside our 100ml shortfills.
Most e-liquids are ready out of the bottle. Steeping just turns good into great.
How to steep e-liquid the easy way.
No gadgets needed. This is the simple method most vapers use.
1. Shake it properly
Cap on tight, then give the bottle a good shake for a minute or two. Shortfill bottles have extra space at the top, which helps everything move around.
2. Store it cool and dark
A kitchen cupboard or a drawer is perfect. Keep it away from sunlight, radiators and windowsills, as heat and light can dull flavour over time.
3. Shake every day or two
A quick shake keeps everything mixed while it rests.
4. Taste-test as you go
Fill a pod or tank every few days and see how it's changing. When it tastes the way you like, it's ready. There's no prize for waiting longer.
Write the date you opened or mixed the bottle on a small sticker. It makes taste-testing (and remembering how long it's been) a lot easier.
Rich flavours that reward a little patience.
Custards and creams are the flavours most vapers notice changing as they rest. All of these are 100ml shortfills, with room in the bottle to add a nic shot.
Can you speed up steeping?
A little, yes. Gentle warmth and movement help ingredients blend faster. Just keep it gentle.
Warm water bath
With the cap tightly on, stand the bottle in a bowl of warm (not hot) tap water for 10–15 minutes, then take it out, dry it and give it a good shake. You can repeat this a few times over a day or two.
Extra shaking
Shaking more often won't replace time, but it does help, especially in the first day after adding a nic shot.
What not to do
Never microwave e-liquid, and don't leave bottles on a radiator or in a hot car. Too much heat can spoil flavour and damage the bottle. If a bottle feels hot to the touch, it's too hot.
Steeping is about patience, not heat. A warm water bath is fine for a quick boost, but a week in a cool cupboard will always beat a shortcut.
How to tell if it's ready (or past it).
The best test is your own taste. A well-steeped liquid usually tastes smoother, fuller and better balanced, with no single note shouting over the rest.
Darker colour is normal
Don't panic if your liquid gets darker as it rests. Nicotine and some sweet or creamy flavourings naturally darken over time when exposed to air and light. It doesn't mean it's gone off.
When to bin it
Check the best-before date on the bottle. If a liquid smells or tastes noticeably 'off', has separated and won't mix back together however much you shake it, or the bottle is damaged, replace it.
Darker liquids, especially sweet custards, can wear coils out a bit faster. If the flavour suddenly goes muted or burnt after a while, it may be your coil rather than the liquid. See how to know when to change your coil.
Something worth steeping.
Browse our full range of shortfill e-liquids, from rich custards to classic tobaccos, or pop into your local I Love Vapour store and our team will point you to a favourite.
Free UK delivery on orders over £20.
Shop shortfills →Steeping e-liquid: your questions answered.
Do I need to steep shop-bought e-liquid?
Usually not. Shortfills and 10ml liquids from established brands are made to be vaped straight away. Steeping can make some richer flavours, like custards and tobaccos, a little smoother, but it's optional.
How long should I steep a shortfill after adding a nic shot?
Shake the bottle well for a minute or two and leave it for at least 24 hours somewhere cool and dark. Give it another shake before each refill for the first few days.
Do I steep with the cap on or off?
Steeping is done with the cap on. Taking the cap off for a few hours is called breathing, which some vapers like for tobaccos. If you do it, put the cap back on afterwards and keep the bottle somewhere safe.
Why has my e-liquid gone darker?
Darkening over time is normal. Nicotine and some sweet or creamy flavourings naturally darken with exposure to air and light. Check the best-before date and trust your taste; if it smells or tastes off, replace it.
Do nic salts need steeping?
No. 10ml nic salts are sold ready to vape. Just give the bottle a quick shake before filling your pod.
Can I steep e-liquid in a warm place to speed it up?
Gentle warmth helps, such as a short warm (not hot) water bath with the cap on. Never microwave e-liquid or leave it on a radiator or in a hot car, as too much heat can spoil the flavour and damage the bottle.
18+ only. Our products are only for adults aged 18 and over. Challenge 25 applies in all our stores and to every online order.
Warning: This product contains nicotine which is a highly addictive substance. Vaping products are not suitable for non-smokers, people under 18, or those who are pregnant or breastfeeding.