Key takeaways
- DIY vape juice means mixing your own from four ingredients (VG, PG, flavoring and optional nicotine) for cheaper, fully custom bottles.
- The one real hazard is concentrated nicotine. It’s toxic, absorbs through skin and is dangerous to swallow, so wear gloves, measure precisely, and keep it away from children and pets.
- Mix by weight, not volume. An electronic scale is more accurate and less messy than syringes, and an online calculator does the math for you.
- You’ll need a little kit: VG, PG, flavor concentrates, nicotine (if you want it), bottles, a scale, syringes, gloves and labels.
- It’s cheaper long-term and endlessly customizable — but it costs time and a small upfront outlay, so it suits tinkerers more than casual vapers.
What is DIY vape juice?
DIY vape juice is e-liquid you mix yourself instead of buying it ready-made. You combine the same ingredients any bottle contains — the PG/VG base, flavor concentrates and, if you want it, nicotine — in the ratio and strength you choose. Done right it’s cheaper per mL than shop juice and lets you build flavors no brand sells. Done carelessly, mainly with nicotine, it’s a genuine safety risk, so the safety rules come first.
Safety first: the rules that matter
Most of DIY is harmless kitchen-table stuff. The exception is nicotine, which deserves real respect:
- Concentrated nicotine is toxic. Nicotine base or high-strength shots can be absorbed through the skin and are dangerous to swallow. Always wear nitrile gloves, wipe up spills immediately, and never eyeball a measurement.
- Store it locked away from children and pets, clearly labeled. A bottle of high-strength nicotine is not something to leave on a counter.
- Don’t chase high strengths. More nicotine than you need just risks nicotine sickness (nausea, dizziness, a racing heart). Mix to a sensible strength, not the strongest you can — most DIY lands around 3–12mg/ml (3–6mg for sub-ohm setups, higher for small pods).
- Use vaping ingredients only. Buy USP-grade PG and VG and flavor concentrates made for vaping. Never add oils, plain water as a base, alcohol/vodka, or kitchen flavorings — some are fine to eat but not to inhale.
Follow those and DIY is safe. Skip them and it isn’t.
What you need to make vape juice
Ingredients:
- Vegetable glycerin (VG): the thick base that makes the vapor. USP grade.
- Propylene glycol (PG): the thin base that carries flavor and throat hit. USP grade. (How much of each you use is the PG/VG ratio — 70/30 is a solid all-round default, 50/50 for pods.)
- Flavor concentrates: made for vaping, not baking. Usually 5–15% of the mix. Most concentrates (and liquid nicotine) are PG-based, so they nudge the mix toward PG — if you want high VG, factor that in.
- Nicotine: optional, as a base or “nic shot.” Salts or freebase (the difference here). Skip it for 0mg juice.
Equipment:
- An electronic scale (0.01g) — the single best tool for accuracy.
- Syringes and blunt needles: if you’d rather mix by volume.
- Empty bottles: for your base liquids and your finished juice.
- Nitrile gloves and labels: non-negotiable for handling nicotine and tracking what’s in each bottle.
Two ways to mix: by weight vs by volume
- By weight (recommended): put a bottle on the scale, zero it, and add each ingredient by grams. It’s faster, cleaner and more accurate — no sticky syringes, no air bubbles. Best for anyone doing this more than once.
- By volume: measure each ingredient in millilitres with syringes. It works and needs no scale, but it’s fiddlier and less precise, especially with thick VG.
Either way, don’t do the math yourself; use a free online e-liquid calculator. You enter your target strength, PG/VG ratio, flavor percentage and batch size, and it tells you exactly how much of each ingredient to add in grams or millilitres. It’s what keeps a home mix accurate and safe.
How to mix it, step by step
- Plan the batch in an e-liquid calculator: set your bottle size, PG/VG ratio, nicotine strength and flavor percentage.
- Glove up and set out your bottles, scale (zeroed) and ingredients.
- Add the ingredients in order: nicotine first, then flavoring, then PG, then top up with VG (the calculator lists the exact amounts). Zero the scale between each if mixing by weight.
- Cap and shake well for a minute so everything blends.
- Label the bottle: strength, ratio, flavor and date. You will not remember later; every DIY mixer learns this the hard way.
A worked example. Say you want a 30ml bottle at 70/30 VG/PG, 3mg nicotine and 10% flavor. Plug that into a calculator and it hands you roughly: 3ml of flavor concentrate, about 0.9ml of 100mg/ml nicotine, then the rest as base — around 18ml VG and 8ml PG. Add them in that order, shake, and steep. Change any number and the calculator redoes the math instantly, which is exactly why you don’t do it by hand.
After you’ve mixed it
- Steep it. Fresh DIY juice usually tastes better after resting — richer flavors especially. Our guide to steeping covers how and how long.
- Store it properly. Cool, dark and sealed, away from heat and light, so it keeps its full shelf life.
- Test a small batch first. Try a new recipe in a small bottle before committing to a big one — flavor percentages vary a lot between brands, and it’s cheaper to get it wrong at 10ml than 100ml.
A few tips for better results
- Start with single flavors before blending, so you learn what each concentrate actually tastes like.
- Percentages differ by brand: one company’s 5% strawberry is another’s 8%, so follow the maker’s recommended range.
- Join a DIY community. Recipe sites and forums are full of tried-and-tested mixes; you don’t have to invent from scratch.
Is DIY vape juice worth it?
Cheaper, yes, eventually. Once you’ve bought the kit and base ingredients, your cost per mL drops well below shop juice, which adds up fast if you vape a lot (see how much vaping costs). The trade-offs are time and a small upfront outlay, plus the learning curve. So DIY suits tinkerers and heavy vapers who enjoy the process; if you just want a good bottle with no fuss, our tested best vape juice flavors will serve you better.
FAQ
Can you make vape juice without PG and VG?
Not really — PG and VG are the base that carries everything else and turns to vapor. You can shift the ratio (even 100% VG for a PG allergy), but you can’t replace them with oils or water, which aren’t safe to inhale.
Is DIY vape juice cheaper than buying it?
Long-term, yes. After the upfront cost of a scale and base ingredients, your cost per mL is well below shop-bought — a real saving for heavy vapers. It doesn’t pay off if you only vape occasionally.
How long does it take to make vape juice?
The mixing itself is 10–15 minutes once you’re set up. The wait is steeping — a few days for fruits, a week or two for richer flavors, before it’s at its best.
Is it safe to make your own vape juice?
Yes, if you respect the nicotine. Wear gloves, measure precisely with a calculator, use USP-grade vaping ingredients only, and store nicotine locked away from children. The base ingredients themselves are harmless to handle.
How long does DIY e-liquid last?
About the same as shop juice: roughly one to two years sealed and stored cool and dark. Label every bottle with its mix date so you know how old it is.
