What Is E-Juice? A Beginner's Guide to Vape Juice

Updated

E-juice (also called e-liquid or vape juice) is the liquid that a vape device heats into aerosol. It is made of four core components: propylene glycol (PG), vegetable glycerin (VG), nicotine (optional, and available in strengths such as 3mg through 36mg), and flavorings. If you are new to vaping, the two decisions that shape your experience most are the PG/VG ratio and the nicotine strength. This guide explains both, plus how to fill, store, and mix e-juice without the common beginner mistakes.

Note on access: ECBlend Flavors requires you to be 21+ and to complete age verification before purchasing or using its e-liquid products. It is illegal to buy or use these products if you are a minor, and illegal to sell or resell them to minors.

The four ingredients, and what each one does

Ingredient What it contributes What to watch for
PG (propylene glycol) Throat hit, carries flavor, thinner consistency Higher PG = sharper throat hit; some people find it harsh
VG (vegetable glycerin) Vapor production, smoother feel, slightly sweet Higher VG = thicker liquid, may wick slowly in some coils
Nicotine The stimulant effect; also adds throat hit Strength is measured in mg/mL; choose deliberately
Flavorings Taste Flavor concentrates are sold separately for DIY mixing

PG and VG are the base. Nicotine and flavoring sit on top of that base. Because PG and VG behave differently, the ratio between them is the single most useful number to understand as a beginner.

PG/VG ratios: how they change the vape

A "70/30" label usually means 70% VG and 30% PG, but labeling conventions vary by brand, so check which number comes first. The practical effects:

  • Higher PG (e.g., 50/50 or 60/40 PG-forward): more throat hit, more flavor intensity, thinner liquid that wicks quickly. Common in pod systems and for people switching from cigarettes who want a familiar "kick."
  • Higher VG (e.g., 70/30 or 80/20 VG-forward): smoother inhale, larger vapor clouds, thicker liquid. Common in sub-ohm tanks and high-wattage devices.
  • Balanced (50/50): a middle ground that works in many beginner setups.

If you are unsure, a balanced or slightly PG-forward ratio is the safer starting point in a basic device. Very high-VG liquid in a small coil can wick too slowly and produce dry hits.

Nicotine strength: picking a starting level

ECBlend lists nicotine availability from 3mg through 36mg. Strength is not a quality ranking — it is a match to your device and your tolerance.

  • Low (3mg–6mg): typical for sub-ohm/high-power devices that produce a lot of vapor per puff. A little nicotine goes a long way when you inhale more aerosol.
  • Medium (12mg–18mg): common in pod systems and lower-power devices.
  • High (24mg–36mg): generally for very low-power devices or heavy former smokers; a small puff delivers a lot.

The key rule: higher-power devices need lower nicotine, and lower-power devices can use higher nicotine. Choosing a high strength for a high-power device is one of the most common beginner mistakes and tends to make the experience unpleasant.

Filling and storing e-juice

Filling (general steps):

  1. Confirm your device is off and, if it has one, remove the pod or tank.
  2. Locate the fill port or opening. On most pods and tanks it is a small port with a silicone plug or a threaded top.
  3. Add liquid slowly, avoiding the central airflow channel. Overfilling causes leaks and gurgling.
  4. Reassemble, wait a few minutes so the coil can absorb liquid, then start at low power and increase gradually.

Expected result: clean vapor with no spitting or burnt taste. If you get a burnt taste immediately, the coil was likely dry — let it sit longer before vaping.

Storing:

  • Keep bottles sealed and upright, away from direct sunlight and heat.
  • Keep out of reach of children and pets; nicotine liquid is a poisoning risk if ingested.
  • Follow the age-verification and youth-access rules that apply where you buy — ECBlend requires 21+ verification and states it is illegal to sell to minors.

Mixing your own: what the ECBlend options actually are

ECBlend sells several DIY-style products, and they are not interchangeable:

  • Create Your Own Nixotine Flavor — select up to 4 flavors and set a percentage for each, up to a total of 100%. Listed at MSRP $19.95, now $15.95.
  • Create Your Own Flavor Concentrate (Flavor Artists) — select up to 3 flavors plus sweetener options. Listed at $2.39. This is concentrate, not finished e-liquid.
  • Create Your Own E-Liquid Wizard (Flavor Vapor, tobacco-free) — select up to 4 flavors, percentages totaling 100%. Listed at $6.25.

The common beginner mistake here is treating a flavor concentrate as ready-to-vape liquid. Concentrates are meant to be mixed into a base; using them directly gives an overpowering or harsh result. Also watch your percentages: if you set four flavors at 30% each, you have 120%, which is not valid — the total must stay at or under 100%.

Quick decision guide

  • Just switching from cigarettes, using a simple pod: start with a balanced or PG-forward ratio and a medium nicotine level.
  • Using a high-power sub-ohm tank: choose a VG-forward ratio and a low nicotine level (3mg–6mg).
  • Want to experiment with flavors: use the E-Liquid Wizard or Nixotine builder, keep flavor percentages within the 100% total, and treat Flavor Concentrate as an additive, not a finished product.
  • Unsure about hardware compatibility: ECBlend also stocks coils, replacement parts, batteries (e.g., Hohm Tech 18650 Hohm Life v4 at $11.95), and empty bottles, so you can match liquid to device in one place.

The short version: e-juice is PG + VG + optional nicotine + flavoring. Match the PG/VG ratio and nicotine strength to your device's power level, fill slowly and let the coil soak, store it safely away from children, and don't confuse flavor concentrate with ready-to-vape liquid.