Salt nicotine (also called nic salt or nicotine salt) is nicotine combined with an acid, which lowers the pH of the e-liquid and allows higher nicotine concentrations to be used. It is the form found in most pod systems and disposables. For the wider picture on strength and sources, see our guide to nicotine in vapes.
Zavro products contain nicotine, which is an addictive chemical, and are for adults 21+.
What is salt nicotine?
Salt nicotine is nicotine that has been combined with an acid to form a salt. The result is an e-liquid with a lower pH than freebase nicotine, used mainly at concentrations of about 20 to 50 mg/mL.
The acid is most commonly benzoic acid. Levulinic, lactic and salicylic acids are also used. The nicotine itself is the same molecule whether it comes from tobacco leaves or is made synthetically; the salt form describes how it is bound in the liquid, not where it came from.
You will see several names for the same thing: nic salt, salt nic, nicotine salt, and salt nicotine. They all refer to nicotine paired with an acid.
What does nic salt mean on a vape label?
"Nic salt" on a label means the nicotine is in salt form, and the number next to it is the strength. For example, "5% nic salt" means about 50 mg/mL of nicotine in salt form.
US labels often state strength as a percentage by weight. As a rule, multiply the percentage by 10 to get approximate mg/mL: 2% is about 20 mg/mL, 3% is about 30 mg/mL and 5% is about 50 mg/mL. Treat the mg/mL figure as an approximation.
Is 5% nic salt the same as 50mg?
Yes, approximately. 5% nicotine salt equals about 50 mg/mL, and 50 mg on a nic salt label almost always means 50 mg/mL, not 50 mg per device.
That distinction matters. The mg/mL number is a concentration. It does not tell you how much nicotine is in the whole device, which also depends on how much e-liquid it holds. For a closer look at the conversion, see 5% vs 2% nicotine.
How is salt nicotine different from freebase nicotine?
Freebase nicotine is nicotine in its unprotonated form, while salt nicotine is nicotine bound to an acid. The practical differences are the pH of the liquid, the strengths it is used at, and the devices it is paired with.
| Feature | Freebase nicotine | Nicotine salt |
|---|---|---|
| Chemical form | Unprotonated nicotine | Nicotine combined with an acid |
| Liquid pH | Higher | Lower |
| Typical strengths | About 3-12 mg/mL in refillable kits | About 20-50 mg/mL |
| Typical devices | Refillable kits, often higher wattage | Pod systems and disposables, usually low wattage |
| How people describe it | Mostly used at lower strengths | Many vapers describe it as smoother at higher strengths |
The descriptions in the last row are personal impressions, not guarantees. Individual experience varies.
Why do disposables and pod systems use nicotine salt?
Disposables and pod systems use nicotine salt because it works at higher concentrations in compact, low-wattage devices. Many vapers describe salt nicotine as smoother at those strengths, which is why the format became standard in these products.
Salt nicotine is the form normally used for strengths of about 20 to 50 mg/mL in these devices, and a small low-wattage battery paired with a salt formula is a common combination across the category.
This is a formulation choice, and it does not change the fact that the product contains nicotine. Salt or freebase, nicotine is addictive.
What strengths does salt nicotine come in?
Salt nicotine typically comes in strengths from about 20 mg/mL (2%) to about 50 mg/mL (5%). Pod systems and disposables usually offer a small set of fixed strengths rather than a wide range.
- 2%: about 20 mg/mL
- 3%: about 30 mg/mL
- 5%: about 50 mg/mL
Which strength suits a person depends on their own preference and how much nicotine they already use. There is no single correct number.
Which Zavro products use nicotine salt?
Zavro Spur uses nicotine salt from a tobacco-free (synthetic) source. It is sold at 5% today, and a 2% version goes on sale in December 2026.
Spur is a rechargeable disposable rated for 50,000 puffs. It has an OLED screen that shows e-liquid and battery level, USB-C charging, a dual mesh coil and three power levels, the top one called Turbo. It comes in nine flavors. It is sold singly or in boxes of 5 and is assembled in the USA. Rated puffs are a manufacturer figure under test conditions, and real counts vary with puff length, power mode and habits.
Browse the full Spur collection or see Zavro Spur 5%.
The nicotine source is a separate question from the salt form. To see how tobacco-derived and synthetic nicotine differ, read Synthetic Nicotine vs Tobacco-Derived Nicotine. Tobacco-free does not mean nicotine-free.
How can you tell if a vape uses nicotine salt?
Check the label or product page for the words "nic salt", "salt nicotine" or "nicotine salt" next to the strength. If a disposable or pod lists 20 to 50 mg/mL, or 2% to 5%, it is almost certainly a salt formula.
If the label does not say, look at the format and strength together. Refillable bottles at 3 to 12 mg/mL are typically freebase, while sealed pods and disposables at higher strengths typically use salt. When in doubt, ask the seller, since the form is a plain labeling fact. Remember that the form says nothing about the source: salt nicotine can be tobacco-derived or synthetic.
Frequently asked questions
Short answers to the most common salt nicotine questions follow below. Nic salt, salt nic and nicotine salt all mean the same thing, and 5% is about 50 mg/mL.