Understanding the two types of nicotine in e-liquids, how they differ, and which one is right for you.

If you have browsed e-liquids in New Zealand, you have probably noticed two main types: nicotine salt (often shortened to "nic salt") and freebase nicotine. They look similar on the shelf, but they behave quite differently when vaped. This guide explains the science behind each type, the practical differences you will notice, and how to choose the right one based on your preferences and device.
What Is Freebase Nicotine?

Freebase nicotine is the traditional form of nicotine used in e-liquids since vaping began. It is nicotine in its purest chemical form, extracted from tobacco leaves and processed to remove any additional compounds. This "freebasing" process was originally developed by the tobacco industry in the 1960s to increase the potency and absorption of nicotine in cigarettes.

In e-liquid form, freebase nicotine has a higher pH level (more alkaline), which means it produces a noticeable throat hit, especially at higher concentrations. This throat sensation is familiar to people who have smoked cigarettes, but it becomes harsh and uncomfortable above around 12–18 mg/mL, which effectively limits how much nicotine you can comfortably inhale per puff.

What Are Nicotine Salts?

Nicotine salts are the form of nicotine that occurs naturally in tobacco leaves. Unlike freebase nicotine, nic salts have not been chemically altered to strip away other compounds. Instead, a mild acid (usually benzoic acid) is added to bring the pH level down, making the solution less alkaline and closer to the natural pH of your body.

This lower pH is the key to everything that makes nic salts different. It results in a significantly smoother throat hit even at higher nicotine concentrations, faster absorption into the bloodstream, and a more satisfying experience for people who need higher nicotine levels.

The simple version: Freebase nicotine is chemically modified for purity and gives a stronger throat hit. Nic salts are closer to natural tobacco nicotine, treated with acid for smoothness, and allow higher nicotine concentrations without harshness. 

How They Differ in Practice

Throat Hit

Freebase nicotine produces a pronounced throat hit that increases with nicotine strength. Many people find freebase uncomfortable above 12 mg/mL. Nic salts deliver a much smoother sensation, remaining comfortable even at 20–28.5 mg/mL (the NZ legal maximum). If you prefer a gentle, smooth inhale, nic salts are the better choice. If you enjoy a strong throat hit, freebase may suit you better.

Nicotine Delivery Speed

Research suggests that nicotine salts are absorbed into the body approximately 30–40% faster than freebase nicotine. This means you feel the effect more quickly with nic salts, which more closely mimics the rapid nicotine delivery of a cigarette. For people switching from smoking, this faster satisfaction can make the transition easier.

Strength Ranges

In New Zealand, the maximum legal nicotine concentration for any e-liquid is 28.5 mg/mL. In practice, freebase e-liquids are typically sold in strengths from 0 mg to 12 mg/mL, because higher concentrations become unpleasantly harsh. Nic salts are commonly available from 10 mg/mL up to 28.5 mg/mL, taking advantage of their smoother profile.

Device Compatibility

Nic salts are designed for low-power, mouth-to-lung (MTL) devices like pod systems and pen-style vapes. These devices produce less vapour and work well with higher nicotine concentrations. Freebase nicotine works in both MTL devices (at lower strengths) and higher-powered, direct-to-lung (DTL) sub-ohm devices that produce more vapour. Using high-strength nic salts in a powerful sub-ohm device is not recommended, as it can deliver an uncomfortably large dose of nicotine in a single puff.

Side-by-Side Comparison

Feature	Freebase Nicotine	Nicotine Salts
Throat hit	Strong, increases with strength	Smooth, even at high strengths
Common NZ strengths	0, 3, 6, 12 mg/mL	10, 20, 25, 28.5 mg/mL
Nicotine absorption	Gradual	Rapid (30–40% faster)
Best devices	MTL and DTL/sub-ohm	MTL pod systems only
Vapour production	Can be high (with DTL devices)	Lower, more discreet
Best for	Experienced vapers, cloud chasers	Beginners, ex-smokers, convenience
Cost per mL (typical NZ)	Similar	Similar
Flavour intensity	Good	Slightly more intense
Max legal strength (NZ)	28.5 mg/mL	28.5 mg/mL

Which Should You Choose?

Choose Nic Salts If:

You are switching from smoking and want the closest nicotine delivery to a cigarette. You prefer a smooth, gentle inhale without harshness. You use a pod system or other low-power MTL device. You want higher nicotine satisfaction from fewer puffs. You value convenience and discretion over large vapour clouds.

Choose Freebase If:

You enjoy a noticeable throat hit as part of the vaping experience. You use a higher-powered device or sub-ohm tank. You prefer lower nicotine concentrations (3–12 mg/mL). You are gradually reducing your nicotine intake and want precise control at lower strengths. You enjoy producing larger clouds of vapour.

Not Sure? Start Here

If you are new to vaping or switching from smoking, nicotine salts in a pod system is the most common recommendation. The combination of smooth delivery, fast satisfaction, and simple devices makes it the easiest starting point. You can always switch to freebase later if you decide you want a different experience.

NZ-Specific Considerations

All e-liquids sold in New Zealand must comply with current regulations under the Smokefree Environments and Regulated Products Act. Both nic salt and freebase e-liquids are legal and available from licensed specialist retailers. The maximum permitted nicotine concentration is 28.5 mg/mL for both types. Flavour names must use approved generic descriptors. All e-liquid must meet NZ labelling and packaging standards.

Frequently Asked Questions

Are nic salts safer than freebase nicotine?

Neither type is established as safer than the other. The primary difference is in the vaping experience (smoothness, absorption speed) rather than safety profile. Both deliver nicotine, which is an addictive substance. If you have health concerns, consult a healthcare professional.

Can I use nic salts in a sub-ohm device?

This is not recommended. Sub-ohm devices produce significantly more vapour per puff, which means you would inhale a much larger dose of nicotine with high-strength nic salts. This can cause nausea, dizziness, and discomfort. Nic salts are designed for low-power MTL devices.

What nicotine strength in nic salts equals a cigarette?

There is no exact equivalent because nicotine delivery depends on many factors including device, puff duration, and individual absorption. However, 20 mg/mL nic salts in a pod system is a common starting point for people who smoked around 10–20 cigarettes per day. Heavier smokers may start at 25–28.5 mg/mL.

Can I mix nic salts and freebase e-liquids?

Technically yes, but there is generally no reason to. Mixing them will produce an e-liquid with characteristics somewhere between the two types. If your current nicotine strength or throat hit is not quite right, it is usually better to adjust by choosing a different strength in the same type.

What is the maximum nicotine strength allowed in NZ?

The maximum permitted nicotine concentration in New Zealand is 28.5 mg/mL (approximately 2.85%). This applies to both nic salt and freebase e-liquids.