The main differences between salt nicotine (salt nic) and freebase nicotine are related to their chemical structure, smoothness of the vape, nicotine strength, and overall experience. Here's a breakdown:

1. Chemical Structure:

• Freebase Nicotine: This is the purest form of nicotine. It's not bound to any other molecule, so it's in its most basic, free form.
• Salt Nicotine: This is nicotine combined with an acid (usually benzoic acid) to create a more stable molecule. The acid lowers the pH level, making it smoother.

2. Vapor Smoothness:

• Freebase Nicotine: Can be harsh at higher nicotine strengths. Because it's alkaline, it tends to be more irritating to the throat, especially at higher concentrations.
• Salt Nicotine: Smoother and less harsh on the throat, even at higher nicotine strengths. This makes it ideal for higher-strength e-liquids (e.g., 20mg).

3. Nicotine Absorption:

• Freebase Nicotine: It has a slower absorption rate in the body because of the higher pH. This means it provides a more gradual hit of nicotine.
• Salt Nicotine: Absorbs faster, offering a quicker, more immediate nicotine hit. It's closer to the sensation of smoking a traditional cigarette.

4. Nicotine Strength:

• Freebase Nicotine: Typically found in lower strengths, ranging from 1.5mg to 12mg, though some higher strengths are available but very rare to find.
• Salt Nicotine: Usually found in higher strengths, typically in the range of up to 20mg.  This is due to the smoother throat hit allowing for higher nicotine concentrations.

5. Vape Experience:

• Freebase Nicotine: Best suited for sub-ohm vaping (larger vapor clouds, lower nicotine strengths) due to its harsher throat hit.
• Salt Nicotine: Ideal for MTL (mouth-to-lung) vaping styles, using pod systems or devices that don't produce massive clouds. It's commonly used in smaller, more discreet devices.

6. Flavor Profile:

• Freebase Nicotine: Can sometimes impact the flavor of the e-liquid due to its stronger throat hit, but it's generally considered to have a cleaner flavor.
• Salt Nicotine: The added acids can slightly affect the flavor profile, but many users find that it doesn’t impact the flavor as much as the throat hit does.

7. Device Compatibility:

• Freebase Nicotine: Works best with larger, high-power devices like box mods and sub-ohm tanks.
• Salt Nicotine: Works best with low-wattage, high-resistance devices like pod systems.

In Summary:

• Salt Nic: Smoother, faster nicotine hit, higher strengths, best for MTL vapers and pod systems.
• Freebase Nic: Harsh at high strengths, slower nicotine delivery, best for sub-ohm vapers and lower nicotine concentrations.

Here are some current offerings available at Underground Vapes.

Freebase Device: Freemax Maxus 3 200w Kit

Salt Nic Device: Uwell Caliburn G3

Both Device:  UWell Havok

Freebase E-liquid:  Record Vapes 100ml

SOS: 60ml Salt Nic Bottles (0-20mg/ml)

30ml Salt Nic Bottles:  30ml Salt Nics