We offer both Nicotine Salt and Freebase Nicotine Vape Juice. Nic Salt E-liquid has become more popular of the two because it allows an abundance of nicotine while delivering a smooth hit. Nicotine Salts are the most efficient way to deliver high doses of nicotine to your body. Nic Salts are best used in low wattage devices such as Smok Nord / Novo or Suorin Air / Shine. Freebase nicotine is much more potent and is absorbed faster in your lungs and brain. Freebase nicotine is much harsher and generally requires high wattage (big tanks) devices referred to as Sub-Ohm.