Nicotine liquid refers to a solution containing nicotine that is commonly used in the production of e-liquids for vaping. It is available in various concentrations, allowing vapers to choose their desired nicotine strength. Nicotine liquid is typically combined with other ingredients such as propylene glycol (PG) and vegetable glycerin (VG) to create e-liquids with different flavor profiles and vaping experiences. When handling nicotine liquid, it's essential to exercise caution, as nicotine is a highly toxic substance. Proper safety protocols should be followed during handling, storage, and mixing to prevent accidents or exposure. Additionally, accurate measurements are crucial to ensure the safety and consistency of the final e-liquid product.