E-liquid refers to a liquid solution typically used in e-vapor products, also known as vapes or e-cigarettes. E-liquids generally contain different levels of nicotine, flavors, and glycerin and/or propylene glycol. 

An e-cigarette heats the e-liquid to produce a vapor that the user inhales. Other names for an e-liquid are vape juice, e-juice or e-fluid.

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