What is an e-cigarette?

An Electronic cigarette (e-cig) is a portable, battery-powered device that simulates smoking by vaporising E-liquid (containing PG and/or VG) and flavouring yet still delivering nicotine (nicotine levels can vary, down to 0 mg, depending on what the user wants), but without the other 3,999+ chemicals hidden in cigarettes. It generates a smoke-like vapour and provides the same hand-to-mouth, inhalation experience as smoking. It has been shown to reduce cravings among smokers, not just for nicotine, but also for the relaxation, associated with inhaling and exhaling vapour.