liquid until it becomes a vapor, which is inhaled. The liquid (called e-liquid or "vape juice") can contain nicotine or marijuana distillate or oil. E-cigarettes can be refillable or pre-filled with cartridges containing the e-liquid. The pre-filled e-cigarettes (called "Puff Bars") are designed for one-time use. After taking a certain number of "puffs," the user throws the device away.
they're far less harmful than cigarettes, and can help you quit smoking for good.
They are not recommended for non-smokers and cannot be sold to people under 18 years old.