The functionality of a cigarette or pipe is quite straightforward to understand. All you want to do is light a cigarette and inhale the smoke it produces. However, a vape pen is somewhat mysterious. However, the way it works is not sophisticated either. The distinction between these units and the traditional units is that they have a heating aspect instead of fire. Let’s find out more. Basically, when the tobacco, dry herb, oil or wax heats up, the chemical substances…