When it comes to vaping, there are a few things you need to keep in mind. The first is that you should always clean your vape pen after each use. This includes cleaning the battery and atomizer, as well as the firing button and any other parts that may have been left dirty. Another thing you should do is to change your e-liquid often. This is because vape pens use nicotine in order to produce vapor, which can contain harmful chemicals. If you don’t change your e-liquid often, your vape pen may become contaminated with these chemicals.