You clean your E-cigarette by removing the cartridge from the atomizer and by blowing on the battery (on the side of the Led). You will see that the atomizer produces steam. Continue to do this for some 10 seconds so that the atomizer cleans itself. If the atomizer is not functioning properly, there may be too much liquid in it. If that is the case, you should wipe it dry. Make sure also that no strands stick out.