Yes, you can load the chamber of the Extreme Q Glass Cyclone Bowl with as much or as little as you prefer. For microdoses, lightly tamp down a small amount of herbs so it stays packed together. Alternatively, after 1-2 draws just turn off the fan and/or heat, and leave the remaining material for future use. You can leave the bowl on top of your unit and none of the active components will be released; only when the warm air travels through your herbs will it produce vapor.