I have intensely dry skin. That means my body requires a mass of water in order for me to enjoy skin that is not flaky and rough. Even the driest skin, like mine, requires clarifying at times. I clarify my skin about once a month because the process is fairly drying. Clarifying the skin extracts excess oil and purifies the top layer of dirt. The main reason I clarify is to reduce the size of my pores and to give my skin a very good deep cleanse.
One of my favorite mud masks come from Target! Quebella offers come of the best and cheapest ($2 or less) asks available for wide spread use. This masks leaves your skin feeling fresh, tight, and definitely clean. You will need to apply a thick moisturizer immediately after to replenish your skin.