The medium-grain powdered volcanic pumice polishes-up rough skin, while Red Arizona Montmorillonite Clay is cooling and refreshing for skin. Willow Bark Extract brings a clean feel that gives skin a poreless-looking finish. This mask does not tingle when used, and can be used either as a mask (if you don’t want to scrub), exfoliator (if you want a shiny, smooth look) or both, by exfoliating and then letting the mud dry before rinsing.