Konjac Sponges are soft, natural, reusable, gentle physical exfoliants made out of a biodegradable substance called glucomannan, a nutritional dietary fiber sourced from a Japanese potato (or yam). They enhance the cleansing process of skin with (and even without) your regular facial cleanser.
Sponge can be used daily and will last for many weeks. Store sponge outside of the shower between uses, so that it may dry and prevent the harboring of bacterial growth. It is advised to occasionally boil (preferred) or microwave sponge to eliminate potential microbial contaminants.