Heat sealed within the fibers of these body accessories is a revolutionary anti-bacterial treatment, formulated expressly for use on the body. In rigorous laboratory tests, this safe, odorless, invisible barrier has been proven to effectively prevent the growth of bacteria, mold and fungus even before they've had a chance to settle on the surface. Ingredients: Germ-proof your cleansing regimen. Earth Theraputics has devised a special process that heat-seals safe, gentle anti-bacterial agents into the fibers of this sponge. This revolutionary barrier prevents the growth of bacteria on the sponge even before it has a chance to settle. So there is no transfer of impurities from one washing to the next. cleansing begins with a fresh slate. Formulate expressly for use on the body, this anti-bacterial sponge fosters a healthy, germ-free cleansing environment. With every day use, anti bacterial benefits last for 3 months. For best results, replace with new sponge after this period. Made from 55% nylon&45% cotton.