The black konjac sponge gently exfoliates your face and is ideal for oily skin. Make the sponge a part of your skincare routine, whether you use it just with water or with your cleansing product. The sponge is made of powder from the konjac root and contains activated charcoal which absorbs excess oils from your skin. When the sponge comes into contact with water, it expands. Wet the sponge, add a cleaner if you like, and gently massage your neck and face. Rinse the sponge thoroughly after use. Keep the sponge clean by dipping it in boiling water once a week. Can be used every day.