'Lotus' is an aquatic plant that grows in water which purifies polluted water and air that sorrounds it. It must have water to grow, similar to the fact that soap must have water to be used. 'Water-Plant Soap' consists of natural ingredients which returns to nature without polluting the water. Lotus' seed can be also germinated after using the soap. Therefore, the soap doesn't cause any damage to nature, making it environment-friendly.