Softer and Healthier Water Anion ball is added and filtered to remove impurities, chlorine, and some harmful minerals from the water. The shower gives every pore of every inch of skin a comfortable boost, so super-soft and healthy water quality is very important for the shower Negative Ionic balls Negative ionic balls remove chlorine, purify water, improve mineral nutrient absorption, reduce oil secretion and increase cell viability. Use friendly ABS material, with a transparent, see-through design and high-density filter which removable for easy cleaning, recommended to buy two, replace the use.......