Short Version 15 Stage Shower Filter Replacement Cartridge Chlorine Reducing Shower Water Head Filter POWERFUL FILTRATION - Uses a proprietary blend of filtration formulation fortified with minerals that rejuvenate hair and skin. EASY TO INSTALL - Simply remove old cartridge and replace new cartridge. No tools required. LONG LASTING - Each of our shower head filter water softener attachment cartridges is designed to filter our impurities and toxins from your shower water for a period of time. Every filter cartridge will provide filtered water for up to 2 months. Use the whole family and don’t worry about the soon shower cartridge replacement..