1. 20STAGES FILTRATIONOur shower filter replacement cartridges feature a 20stage filtration system that effectively reduces harmful substances, dirt, and bad smell. It helps control the growth of scale, which is linked to dry, itchy skin, eczema, acne, and illhealth. 2. UNIVERSAL SHOWER HEAD FILTEROur output filter is compatible with both cold and hot water. It features a 1/2' thread connector, making it suitable for shower heads, hand showers, and under sink installations. 3. FILTEROur multistage filter is recognized as one of the in improving the condition of your skin, hair, and nails. It helps reduce dry itchy skin, dandruff, and eczema. Experience the benefits of our unique filtration system. 4. HOW IT WORKSOur shower filter cartridges use a proven blend of redox media, calcium sulfite, and activated carbon to quickly and naturally eliminate impurities in city water, hard water, and well water systems. Say goodbye to the smell and enjoy cleaner water.