1.NOTE:This 2 pack replacement filter cartridges only fit for filtered handheld shower heads (ASIN: B0D1XSMJMG, B0D1XPR12X, B0D1XCBHDM, B0D1XKB3RW, B0D1Y42KTH) . It won't fit for shower heads from other brands. 2.Advanced Shower Water Filtration: This shower head filter replacement is engineered with advanced multi-layer materials meticulously designed to effectively eliminate common contaminants such as chlorine, fluoride, heavy metals, and other impurities found in water, ensuring clean and y shower water to nurture the well-being of you and your family. 3.Healthier Skin and Hair: This shower filter not only softens the water quality but also eliminates unpleasant odors, resulting in a rejuvenating bathing experience. Furthermore, this advanced filtration process significantly enhances the condition of your skin and hair, leaving them feeling smoother, silkier, and more radiant. 4.Convenient Filter Replacement: Simply separate the handheld showerhead and the handle, remove the old filter, insert the filter, and screw the handle onto the showerhead to complete the filter replacement process. The frequency of filter replacement depends on the water quality and bathing frequency in your area. We recommend replacing the filter every 3-6 months for optimal performance.