[Advanced Micro Sediment Filtration] Our PureFilter uses micro sediment filters similar to those in water purifiers, effectively removing rust, dust, and other impurities as small as 1µm to 5µm, ensuring a clean and healthy shower experience. [Protects Against Pipe Contaminants] Ideal for homes with old plumbing systems, this filter captures particulate matter from aged pipes, preventing potential skin problems caused by impurities in the water. [Durable and Efficient Design] Designed with fine fiber structures, the PureFilter cartridge provides consistent filtration, ensuring that old plumbing issues do not affect your shower water quality. [Easy Replacement Cycle] Depending on your home water quality, the recommended replacement cycle is every 1-2 months. Visually inspect the filter for significant contamination or reduced water pressure to know when to replace it. BODYLUV Pure Filter Cartridge for showerhead, 1 pack of 3 replacement cartridge