1Improve Skin Problems: The filter help balance the PH value of water and release beneficial minerals to improve dry and itchy skin, dandruff, dry hair, fragile nails, etc. 2Universal: The filter is suitable for the elderly, pregnant women, infants and families. Choose and use it at will! 3Wide Compatibility: The filter is applicable to all shower types, including fixed overhead shower, rain shower, hand held shower and combination shower set. 4Long Life Span: The package contains 2 filter cores. One is already in the shower filter cover, and the other is used for future replacement. At least one year or 24000 gallons of water can be used. 5Rust Resistant: Effectively meet the requirements of bathing water, no electricity, no waste water, energy conservation and environmental protection, no fading, no rust!