UBS Vitamin C Cartridge 5 Pc in 1 Pack for Vita-fresh Shower Filter, 8.82 Ounce N/A Imported Vitamin c shower filter cartridge for Vita Fresh Shower Filter. Comes with 5 pc in 1 pack (Useable for 8 months) per piece (About 6~8 weeks / Depend on water quality and usage Vitamin c shower filter cartridge for Vita Fresh Helps to improve the condition of skin and texture of hair. Using Vitamin C as de-chlorinating agent is 100% pharmaceutical food grade