Leaves your shaver thoroughly and hygienically clean for a better shaving performance every day The shaved stubbles and debris are cleaned and stored in the cleaning cartridge Daily use will enable approximately one month cleaning from one cartridge Fluid cleans and lubricates razor automatically The replaceable cartridges for the Braun Syncro (models 7526, 7546, 7680), Activator (models 8585 and 8595), and Flex XP System (model 5790) Shavers