Braun - 4 Pack Refills Liquid Cleaner Clean & Renew System - CCR4 - fast opening and eco packaging (Health and Beauty)
These refills are very practical, removing the old and new hop is put. They are cheaper than 4 per unit, hence my purchase, but they are still super expensive. When the cartridge empties a bit, I add a little alcohol at 90 ° to the level go up a litt