The shaving head cleaning liquid is contained in a cassette; alcohol mixed with lemon and a little (oil to lubricate the blades of the head rasage.Facile for use with the device on which alights the razor. the cassette is inserted into the "appaezil and pressing the start button, the razor undergoes a thorough cleaning with liquid nettoyant.Très easy to use and when removing the shaver after cleaning it is ready for the shaving suivant.En addition, it saves a lot of time.