[. . . ] use only Philishave NIVEA FOR MEN Cool Skin (HQ160 or HQ161) cartridges. For hygienic reasons, we advise you to insert a new pump when you start using a new set of five cartridges. Take the pump (supplied in the same box) out of its bag and push it into the cartridge until it locks into position with a click. Move the release slide downwards and open the cover of the cartridge compartment. [. . . ] Rinse the shaving unit and the hair chamber with hot water (60cC - 80cC) after every use. Clean the shaving unit and the hair chamber by rinsing them under a hot tap for some time. Never dry the shaving unit with a towel or tissue as this may damage the shaving heads. Make sure the inside of the shaving unit and the hair chamber have been cleaned properly. 1 Clean the outside of the trimmer with the brush supplied after every use. Lubricate the trimmer teeth with a drop of sewing machine oil every six months. Replace the shaving heads every two years for optimal shaving results. Put the retaining frame back into the shaving unit, press the wheel and turn it clockwise. Replace damaged or worn shaving heads with Philishave HQ167 Cool Skin shaving heads only. Whether you have a pouch or a cassette depends on your type of shaver. Do not throw the batteries away with the normal household waste, but hand them in at an official collection point. You can also take the appliance to a Philips service centre, which will remove them for you and will dispose of them in an environmentally safe way. Let the shaver run until it stops, undo the screws and open the shaver. Do not put the shaver back into the charging stand after the batteries have been removed. The shaver comes with two different kinds of shaving emulsion: an emulsion for sensitive skin and a fresh gel. This gives you the opportunity to try them out and discover which one suits your skin type best. Press the pump button a few times until a sufficient amount of NIVEA FOR MEN shaving emulsion has been released to allow the shaving heads to move smoothly over your face again. The shaver has not been cleaned immediately after use and/or has not been rinsed long enough and/or the water used to rinse the shaver was not hot enough. [. . . ] The NIVEA FOR MEN shaving emulsion has changed colour or has turned watery. Cause 1: your skin has not yet become accustomed to this shaving system. Allow 2-3 weeks for your skin to get accustomed to this shaving system. If the irritation does not disappear within 24 hours, we advise you to stop using the shaving emulsion and to contact your doctor. [. . . ]