There are certain things you should do to maintain your Norelco shaver and keep it working optimally. We’ve listed them below, but please also check the product information provided by the manufacturer.  It’s important to follow their instructions to stay in line with your warranty. 1) Do regular cleaning - After each time you use your Norelco shaver, clean it according to the manufacturer’s instructions. If you have a waterproof model, you should be able to rinse the shaving unit under running water to get rid of foam residue, gel, and hair. Check to see if your model comes with a cleaning brush (most do), and use that to clean around the gears and small parts inside your shaver’s head. 2) Replace blades regularly - For most Norelco shavers, you should replace the the blades every 12 to 18 months. You may also need to replace them if you notice the performance declining. In our experience, ordering replacement blades for delivery every 6 months will deliver great performance for men with the thickest, toughest facial hair. Men with fine facial hair can replace the blades on their Norelco shaver every 8 months for like-new performance. You can wait longer, but we think replacing before your blades dull is the best approach. 3) Lubricate as needed - You should keep the shaving head and blades lubricated by using a lubricating spray or oil. We have an article listing a number of clipper oil substitutes you can use (some of which you may already have on hand) to save money. 4) Charge properly - Check your manufacturer’s product guide to find the charging instructions for your specific Norelco shaver model. It’s important to charge correctly to ensure battery performance and longevity. In our experience, leaving shavers (or any battery-powered device) plugged in all day, even after fully charged, is not best practice and can degrade the battery life of your device over time.