How often do I need to replace electric shaver blades?
It depends on the manufacturer, but most tend to recommend replacing the foils and blades on electric shavers every 12 to 18 months. Of course, it may depend on how often you use it and how hard your beard is. Could you get away with waiting longer between replacements? Of course, you may notice a positive change when you finally trade in your old blade for a brand new one. Either way, it's cheaper than regular trips to the hairdresser.