Absolutely! Like kitchen knives, the blades of shears will blunt over time. To make your life easier in the kitchen, you want to keep this tool sharp. You might be tempted to sharpen the blades while they are connected, but it is safer to dismantle them as explained before. All the methods available for regular knife sharpening apply here. A whetstone is recommended, though a sharpener or sandpaper can work well too. Remember that the blades of shears have single bevel edges. Also, some are serrated, so these sharpening techniques are not possible.