When scissors become dull, there are several ways to help you restore their sharpness:

1. Use a whetstone: Place the blade of the scissors on the whetstone and grind it back and forth at a certain angle. Be careful to keep the contact surface of the scissors blade and the whetstone consistent, and ensure that the force is even to avoid excessive wear on one side.
2. Use a ceramic sharpener: Ceramic sharpeners are more convenient than traditional whetstones and can sharpen the blades of scissors more quickly. Just slide the blade of the scissors back and forth on the sharpener a few times.
3. Use an electric sharpener: Electric sharpeners can sharpen the blades of scissors quickly and easily. Just place the blade of the scissors in the knife slot of the sharpener and press the switch.