How long do you have to keep the ice on your ear to get it numb?

The amount of time it takes for ice to numb a specific area like the ear can vary depending on factors such as the thickness of the skin and the individual's pain tolerance. Typically, it can take around 10-15 minutes for ice to numb the skin and underlying tissues. It's important to monitor the area closely to avoid potential frostbite or skin damage from prolonged exposure to ice.