How long should one ice a hematoma?

One should ice a hematoma for about 15 to 20 minutes every hour during the first 24 to 48 hours after the injury. It's important to use a cloth or towel to protect the skin from direct contact with the ice. After the initial period, icing can be done as needed to reduce swelling and pain. Always consult a healthcare professional for specific advice based on the injury.