What should you do to control bleeding from a scalp injury?

To control bleeding from a scalp injury, applying direct pressure to the wound is the most effective method. Scalp injuries can produce significant bleeding due to the rich blood supply in the area. By using direct pressure, you help constrict the blood vessels and promote clot formation, which is crucial in stopping the bleeding.

It's important to ensure that you maintain pressure without lifting your hand to check the wound, as this can disrupt any clots that may be forming. If blood soaks through the bandage or cloth being used, additional layers should be added on top while continuing to apply pressure rather than removing the initial dressing, as this can also interfere with clotting.

Using an ice pack, while possibly helpful for swelling, does not directly address the bleeding and should not be the primary response. A tight bandage could impede blood flow or cause further injury. Pouring antiseptic on the wound at this stage is inappropriate; it can cause additional pain and is not a first-response measure for bleeding control.