To stop a nosebleed, the person should tilt his head slightly forward, and use the thumb and forefinger to press down on the soft part of the nose, advises WebMD. Pressure should be kept in this area for at least 10 minutes before checking whether the bleeding has stopped.
It is important to avoid tilting the head back and applying such pressure, because this can lead to swallowing blood, which can irritate the stomach and cause vomiting, warns WebMD. A cold compress can be applied to the nose and cheeks area to help constrict the blood vessels and aid in stopping the bleeding. If the bleeding has not stopped after 10 minutes, the same procedure should be followed for 10 more minutes.