How do You Treat a Blood Blister?

You will want to drain the blood blister. In order to do this, you will first need to sterilize a sharp needle. You can do this with hot water or by using rubbing alcohol. Next pop the blister with the needle at the bottom near the edge of the blister. Allow the blood to drain out of the blister, clean the area with soap and water. Then apply antibiotic ointment and a bandage to it.