Adhesive medical tape.
Damaged tissue does not take too kindly when contact is made with adhesive material, as the sticky nature of adhesives can rip cells off the wound. Thus, bandages and gauze are non-adhesive, so they do not stick at all. Medical tape, also known as surgical tape, initiates persistent pressure onto the material, pressing them onto the wound and holding them firmly in place. In the event of hemorrhaging, pressure on the wound can help stop the bleeding. Zinc oxide is often added to medical tapes, giving them their recognizable white color. This chemical aids in the prevention of infections. Some medical tapes are "breathable", allowing air to reach the skin.
Can be found in medical centers and first aid kits of all sizes.