Pepper Shot is a 10% pepper spray rated at 2 million scoville heat units and made with a very fine grain that is more effective than the coarser grains of most other pepper sprays. In addition to causing an attacker pain, Pepper Shot pepper spray swells the mucous membranes, which makes breathing difficult, and swells the veins in the eyes, causing the eyes to close. These effects last up to 45 minutes and cause no permanent damage. All key chain sprays have quick-key releases. All pepper sprays have locking actuators. All Pepper Shot brand pepper sprays have identifying dye.