Oleoresin Capsicum

Pepper spray is a lachrymator product containing capsaicin as the active ingredient that irritates the eyes to cause burning and pain sensations, as well as temporary blindness. It is used as a less lethal weapon in policing, riot control, crowd control, and self-defense, including defense against dogs and bears. The active ingredient in pepper spray is derived from the fruit of plants in the genus Capsicum, including chilis in the form of oleoresin capsicum (OC). The effects of pepper spray include immediate closing of the eyes, difficulty breathing, runny nose, and coughing, with the average full effect lasting from 20 to 90 minutes. However, repeated exposure can result in long-lasting changes in corneal sensitivity, and there is a risk of death associated with its use, particularly for those with pre-existing medical conditions or who are subjected to restraining techniques that restrict breathing passages.learn more on wikipedia