Pepperspray

Pepper spray, or OC (oleoresin capsicum) spray, is a lachrymatory agent (meaning it can cause watery eyes and a runny nose), a compound that makes the eyes watery and restricts vision.

The active ingredient of pepper spray is also an inflammatory agent that swells the eyes and mucous membranes of the upper respiratory tract, causing pain (often temporary blindness). Pepper spray is used for self-defense against human and animal attacks, as well as riot and crowd control (by law enforcement agencies).

According to all available sources, pepper spray is the best-selling non-lethal self-defense product in the world