SAFETY ISN'T EXPENSIVE, IT'S PRICELESS! SMITH & WESSON active ingredient oleoresin capsicum (0.15-percent) affects the entire respiratory system. The active ingredient oleoresin capsicum (0.15 percent) is derived from hot peppers and affects the eyes, nose and entire respiratory system to restrict attackers from further aggression. This method of self defense is recommended and used by law enforcement and offers a fast acting way to immobilize attackers. Buy one for yourself and give one to a friend! PLEASE NOTE: We cannot legally ship this product to New York, Massachusetts or Wisconsin or outside the Continental US. We do not ship Pepper Spray to persons under the age of 18 years of age.