Mace pepper spray is a 10% solution in a nationally reknowned brand name. Oleoresin Capsicum or OC is a naturally occurring substance derived from cayenne peppers. Superior formula of high-grade OC PEPPER is designed to make the eyes slam shut, cause uncontrollable coughing and choking, plus a painful burning sensation. Contains UV (ultraviolet) dye for easy indentification. This is the original Mace Brand name pepper spray. Mace has been a pioneer in making defensive sprays available to the public.