In August, 1997, Fox Labs International, the recognized leader in self-defense spray innovation, introduced "MEAN GREEN" "H2OC"—a green, water-based defense spray formula using real, organic pepper resin rated at 3,000,000 Scoville Heat Units (SHU). This resin is so purified it is virtually clear. Not even FOX LABS' 5.3 million SHU resin used in their famous "FIVE POINT THREE" formulas is as pure.