How does oil-based OC spray differ from water-based OC spray?

Oil-based OC spray is typically formulated to have a higher concentration of oleoresin capsicum (OC), which is the active ingredient derived from chili peppers that causes the burning sensation and temporary incapacitation. This higher concentration often results in a higher Scoville Heat Unit (SHU) rating, making it more potent in terms of its ability to cause discomfort and disorientation in an assailant.

Oil-based formulations are designed to adhere to surfaces, including skin, more effectively than water-based sprays, which can be washed off with water. This adherence increases the effectiveness of the oil-based spray, as it remains on the target longer and is less likely to be immediately neutralized by rain, sweat, or other moisture.

This combination of higher concentration and increased adherence contributes to the overall effectiveness of oil-based OC spray in defensive situations, making it a preferred choice for law enforcement and personal defense in many cases.