What best describes the typical onset and duration of OC spray effects?

• A. Effects typically onset within seconds to minutes and can last longer than some tear gas exposures
• B. Effects onset after hours
• C. No effect
• D. Effects last only seconds

Answer: (A)

OC spray causes effects to begin very quickly because capsaicin strongly activates the sensory nerves in the eyes, face, and airways. Most people notice burning, tearing, and a stinging sensation within seconds to minutes after exposure, not hours. The irritation tends to last longer than many tear gas exposures because the capsaicin sticks to skin and mucous membranes and keeps irritating the nerves until it’s washed away and the tissues recover, which commonly takes about 15–60 minutes and can be longer depending on exposure and environment. This combination of rapid onset and relatively prolonged irritation is what makes that description the best fit.