What is the primary difference in performance between 10 percent DEET and 30 percent DEET?
Answer
The 30 percent version provides a longer duration of protection before reapplication is necessary
The percentage of an active ingredient, such as DEET, correlates primarily with the longevity of the protection rather than the intensity of the initial repellent effect. Both low and high concentrations are generally capable of repelling insects effectively upon initial application. The higher percentage allows the compound to remain active on the skin for a longer period of time, effectively delaying the point at which the concentration drops below an effective threshold and requiring the user to reapply.
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