You can choose to wear it for 16 or 24 hours how does smart control technology work niquitin patches with unique smart control technology provide a rapid release of nicotine followed by a controlled and continued delivery of nicotine throughout the day for 24 hour craving control with nicotine in the adhesive niquitin patches release nicotine as soon as the patch is applied when worn for 24 hours they help protect against morning cravings double your chances of stopping smoking itrsq