In my personal experience it lasts at least five hours probably longer. That might be just me and due to my chemistry though. I can say this because the stuff has such a marked and visible effect on those around me - that it is easy to spot if their “I want to be with you” impulse has worn off. It was still there - admittedly it might have been a little less potent but still very much there - five hours after application, just before I left and did stuff alone.
May