A prior review so that doesn't last long. But no nasal inhaler lasts long, but I found that this one is fresh and strong but not overpowering. And while I don't use it to unblock my nose, I use it as kind of a stimulant, like a cup of coffee, not quite as powerful long lasting, but it definitely wakes me up at my desk.And it also makes me feel more refreshed when I use it.And so easy to carry in my pocket love this one.