It lasts a long time (in the sense of consistent quality). I bought it five years ago and only used it when my nails were dry, so it didn't run out easily. I left it in a hot room in the middle of summer and it's been through summer after summer, and it still smells great. Of course, using it for that long is at your own risk, but it's definitely "good value for money." I don't think there's much point in applying too much, so a little is enough. It's a thick serum, so if you apply it thinly and let it blend in, it doesn't feel sticky. Unlike regular nail oils, it doesn't run off, so there's no waste. It's easy to apply, as you can adjust the amount by pressing a little at a time. The light apricot scent is also nice.