It does help to reduce stress. It won't make it all go away, but it does provide a calming sensation. And the smell does stay around for a few minutes, it's actually pretty strong. Be careful if you're sensitive to smells and may get a headache.
I don't know if it really reduces stress but the smell is really nice and lovely. Therefore I guess it would make you feel better for a small time period of using it. I highly recommend the candle though. Definitely helps you relax more.