I've heard people on reddit say theyve had fragrances for 20+ years. There's no reason why the average fragrance shouldn't last at least 5 minimum.
Still have half a bottle left, love this fragrance its one of my fave... If I bought this how long would this last, unopened, so I could save for later use.
EDP as opposed to EDT :)
This is the Eau De Parfum (a more intense version) the version you're thinking of still exists too.
Is this the original one? Used to be a lighter bottle with a stripey etched t shirt?