Give It Time
Testing a perfume properly is not just about smelling the opening and deciding whether you like it or not. A fragrance can change a lot after the first few minutes, so if you really want to understand it, you have to spend some time with the fragrance.
Testing Performance
Another way of testing a perfume is testing its performance. First of all, I should say that many people spray a perfume and after some time passes, when they occasionally smell it on themselves, they think the perfume is projecting. But this can sometimes, and actually quite often, be misleading because the person wearing the perfume will naturally smell it anyway. The best way to understand whether a perfume is actually projecting or not is to ask the people around you: “Can you smell my perfume?” or “Do you still smell it?” I should also mention that after some time, you may stop smelling a perfume completely, but this does not mean that the perfume is no longer there or that it is not projecting. The human brain can stop noticing the same smell after a while, and this is called nose blindness. And here is a little extra detail: perfumes that contain molecules like Ambroxan or Iso E Super can cause nose blindness quickly.