The note bursts forth with an initial sensation akin to a concentrated, effervescent zest – a vibrant, piercingly tart citrus that immediately brightens the olfactory landscape. It is distinctly more complex than lemon, possessing the verdant, slightly bitter edge of lime, yet tempered by the juicy sweetness and subtle floral nuances reminiscent of a kumquat or even a very young mandarin. Its texture is sharp and invigorating at first, almost sparkling, then settles into a juicy, aqueous quality, evoking the sensation of biting into a freshly sliced fruit. It exhibits moderate projection, tending to radiate a clean, uplifting aura. As a quintessential top note, its longevity is relatively fleeting, providing a brilliant, energetic opening that typically dissipates within the first hour, paving the way for the heart notes while leaving behind a ghost of its initial sparkle.