The note bursts forth with an immediate, vivid effervescence, a sparkling luminosity that feels both juicy and intensely zesty. It carries the bright, sweet tang of freshly peeled fruit, mingling the vibrant sharpness of the rind's essential oils with the succulent, slightly acidic sweetness of the pulp. There's a subtle, almost gourmand sweetness underlying its initial zing, reminiscent of sun-ripened fruit warmed by the Mediterranean sun. Its texture is smooth and luminous, never harsh or biting like lemon, but rather a rounded, cheerful acidity. As a quintessential top note, its projection is immediate and expansive, radiating a refreshing aura before gracefully receding to allow heart notes to emerge. Its longevity is typical of a citrus top note – vibrant for the first 15-30 minutes, then softening into a delicate, lingering freshness on the skin.