Sillage

Why a Citrus Perfume Fades Faster Than a Woody One: The Chemistry of Longevity and Sillage

Fragrance longevity and sillage are primarily determined by the molecular weight and volatility of ingredients, not just concentration. Lighter molecules like citrus evaporate quickly, while heavier woody or resinous molecules release gradually, impacting how long a scent lasts and its trail.