Understanding Fragrance Layers: Why Perfumes Smell Different Over Time Have you ever noticed that your perfume smells different throughout the day? This is because fragrances are carefully crafted with layers of scent that evolve over time, interacting with your skin’s natural chemistry. These layers, known as fragrance notes, are categorized into three levels: Top, Heart (Middle), and Base Notes. The Three Layers of a Perfume 1. Top Notes (The First...