Bois 1920 Elite I Parfum 100Ml Top Notes: This section lists the initial notes that you'll smell when you first apply the perfume. These notes are usually the most volatile and fleeting.Heart Notes: The heart notes describe the scents that become more prominent after the top notes have evaporated. These are often considered the core of the fragrance.Base Notes: Base notes are the foundation of the perfume and the scents that linger the longest. They provide depth and longevity to the fragrance.