Fragrances are typically composed of multiple scents, which are combined to create a more complex and interesting overall aroma. The different scents that make up a fragrance are referred to as "notes." There are three types of notes: top notes, heart notes, and base notes.

Top notes are the initial scents that you smell when you first apply a fragrance. They are typically lighter, fresher scents that evaporate quickly.

Heart notes are the scents that are more prominent once the top notes have evaporated.

Base notes are the scents that are most long-lasting in a fragrance. They are typically the heaviest and most complex scents, and they last the longest.