The top notes are the initial, sharp, penetrating and fleeting compounds of the fragrance that hit the nose first. They introduce the perfume and form the first impression, then evaporate quickly. The top notes last around 15 minutes – 2 hours. Examples of these include citrus notes, herbaceous notes, spicy notes, and a few woody notes, floral notes and ozonic notes. They are considered modifiers and are often used in smaller concentrations to lift a fragrance.
