The term notes in perfumes:

The scent notes of a perfume can consist of different phases of dispersion. These phases are called notes. There are 3 grades. These are the top note, middle note and base note.
The top note becomes noticeable after applying the perfume. It consists of the most volatile essences and is lost within 2-5 minutes.
The middle note is the most important part. It determines the character of the perfume. The most obvious form first appears on the skin and is usually persistent for 20 minutes.
The base note is the final part of the fragrance process. This part is the expression of true personality, perseverance and success. The durability of the perfume used varies depending on the concentration (approx. 6-8 hours).
To get a successful product, there must be a harmonious transition between the notes.