A pyramid provides narrative guidance
Top, heart and base notes organise a description of how a perfume develops. They are neither a complete recipe nor a timetable that applies equally to every skin. The presentation of Bal d’Afrique, for example, connects an opening, a floral heart and a woody base to make the composition easier to imagine before trying it.
Observing transitions instead of fixed compartments
Baccarat Rouge and Miss Dior show other ways of presenting accords and materials. During a trial, record what changes and what persists without forcing every impression into a particular tier. Some sensations overlap; this continuity explains why attentive fragrance discovery extends beyond simply adding together three separate published lists of perfume notes.