The fragrance pyramid
Perfumers structure fragrances as a pyramid of three layers: top notes, middle notes (also called heart notes), and base notes. Each layer has a different volatility — how quickly it evaporates — and each creates a different impression at a different point in the fragrance's life on your skin.
Top notes — the first impression
Top notes are the first thing you smell when you apply a fragrance and the first to disappear, typically within 15 to 30 minutes. They're composed of highly volatile aromatic molecules that evaporate quickly. Common top notes include citrus (bergamot, lemon, grapefruit), light herbs (lavender, basil), and some clean aldehydic accords.
Top notes create the opening impression but rarely represent the full character of a fragrance. Judging a fragrance entirely from its first spray often leads to missing what makes it genuinely interesting.
Middle notes — the heart
Middle notes emerge after the top notes fade and form the core character of the fragrance. They typically last 30 minutes to three hours depending on concentration and skin chemistry. Common middle notes include florals (rose, jasmine, ylang-ylang), spices (cardamom, pepper, cinnamon), and some light woods.
The heart is what most people mean when they describe a fragrance's character. If you're evaluating whether you like a fragrance, the 20-to-40 minute mark on skin is usually the most honest reading.
Base notes — the foundation
Base notes are the heaviest, least volatile molecules in the fragrance. They emerge gradually as the top and middle notes fade and can last several hours or all day. Common base notes include musks, woods (sandalwood, cedarwood, oud), resins and balsams (labdanum, benzoin), vanilla, and ambers.
Base notes anchor a fragrance and determine its longevity. They're also the most important layer when it comes to layering, because they interact directly with your skin chemistry and provide the structure other fragrances sit on top of.
Why notes matter for layering
When you layer two fragrances, their note pyramids interact. The base notes of both fragrances will merge most completely because they share the longest time on skin together. Top notes interact briefly but often determine the opening impression of the combined mix. Understanding this helps you choose combinations intentionally rather than by trial and error.
Explore how specific fragrances interact in the MixMode.