A fragrance pyramid sorts the notes of a perfume by the order in which you smell them: the top notes when you spray, then the heart, then the base. The ranking rests on how fast each material evaporates. It is a useful reading tool when choosing a fragrance, as long as you know what it leaves out.
A classification based on volatility
A perfume is a blend of aromatic materials that do not evaporate at the same speed. The lightest, most volatile ones leave the skin quickly. The heaviest ones stay for hours. What you smell therefore changes over the day, because the mix of materials still present on your skin keeps changing.
The idea of ranking scents by degree is old. In the 19th century, the perfumer and chemist Septimus Piesse compared scents to the notes of a musical scale in The Art of Perfumery, published in 1857. The word "note" comes from that analogy. His musical theory of smell was later abandoned, but the vocabulary stuck.
The modern version owes a lot to the British author William A. Poucher, whose perfumery treatise went through many editions. In 1955, in the Journal of the Society of Cosmetic Chemists, he ranked perfumery materials on an evaporation coefficient from 1 to 100. Materials rated 1 to 14 were top notes, 15 to 60 middle notes, and 61 to 100 base notes, which he also called fixatives. His table has aged, but the three-tier reading owes a great deal to it.
What each tier does
Top notes
These are the first impressions, the ones you notice as you spray. They are mostly citrus (bergamot, lemon, mandarin), aromatic herbs, mint, and some fresh spices such as cardamom or pink pepper. They give the fragrance its lift and are the first to fade. Judging a perfume on its first few minutes gives you an incomplete picture.
Heart notes
They take over as the top fades and carry the character of the fragrance for the following hours. Flowers often sit here, along with warm spices, fruit and some green notes. This is the tier that comes closest to what the perfume "is" for the person wearing it.
Base notes
These are the heaviest materials: woods, resins, musks, vanilla, amber, patchouli, oud. They are present from the very first second, but masked by the more volatile notes. They become readable once the rest has evaporated, and they linger on skin and clothing. They carry most of a fragrance's longevity. They also slow down the evaporation of other materials, which is why they are called fixatives.
How long each tier lasts depends on the formula, the concentration and your skin. No fixed rule tells you how many minutes a top note lasts. Our product pages show an overall longevity, for example "10h+", plus 5-point gauges for longevity, sillage and projection. For the effect of concentration on wear time, see our article on extrait de parfum, eau de parfum and eau de toilette.
Six pyramids from our catalog, read closely
The examples below use the notes published on our product pages. They show very different ways of spreading a fragrance across three tiers.
A textbook pyramid
Timber Suit, by Tada Parfumeur, follows the model almost to the letter. Lemon, cardamom and spearmint on top, pine, juniper berry and cypress in the heart, then Ambroxan, suede and cedarwood in the base. Each tier has its own logic: bright notes, then aromatic conifers, then woods and a soft leather that stay. You can predict the drydown fairly well just by reading the page, which files it as woody, spicy and citrus.
A fragrance built from the base
Fever, by Aaron Terence Hughes, has a single top note, bergamot, and a single heart note, plum. The base lists seven: Madagascar vanilla, heliotropin, amber, tonka bean, honey, sandalwood and white musk. That imbalance says it all. The opening is short and what you mostly wear is the base, vanilla and amber. The page lists an extrait de parfum at 35% with 10h+ longevity, which fits a formula loaded with heavy materials.
A fragrance built from the top
Gin Sling, from the same house, does the opposite. The top brings together gin, tonic water and lemon, the heart ginger, nutmeg and pink grapefruit, and the base is white musk alone. The fragrance bets on freshness, rated 5 out of 5 on its page, and its longevity is shorter than Fever's: 8h+ and a gauge of 3 out of 5. The grapefruit placed in the heart also shows that citrus does not always stay on top when the perfumer props it up with spices.
One material on two tiers
Aged Pu-Er Tea, by Zhufu, has a short pyramid: pu-erh tea and bergamot on top, cedarwood and vetiver in the heart, sandalwood and vetiver in the base. Vetiver appears twice. That is a way of saying a material runs through the whole fragrance instead of showing up at one specific moment. With so few notes, the evolution stays tight around the tea and the woods.
A base material listed on top
Oborotsuki, by Tada Parfumeur, opens on Thai oud, camphor and incense. The heart brings jatamansi, rose otto and vetiver, the base Australian sandalwood, patchouli and orris concrete. Oud is normally a base material. Listing it on top signals that you smell it from the opening, which is possible because heavy materials are there from the start. Our article what is oud covers this material in detail, and our profile of Tada Parfumeur introduces the house.
Notes that describe an image
Tonkin Tonka 3, by The Unleashed Apothecary, lists fresh snow, icy pine, frozen breath and cold steel on top. Only pine names a known material. The other terms describe a sensation, which the perfumer builds with accords. The heart brings tonka bean, warm skin and bitter almond, the base Tonkin musk, deer leather, body heat, fur and benzoin. Here the pyramid reads like a story, from cold to the warmth of skin. Its page rates it 5 out of 5 for longevity and sillage.
For more pyramids centered on woods, browse our woody collection. Fragrances where freshness leads are in our fresh collection.
The limits of the model
The pyramid simplifies a continuous process. All materials evaporate at the same time, at different speeds. There is no clean switch from one tier to the next, rather a gradual slide. On skin, the top and heart often overlap for a long while.
Some fragrances barely change. They are called linear. They are built around a single accord or a small number of materials that stay stable from start to finish. For them, splitting notes into three tiers makes little sense, and some houses simply publish a list of notes.
A published pyramid is also a piece of presentation copy. The house chooses which notes to highlight and where to put them. It does not reveal its formula, which may contain dozens of unlisted materials. A note such as "clean skin accord" or "frozen breath" names an effect, not an ingredient. Two fragrances with similar pyramids can smell very different depending on dosage and the quality of the materials.
Using the pyramid to choose
Read the base first. It is what you will smell the longest, and what will still be on your scarf the next day. If you dislike patchouli or vanilla, an appealing citrus top will not change what follows.
Next, look for materials that keep coming back in the fragrances you already love. If several of your favorites have vetiver or incense in the base, that is a solid lead. Fragrance families help you move faster: our guide to the eight fragrance families explains how they are built.
Finally, look at the balance between tiers. A heavy top and a light base, like Gin Sling, make a bright fragrance with shorter longevity according to our pages. A dense base, like Fever, signals a fragrance where you mostly wear the drydown, and for a long time.
The pyramid does not replace a test. Only your skin shows how the tiers unfold on you. Wear the fragrance for a full day and smell it at several points. Our article on getting the most from a 2 ml sample gives a simple method.
Frequently asked questions
How long do top notes last?
There is no fixed duration. Citrus and aromatic notes usually soften fairly quickly, often well before the heart takes over. In a concentrated extrait, or when the perfumer supports them with other materials, they can stay noticeable for longer.
Why does my perfume smell different after an hour?
Because the top notes have evaporated and the heart now leads. This change is normal and intended. If you mostly liked the opening, look for compositions whose heart repeats the same materials.
Are base notes present from the start?
Yes. Every material is in the bottle and on your skin from the moment you spray. Base notes are simply covered at first by the more volatile materials. You notice them more as those fade.
What is a linear fragrance?
It is a fragrance that smells roughly the same from opening to drydown. It relies on a stable accord or on a few materials with similar volatility. Some people enjoy that consistency, others prefer a fragrance that evolves.
Does a fragrance pyramid list every ingredient?
No. It shows the notes the house chooses to highlight. The actual formula often contains far more materials, and some listed notes are accords that evoke a smell without being a single material.
This topic is part of our Understanding perfume guide. To follow the top, heart and base on your own skin, every fragrance mentioned here is available as a 2 ml sample on our samples page.