What Are Top, Middle and Base Notes in Perfume? The Pyramid Explained
By Emmanuelle Moeglin, Founder & Perfumer
In short
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Top notes open the scent and fade within roughly 10 to 30 minutes.
2
Heart notes carry its character for several hours.
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Base notes linger longest: many hours on skin, days on fabric.
Top, middle and base notes are the three stages in which a perfume unfolds on your skin, grouped by how quickly their materials evaporate. Top notes are the bright opening you smell for roughly the first 10 to 30 minutes, middle (heart) notes carry the fragrance's character for the next few hours, and base notes are the deep, slow materials that linger longest, for many hours on skin.
Spray a perfume and smell it again an hour later: it is not the same scent. The bright opening has gone, a softer heart has arrived, and by evening only a warm trace remains on your skin. That change is not a flaw. It is how every fragrance is built.
Perfumers describe it as the olfactory pyramid: top notes, middle (or heart) notes and base notes. Understanding it changes how you choose, wear and blend fragrance, so here is how I explain it to students in the lab, and how it guides you when you blend your own.
Citrus dominates the top notes.
What is the fragrance pyramid?
Every perfume is a mix of materials that evaporate at different speeds. Light, small molecules lift off the skin within minutes; heavier ones take hours, sometimes days. The pyramid simply groups them by that speed: the quickest at the top, the slowest at the base.
In reality it is a curve rather than three neat floors, and some modern fragrances are composed to smell almost the same from start to finish. But the pyramid remains the best map we have for how a scent unfolds.
Top, middle and base notes at a glance
| Tier of the pyramid | When you smell it | How long it lasts, roughly | Typical materials | EPC family |
|---|---|---|---|---|
| Top | First few minutes | Roughly 10 to 30 minutes | Bergamot, lemon, mandarin, pink peppercorn, green notes | Fresh |
| Middle (heart) | From around 15 minutes | Several hours | Rose, jasmine, orange blossom, iris, spices | Mellow |
| Base (drydown) | Builds over the first hour | Many hours on skin, days on fabric | Sandalwood, cedar, musks, amber, vanilla, Ambroxan | Deep |
Top notes: the first impression
Top notes are what you smell in the first moments: bright, fresh and sometimes sharp. They are the most volatile materials in the formula, strongest for the first few minutes and largely gone after roughly 10 to 30 minutes.
Citrus dominates this group (bergamot, lemon, mandarin, grapefruit), alongside green notes, light fruits and sparkling spices such as pink peppercorn. Their job is to make an entrance and to open the door for the heart.
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Second tier
Middle notes: the heart of the fragrance
Middle notes, usually called heart notes, appear as the top notes fade, from around 15 minutes onwards, and can last for several hours. They are neither fresh nor deep: they are the balancing, mellow core that carries the fragrance's character.
Most florals sit here (rose, jasmine, orange blossom, iris), along with many spices and fruity notes. The heart is often the most complex part of a formula, because it has to bridge the bright top and the warm base.
Rose, one of the florals at the heart.
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Third tier
Base notes: the drydown
Base notes are the least volatile materials and the slowest to evaporate. They take a while to reveal themselves, then linger for hours on skin and for days on clothes and scarves. This final phase is called the drydown.
Woods, resins, musks, amber and vanilla belong here, as do modern molecules such as Ambroxan and Iso E Super. They give a fragrance its depth and staying power, and they warm up the lighter notes above them.
From the perfumer's lab
When I evaluate a formula, I never judge it in the first minute. I dip a blotter and smell it straight away, again after an hour, and again the next morning. But a blotter only tells half the story: I always test on skin too and follow it through the day, because warmth and skin chemistry change how every stage behaves. A perfume that is beautiful at the top but collapses by lunchtime has failed. The base is where the real work hides: materials such as sandalwood, musks and Ambroxan anchor the composition and give it tenacity, holding the lighter notes in place as they unfold. Getting that balance right is what makes a scent wear well, not just smell good on a strip.
Emmanuelle Moeglin
Common misconceptions about top, middle and base notes
"A perfume is three separate tiers."
It is not. Every material starts to evaporate the moment you spray, just at different speeds, so what you smell is a continuum: a balance that shifts minute by minute as the quickest notes thin out and the slower ones come forward. The pyramid is a map of that movement, not three floors stacked on top of one another.
"Every note belongs to one tier."
Many do not. A natural oil such as lavender or rose is a mixture of many molecules, some quick and some slow, which is why lavender appears as a top note in some pyramids and a heart note in others. Diffusive woody-amber molecules such as Ambroxan can be noticed early on and still be there in the drydown. Even a single fragrance in our range has a full structure of its own: Sandalwood Musk is lit by a spark of pink peppercorn before its creamy sandalwood settles in.
"The order is the same on everyone."
The sequence holds, but your skin sets the pace. Warmth speeds up evaporation, so on warm skin, or on a hot day, the top passes faster and the heart and base arrive sooner. Dry skin tends to hold fragrance less well than moisturised skin, so the opening can vanish quickly and the base can seem to arrive almost at once. Your skin's own scent mingles with the base too. That is why the same perfume wears so differently on two people, and why it pays to test a fragrance on your own skin.
"The first spray tells you what a perfume is."
It only tells you how it opens. The heart and the base are what you live with all day, so give any fragrance at least an hour before you decide.
How the notes pyramid works in the Art of Blending
At EPC the pyramid is not just theory: it is the structure behind the Art of Blending, our way of composing a personal scent by combining finished fragrances rather than raw materials. Our nine Essentials sit in three families of three, and each family maps onto one tier of the pyramid: Fresh for the top, Mellow for the heart and Deep for the base.
Fresh at the top, Mellow in the heart, Deep at the base.
| Tier | EPC family | What it brings to a blend | The Essentials |
|---|---|---|---|
| Top | Fresh | Lift, brightness and the first impression | Bergamot Incense, Fig Neroli, Cardamom Moss |
| Heart | Mellow | Softness, body and character | Jasmine Osmanthus, Rose Rhubarb, Tonka Sesame |
| Base | Deep | Depth, warmth and staying power | Sandalwood Musk, Amber Iris, Cedarwood Absinth |
Each Essential is a complete fragrance, made to be worn alone or blended. Its family tells you where its character sits, and so which role it plays when you combine it with others.
The pyramid in our Essentials
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First tier
Two Essentials, one Blend
Bestseller · Blend
Sable Gris
Pink peppercorn, Ambroxan, white musks and sandalwood: the shore after the tide.
How do you build a balanced blend from one of each?
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Choose your base first.
The Deep sets the mood and the staying power: creamy sandalwood and soft leather, a rich resinous amber, or aromatic woods with tobacco.
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Add a heart.
The Mellow gives the blend its character: radiant white flowers, a tart and jammy rose, or toasted sesame and nuts.
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Finish with a top.
The Fresh decides the first impression: bergamot with incense, green fig leaf and neroli, or cool cardamom and ginger.
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Go lightly, then adjust.
Start with a little of each, smell the blend straight away, after an hour and the next day, and write down your proportions. If it feels too sharp, a touch more of the Deep brings warmth; if it feels too sweet, more of the Fresh brings back a clean bite.
Fig Neroli over Sandalwood Musk is still a good place to start. Add Rose Rhubarb between them and you have a full pyramid without any formula: green and bright at the top, a juicy rose at the heart, creamy woods underneath.
The simplest way to try it is the Build Your Own Creation Set: you choose one Top (fresh), one Mid (soft) and one Base (warm) Essential, and the set comes with your own blending bottle and a Blending Guide of suggested blends. If you would rather start from a curated trio, the Creation Set Olfactory Library has three themes: Creation Set Journey, exotic, warm and adventurous; Creation Set Garden, fresh, floral and radiant; and Creation Set Gourmet, sweet, spicy and indulgent. For the full method, read my guide on how to blend a fragrance.
The pyramid also explains why a scent can feel short-lived: if it leans heavily on top notes, there is little left after the first hour.
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Frequently asked questions about top, middle and base notes
What are top, middle and base notes?
The three stages of a fragrance, grouped by how fast their materials evaporate: bright top notes first, a heart in the middle, and deep base notes that linger longest.
How long do top notes last?
Usually 10 to 30 minutes. They are the most volatile materials in a perfume, which is why the opening fades so quickly.
What is the difference between heart notes and base notes?
Heart notes carry the fragrance's character for a few hours; base notes evaporate slowest and give depth and staying power for many hours.
Why does my perfume smell different after an hour?
The top notes have evaporated and the heart has taken over. Later still, only the base remains. This shift is the pyramid at work.
Which perfume notes last the longest?
Base notes: woods, musks, resins, amber, vanilla and molecules such as Ambroxan. On fabric they can last for days.
Do all perfumes follow the pyramid?
Most do. Some modern fragrances are deliberately linear, smelling much the same from first spray to drydown.
How do I choose top, middle and base notes when blending my own perfume?
Pick one from each tier: a fresh top for the opening, a soft heart for the character and a deep base for staying power. With our Essentials that means one Fresh, one Mellow and one Deep. Start with a little of each, smell the blend over an hour and adjust: more Deep for warmth, more Fresh for lift.
Can one ingredient be a top, middle and base note?
In a sense, yes. Natural oils contain both quick and slow molecules, and diffusive molecules such as Ambroxan can be noticed early and still linger in the drydown. The pyramid groups each material by where it mostly sits.
Emmanuelle Moeglin is the founder and perfumer behind Experimental Perfume Club. Classically trained at ISIPCA, with 20 years in the fragrance industry, she is a member of the French Society of Perfumers, a multi-award-winning creator and a public speaker. She designs the brand's blends and teaches perfumery from EPC's central London studio.
Smell all nine Essentials side by side with the Discovery Set, blend your own pyramid at a Luxe Blending Experience in central London, or learn to compose like a perfumer on our Fundamentals of Perfume Creation programme.
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