Fragrance Notes Explained: Top, Heart and Base

Fragrance notes describe the three layers of a scent by how quickly they evaporate. Top notes are the first impression and fade within 15 to 30 minutes. Heart notes are the main character and hold for two to four hours. Base notes are heavy, slow-evaporating molecules — woods, resins, musks — that anchor the blend and linger longest. In a candle, all three release at once from the melt pool, so the base note dominates the room.

Every candle description you've read lists three or four notes and assumes you can translate. Most people can't, which is why buying fragrance online feels like guessing. It doesn't have to.

The fragrance pyramid

Perfumers structure a blend in three tiers, ordered by volatility — how fast each molecule evaporates into the air.

Layer	Duration	Typical notes	Job
Top	15–30 min	Citrus, bergamot, mint, light herbs, sea salt, green leaves	The opening. Bright, sharp, gone quickly.
Heart	2–4 hours	Rose, jasmine, elderflower, lavender, cinnamon, geranium	The body of the scent. What people mean when they describe it.
Base	6+ hours	Sandalwood, cedar, oud, patchouli, amber, musk, vanilla, tonka	The anchor. Gives depth, slows the whole blend down, and is what lingers in a room after the flame is out.

Why a candle isn't a perfume

The pyramid was built to describe fragrance on skin, where body heat releases the layers in sequence over hours. A candle works differently in three ways worth knowing.

The layers release simultaneously. A melt pool at 50–60 °C volatilises top, heart and base together. You don't get a sequence — you get a blend, weighted toward whichever notes survive the heat best. That's the base.

Base notes dominate. Heavy molecules are heat-stable; light citrus tops burn off fast and can thin out over a long burn. This is why so many well-made candles are built on wood, resin and musk rather than on citrus — and why a candle described as "fresh citrus" often smells flatter than the description promised.

Cold throw and hot throw differ. Unlit, you smell mostly the top notes sitting on the wax surface — that's cold throw. Lit, you smell the whole blend led by the base — hot throw. A candle that smells thin in the shop can be the better one in the room, and vice versa. Never judge a candle on the sniff test alone.

The main fragrance families

• Woody — sandalwood, cedar, oud, vetiver. Dry, grounded, structural. Reads as considered rather than decorative. The backbone of most unisex fragrance.
• Amber and resinous — amber, labdanum, frankincense, myrrh. Warm, dense, slightly smoky. Old and ceremonial in feel.
• Earthy — patchouli, vetiver, moss, soil notes. Damp, dark, mineral. The note that makes a fragrance feel like a place rather than a product.
• Floral — rose, jasmine, elderflower, neroli. Ranges from powdery and traditional to green and sharp depending on what sits underneath.
• Fresh and green — sea salt, linen, eucalyptus, pine, cut grass. Clean and open. Best in bathrooms, kitchens and small rooms.
• Gourmand — vanilla, tonka, tobacco, caramel. Sweet and warm. Easy to overdo; done well, it reads as warmth rather than dessert.

Reading the Thermelis line by note structure

Six scents, and the note lists tell you more about which is right for you than the names do.

Earth & Velvet — patchouli, musk, vanilla

Three base notes and nothing else. No top layer to burn off, which is why it holds so steadily across a long burn and why it's our best seller. Earthy patchouli held down by musk, with vanilla stopping it from going austere. Grounded rather than sweet. Living rooms, studies, late evenings.

Amber & Oud — ambergris, oud, patchouli

Also base-heavy, and the darkest thing we make. Oud is a resinous, medicinal, slightly animal wood; ambergris gives it a salt-mineral warmth; patchouli grounds it. Dense and unfussy. Dining rooms, entrances, and anywhere you want the room to feel deliberate.

Forest Path — pine, eucalyptus, sandalwood

The only scent in the line with a genuinely fresh top. Pine and eucalyptus open sharp and cool, sandalwood catches them underneath so it doesn't read as cleaning product. Bathrooms, kitchens, mornings, and any room that's been closed up.

Floral Reverie — elderflower, rose, patchouli

A floral heart on an earthy base. The patchouli is what stops it being a traditional rose candle — it pulls the sweetness down and makes it wearable in a room where a soft floral would feel dated. Bedrooms, spring and summer.

Midnight Ember

Our darkest evening scent. Built to sit low and warm rather than announce itself.

French Linen — coming soon

The lightest thing we've made. Clean, dry, and built for rooms where the woody scents are too much.

How to choose without smelling it first

1. Read the base note, not the name. "Midnight Ember" tells you a mood; the base note tells you what the room will actually smell like in hour two.
2. Match the size to the room. Base-heavy woody scents fill space efficiently; fresh scents need to be closer to you. See 7.1 oz vs 10.6 oz for the room-size arithmetic.
3. Buy one from a family you already wear. If your fragrance is woody, your candle should probably be woody. People are far more consistent across categories than they expect.
4. Give it a full burn before you judge it. Two hours minimum. The first fifteen minutes are the least representative part of a candle's life.

Frequently asked questions

What are top, heart and base notes?

They are the three layers of a fragrance, ordered by how fast they evaporate. Top notes are the first impression and fade in 15–30 minutes. Heart notes form the main character and last two to four hours. Base notes — woods, resins, musks, vanilla — evaporate slowest, anchor the blend and linger longest.

Do candles have top, heart and base notes?

Yes, but they behave differently than on skin. A melt pool releases all three layers at once rather than in sequence, and the heavier base notes dominate because they are the most heat-stable. That is why most well-built candles are constructed on wood, resin or musk rather than on citrus.

What is the difference between cold throw and hot throw?

Cold throw is how a candle smells unlit, which is mostly its top notes sitting on the wax surface. Hot throw is how it smells burning, which is the full blend led by the base notes. A candle can smell faint unlit and fill a room when burning, so the sniff test alone is unreliable.

Why does my candle smell different after an hour?

The lighter top notes volatilise first and burn off within the first half hour, leaving the heart and base to carry the rest of the burn. Scents built mainly on base notes change least over a long burn, which is why they tend to feel more consistent.

What are the main fragrance families?

The most common groupings are woody, amber and resinous, earthy, floral, fresh or green, and gourmand. Most candle blends combine two or three — for example a floral heart on an earthy base, or a fresh top over a woody base.

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Every Thermelis jar lists its full note structure on the label — hand-poured 100% soy, matte black glass, 35 or 50 hours. See the collection.