Spray a room mist and smell it immediately, then smell the same spot again in ten minutes. It's not your imagination — it's genuinely a different smell. Fragrance is built to do exactly that.
The three stages
Top notes are the smallest, lightest molecules in the blend. They evaporate first and fastest, which is why they're what you smell in the first thirty seconds — bright and immediate. They're also the first thing to disappear.
Heart notes take over next. Heavier than the top notes, so slower to evaporate, they form what most people would call the actual "smell" of a fragrance if you stopped and asked them to describe it. This is the note that carries through the middle of a scent's life.
Base notes are the slowest, heaviest molecules of all. Barely noticeable at first, sitting quietly underneath everything else, they're what's still faintly there an hour later once the top and heart notes have faded. They're also why a fragrance can smell slightly different on fabric than it did in the air a moment before.
Try it with one of ours
Sunday Morning opens with sweet orange — that's the top note, bright and immediate, the first thing you smell. Give it a few minutes and the clove moves in underneath it, a little warmer and spicier. What lingers longest is the vanilla base: quiet, golden warmth that's still there long after the orange has gone. Three notes, three separate exits, one candle.
It's the same reason a mist smells slightly different in a warm room than a cold one — heat speeds up evaporation, so the whole three-act structure plays out faster.
Is this an unreasonably detailed way to think about a room spray? Possibly. We stand by it anyway.