Quick answer: Projection is how far a perfume radiates from your skin while you stand still; sillage is the trail it leaves in the air when you move or leave a room. Both are separate from longevity, which is how long the scent lasts. A perfume can project strongly and leave little trail, or sit close to you and still linger in a room.
Sillage vs projection is one of the most confusing pairs of terms in perfume, partly because people use them interchangeably. They describe different things, and knowing the difference helps you choose a scent for the office, an evening out or a long day. Below we define both, explain what drives them, and show how they vary across real perfumes in our range, using the ratings from the Mykonos brand handbook.
Sillage vs projection: the difference
| Term | What it describes | Who notices it | The question it answers |
|---|---|---|---|
| Projection | How far the scent radiates from your skin | People near you | Can people smell it at arm's length? |
| Sillage | The trail left behind as you move | People you pass, or who enter a room after you | Does it linger after I walk past? |
| Longevity | How long the scent stays detectable | Everyone, over time | Is it still there this evening? |
Projection
Think of projection as the size of the scent bubble around you. A perfume with strong projection can be noticed across a table; one with modest projection only reveals itself when someone leans in. Projection is usually at its strongest in the first hour, when the lighter molecules evaporate fastest, and softens as the perfume settles.
Sillage
Sillage, pronounced roughly "see-yahzh", is the French word for the wake a boat leaves in the water. In perfume it means the trail you leave behind: the scent that hangs in a corridor after you have walked through it, or in a lift after you have stepped out. Sillage depends heavily on the heavier, longer-lasting materials in a fragrance, because those are the molecules that linger in the air.
Longevity
Longevity is simply how long a perfume stays detectable on skin. It is related to the other two but independent of them: a scent can last twelve hours as a quiet skin scent with little projection, or project loudly for two hours and then disappear.
How we describe sillage and projection
When we quote sillage, projection and longevity, the ratings come from the Mykonos brand handbook. Sillage and projection are rated on a simple scale of Moderate, Moderate to strong, and Strong; longevity is given as a minimum number of hours, such as 9+ or 12+. The ratings describe how a perfume is designed to behave with normal application. Your skin, the weather and the number of sprays will move them up or down.
Here is how they vary across a handful of perfumes:
| Perfume | Sillage | Projection | Rated longevity |
|---|---|---|---|
| Mykonos Aphrodite | Strong | Strong | 12+ hours |
| Mykonos Inception | Strong | Moderate to strong | 12+ hours |
| Mykonos California Blue | Moderate to strong | Strong | 10+ hours |
| Mykonos Slow Living | Moderate | Moderate to strong | 9+ hours |
| Mykonos Xoxo Rosy | Moderate | Moderate | 7+ hours |
What the examples show
Strong on both: a presence in the room
Aphrodite pairs burnt cinnamon, myrrh and jasmine with cedarwood, sandalwood, tobacco, vanilla and mineral amber. Dense, warm base materials like these both radiate and linger, which is why it is rated strong on both counts. It is an evening scent, and one or two sprays is plenty. Browse Woody & Vanilla for more in this warm, enveloping style.
More trail than bubble
Inception opens with bergamot, ginger, orange and lemon, then settles into guaiac wood, cedarwood, musk and Lorenox. It is rated strong for sillage but a step lower for projection: people notice it as you pass more than when they stand next to you. That is a useful profile for work, where a pleasant trail is welcome and a large bubble can be too much.
More bubble than trail
California Blue is the reverse. Lavender, pear, grapefruit and pink salt over marine notes, moss and a soft caramel base give it a bright radiance around you, rated strong for projection, with a slightly lighter trail. Fresh, airy compositions often behave this way.
Close and considerate
Slow Living and Xoxo Rosy sit at the gentler end. Slow Living is a clean scent of lemon, neroli and lavender over musk and cedarwood; Xoxo Rosy is a green, musky Turkish rose and one of our eaux de parfum. Both are easy to wear in shared spaces and both reward a closer encounter. The citrus collection is a good place to look for more fresh scents that suit the office.
What makes a perfume project and leave a trail
- The materials. Ambers, woods, musks and resins are heavier and slower to evaporate, so they build sillage. Bright citrus radiates early and fades. Modern woody-amber materials such as ambroxan and Iso E Super are widely used precisely because they carry so well.
- The concentration. More perfume oil usually means more longevity, but not always more projection. Alcohol is what throws scent into the air, so an extrait often sits a little closer in the first hour than a lighter concentration would. See extrait de parfum vs eau de parfum.
- Temperature and humidity. Warm air helps fragrance lift and travel, while cold air keeps it close. The same perfume can seem noticeably louder in August than in January.
- Where you spray. The throat and the back of the neck feed your trail; the chest under clothing keeps things closer. Our guide on where to apply perfume maps it out.
- How much you spray. Extra sprays mostly add projection in the first hours and do much less for longevity. See how many sprays of perfume.
Is more sillage always better?
No. Strong sillage is a pleasure at a dinner or a party and a nuisance in a meeting room or on a packed train. The right choice depends on where you are going. For shared spaces, look for moderate ratings and see our best perfumes for the office. For evenings, a stronger trail is part of the appeal, and our date-night perfumes guide has ideas. If you want a scent that people comment on, the trail matters, but so does character; we look at that balance in perfumes that get compliments. And if lasting power is your priority, start with our longest-lasting Mykonos perfumes.
How to judge your own perfume's sillage
You cannot, at least not on your own. Your nose adapts to your perfume within minutes, so you will always underestimate it; we explain why in why you stop smelling your own perfume. Ask someone to tell you honestly whether they notice it at arm's length, which is projection, and whether they can tell where you have just been, which is sillage. A room you left ten minutes ago is the most honest test of all.
Frequently asked questions
What is the difference between sillage and projection?
Projection is how far a perfume radiates from your body while you are still; sillage is the trail it leaves when you move. A scent can be strong in one and moderate in the other.
How do you pronounce sillage?
Roughly "see-yahzh". It comes from the French word for the wake behind a boat.
Does a longer-lasting perfume have stronger sillage?
Not necessarily. Longevity is how long a scent stays on skin; sillage is how much of it spreads into the air behind you. Some long-lasting perfumes stay close to the skin all day.
Which Mykonos perfumes have strong sillage?
Of the examples above, Aphrodite and Inception are both rated strong for sillage in the brand handbook. In general, a strong trail tends to come from warm, base-heavy extraits rather than from light, airy compositions.