Sillage vs Projection vs Longevity
Sillage is the trail, projection is the reach, and longevity is wear time. Compare the three, read performance reviews, and assess a perfume on your skin.
By Fragrance Fragrance EditorialPublished Updated
Sillage is the scent trail you leave as you move. Projection is how far from you the fragrance can be detected at a given moment. Longevity is how long it remains detectable after application.
These terms help you ask a more useful question than whether a perfume is “strong.” You might want a fragrance you can still enjoy after work without everyone at the next desk noticing it. That calls for lasting power with restrained projection.
| Term | Question it answers | Useful observation |
|---|---|---|
| Sillage | What trail do I leave as I move? | Someone notices the scent as or after you pass |
| Projection | How far away can it be smelled now? | Someone beside you notices it without leaning close |
| Longevity | How long does it remain detectable? | Scent is still detectable on skin later in the day |
Read the observation behind the score
A review that says “eight hours” is incomplete until you know what was measured. Was the reviewer checking skin or clothing? Was the fragrance still noticeable nearby, or only on a close sniff? The same bottle can receive different descriptions because people use different endpoints.
Community ratings are useful for spotting candidates to sample. A longevity score of 8/10 is an opinion on a scale, not eight hours of wear. A sillage score likewise cannot be converted into feet or meters.
Compare under similar conditions
Apply one fragrance and record the version, where you sprayed it and how much you used. After the opening settles, ask someone whether they notice it nearby. To assess a trail, ask what they notice when you walk past. Repeat later, and separately check whether scent remains on the skin.
Keep the setting reasonably similar when comparing fragrances. Air movement and different application amounts make a direct comparison harder. These are practical observations, not a controlled laboratory test.
What concentration leaves unanswered
EDT, EDP and extrait labels describe concentration categories. They do not assign an hour count or a projection distance. Versions bearing the same name can also differ in composition, so sample the version you plan to buy.
If you stop noticing your scent, it may have faded, your perception may have adapted, or both may be happening. Check before reapplying rather than treating either explanation as certain.