Etymology and Concept
The word sillage (pronounced see-YAZH) entered English fragrance writing as a direct borrowing from French, where it literally denotes the wake or slipstream left by a boat. Applied to perfume, it describes the aromatic impression that lingers in the space a person has just passed through. A strong sillage means bystanders can detect the fragrance even after the wearer has left a room; a discreet sillage stays close to the skin.
Sillage is distinct from projection, which measures how far a fragrance radiates outward from the skin while the wearer is stationary. A perfume can have strong projection but brief sillage, or moderate projection with a persistent trail. Both depend on the volatility profile of the formula and the concentration of ingredients.
Factors That Affect Sillage
Several variables determine sillage intensity. High concentrations of tenacious base notes (musks, ambers, resins) sustain a trail over time. Molecular weight plays a role: heavier molecules linger in the air longer. Application method and quantity affect how much material is deposited on fabric and hair, both of which hold scent longer than skin.
Community vocabulary around sillage includes informal descriptors: "beast mode" describes a composition with extreme, room-filling trail; "skin scent" describes the opposite, where the fragrance barely extends beyond the wearer's skin. Rating systems on platforms such as Fragrantica include a sillage scale from intimate to enormous.
See Also
Related entries: Projection, Longevity, Skin Scent, Olfactory Pyramid.
Sources
- Fragrantica. Sillage rating methodology. fragrantica.com.
- Turin, L. & Sanchez, T. Perfumes: The Guide. Profile Books, 2008.
- Sell, C. The Chemistry of Fragrances. RSC Publishing, 2006.