The Concentration Ladder
| Label | Typical perfume-oil range | How it tends to wear |
|---|---|---|
| Parfum / extrait | About 20% to 30% or more | Closest to the skin, longest-lasting |
| Eau de parfum (EDP) | About 15% to 20% | Moderate projection, long wear |
| Eau de toilette (EDT) | About 5% to 15% | Brighter opening, more projection early, shorter wear |
| Eau de cologne (EDC) | About 2% to 5% | Light and brief |
These ranges are conventions. No regulator defines them, and houses vary: one brand's EDT can be stronger than another's EDP. Treat the label as a hint about style, not a measurement. The two-way version is covered in EDP vs. EDT.
Two Counterintuitive Facts
Higher concentration often means less projection, not more. Parfum contains less alcohol, and alcohol is what lifts a fragrance off the skin and into the air. So a parfum can wear closer and quieter while lasting longer. How far a scent carries is a separate property from how long it lasts — see sillage vs. projection and longevity.
The same name can be a different fragrance. Many houses rework a fragrance for each concentration, changing notes as well as strength. Dior Sauvage is a clear example: the eau de toilette, eau de parfum and parfum share a name and a direction but are distinct compositions, the stronger versions leaning warmer and more ambery. Sample the specific version before buying.
How to Choose a Concentration
| Situation | Usually the better choice | Why |
|---|---|---|
| Hot weather | Eau de toilette or cologne | Heat amplifies fragrance; lighter is more pleasant |
| Cold weather | Eau de parfum or parfum | Cold slows evaporation, so more concentration helps |
| Office or close quarters | Parfum or a quiet EDP | Wears closer to the skin |
| Evenings out | Eau de parfum | Lasts through the evening with some presence |
| Trying a new scent | Whichever version you actually like | Concentrations are often different fragrances |
The last row matters most. Because houses often reformulate at each strength, the right concentration is the one whose smell you prefer, not the strongest one you can afford. Try each version on skin before buying, or buy a sample or travel size first. Season-by-season picks are in best fragrances for winter and best fragrances for summer.
