"Perfume" is the everyday word for any wearable fragrance; the French terms on labels — parfum, eau de parfum, eau de toilette, eau de cologne — are technical grades describing how much aromatic concentrate is dissolved in the alcohol base, from roughly 30% down to 3%. Higher concentration means longer wear and a quieter, deeper character; lower means brighter, lighter, shorter.
That single ladder explains almost every confusing word on a fragrance label. Here is each rung, what it means on skin, and where oil-based perfume — the format we work in — fits into the picture.
What does each term on a perfume label mean?
| Term | Aromatic concentration | Typical wear on skin | Character |
|---|---|---|---|
| Parfum / extrait de parfum | 20–40% | 8–12+ hours | Deep, dense, worn in drops |
| Eau de parfum (EDP) | 15–20% | 5–8 hours | The modern standard — full but wearable |
| Eau de toilette (EDT) | 5–15% | 2–4 hours | Bright, lighter, louder opening |
| Eau de cologne (EDC) | 2–5% | 1–2 hours | A splash of freshness, mostly citrus |
| Oil perfume | ~15–30% in oil, no alcohol | 6–8+ hours | Close to skin, slow unfolding |
The ranges overlap because there is no legal standard — every house draws its own lines. The ladder is a reliable map, not a law.
What does "eau de" actually mean?
Literally, "water of." Eau de parfum — perfume water; eau de toilette — from "faire sa toilette," the old ritual of grooming and dressing; eau de cologne — water of Cologne, the German city where the original citrus splash was made in the 1700s. None of these contain water as the main ingredient — the carrier is alcohol. The "eau" survives from centuries of habit, which is exactly why the labels confuse everyone.
Perfume vs parfum: same word, different meaning?
Same root, different jobs. "Perfume" in English is the umbrella — any wearable scent qualifies. "Parfum" on a label is a claim: this is the concentrated grade, the extrait, the strongest and most expensive form of the composition. So every parfum is a perfume, but very few perfumes are parfum — most bottles sold are eau de parfum or eau de toilette.
Why does oil perfume sit outside this ladder?
The entire ladder measures one thing: how much aromatic material is diluted in alcohol. Oil perfume changes the carrier itself — the botanical extracts are held in plant oil instead. Three consequences follow. There is no alcohol flash-off, so the scent doesn't shout for twenty minutes and then retreat; it unfolds gradually. Wear is long — comparable to parfum — but stays within arm's reach rather than filling a room. And the skin is spared the drying effect of alcohol, which is why oil formats suit sensitive skin.
This is the format Haus of Smell works in exclusively: 100% botanical extracts in oil, zero alcohol, composed and poured in Manhattan. If you want to see what the materials themselves smell like before the marketing language gets to them, the botanical note index describes every extract we use — and the 212 custom service lets you compose your own blend from them.
How do you choose the right concentration?
Match the format to the life it will live. For an office or any close-quarters day, eau de parfum or oil perfume — present, not loud. For hot weather, eau de toilette or cologne — heat amplifies everything, so lighter wins. For evenings and cold months, parfum or oil — depth reads best when the air is still and cool. And if your skin reacts to alcohol, the answer is simply oil, at any season.
FAQ
What does eau de parfum mean?
Eau de parfum (EDP) is French for "perfume water" — a fragrance with roughly 15–20% aromatic concentrate dissolved in alcohol. It is stronger and longer-lasting than eau de toilette but lighter than pure parfum, and it is the most common concentration sold today.
What is the difference between perfume and parfum?
In everyday English, "perfume" means any wearable fragrance. "Parfum" (or extrait de parfum) is a specific technical grade: the highest concentration, roughly 20–40% aromatic material, worn in small amounts and lasting longest on skin.
Which lasts longer, eau de parfum or eau de toilette?
Eau de parfum — typically 5–8 hours against 2–4 for eau de toilette — because it carries roughly twice the aromatic concentration. Eau de toilette trades longevity for a lighter, brighter first impression.
Where does oil perfume fit among these categories?
Outside the alcohol ladder entirely: the aromatic material is carried in a plant oil instead of alcohol. Concentration is typically comparable to parfum, wear is long and close to the skin, and nothing evaporates in a loud opening flash.
Does higher concentration mean better perfume?
No — concentration measures strength and longevity, not quality. A beautifully composed eau de toilette outclasses a crude parfum. Concentration tells you how a fragrance wears; the materials and composition decide whether it is worth wearing.