What is perfume? Notes, concentrations and how a scent is built
A perfume is a blend of aromatic materials dissolved in a carrier, usually alcohol or oil, composed so that it changes on the skin over hours. Understanding how it is built makes it far easier to choose one you will love for years.
The ingredients
Perfumers work with natural materials — flowers, woods, resins, spices, citrus peel — and with aroma molecules created in a laboratory. Neither is automatically better. Natural materials bring depth and texture; well-chosen molecules bring clarity, stability and notes that nature cannot give, such as clean musks.
These materials are blended into a concentrate, then diluted. The amount of concentrate in the final bottle decides how strong the perfume is and how long it lasts.
Top, heart and base notes
Light molecules evaporate first. These are the top notes — citrus, fresh spices, bright fruits — and they are what you smell in the first minutes.
The heart notes appear as the opening fades: florals, warm spices, softer fruits. They are the character of the perfume for the next few hours.
The base notes are the heaviest: woods, oud, amber, vanilla, musk and leather. They anchor the composition and are what remains on skin and clothing at the end of the day. Ouda, for example, opens with oud and white roses, moves into cardamom and sugar, and settles on leather.
Concentrations explained
Eau de cologne and eau de toilette contain the least concentrate and are light and short-lived. Eau de parfum is richer and lasts most of a day. Extrait de parfum is the most concentrated form — denser, closer to the skin and the longest-lasting.
Perfume oils skip the alcohol entirely. The concentrate is carried in oil, which evaporates slowly and wears intimately, the way scent has been worn in North Africa and the Middle East for centuries.
How to choose
Start with the base notes, because they are what you will live with. If you love warmth, look for oud, amber or vanilla; if you prefer clarity, look for musk and citrus. Then always test on skin, not on paper, and wait at least an hour before deciding.
