In short
Perfumery is the craft of composing scents from aromatic materials: choosing them, balancing them and recording the result as a formula that can be made again. It combines a trained sense of smell, knowledge of materials and chemistry, and the patience to revise a composition many times.
What you will learn
- Define perfumery and tell it apart from wearing or collecting perfume
- Explain what a formula is and why it is written by weight
- Name the three kinds of knowledge the craft combines
Before this lesson: nothing. You can start here.
What a perfumer actually makes
A finished perfume is mostly a diluted mixture. What the perfumer creates is the concentrate inside it, and more exactly the formula for that concentrate: a list of materials, each with a quantity. A short formula might have ten lines. A complex one can have a hundred or more.
That written record is the real product of the work. It lets the same scent be made next month, in a larger batch, or by someone else. If you want to see what one looks like before you learn to read it fully, open a working example such as Mandarin Tiles in our formula library, then read how to read a perfume formula.
Three kinds of knowledge
People tend to describe perfumery as either art or chemistry. In practice it draws on three things at once:
| Kind of knowledge | What it means | Where you learn it here |
|---|---|---|
| The trained nose | Recognizing materials, describing them, noticing small changes | Level 2 |
| Materials and method | What materials are, how they behave, how to weigh and dilute them | Levels 3 to 5 |
| Composition | Deciding what to build and revising it until it works | Levels 4 and 6 |
You do not need a chemistry degree to begin. You will pick up chemistry as it becomes useful, and Level 7 goes further for those who want it.
Why formulas are written by weight
Perfumers normally weigh rather than measure by volume, because materials differ in density. One milliliter of a light citrus oil and one milliliter of a heavy resin are not the same amount of material. Weighing also makes small additions possible, and it makes a formula repeatable. Your first weighing practice comes in Level 3.
What perfumery is not
- It is not only mixing nice smells. Pleasant materials often combine into something muddy. Much of the skill is knowing why.
- It is not the same as appreciating perfume. Wearing and collecting are real pleasures and useful training, and the RUŌOD Journal's beginner guide is the place for them. Making is a different activity.
- It is not finished when it smells good today. A fragrance changes over hours on the skin and over weeks in the bottle, and a perfumer has to judge all of that.
How this course is arranged
Each level builds on the last. Stage A, which you are starting now, teaches you to smell and to handle materials safely. You will not compose a perfume in this level, and that is deliberate. People who start by mixing tend to produce things they cannot describe or repeat, and so they learn slowly. Start with your nose and your notebook, and the formulas will make far more sense when they come.
Practical exercise: Take one perfume apart in words
You need one perfume you own, a paper strip or clean card, and your notebook.
- Spray or dab the strip and label it with the name and the time.
- Smell it right away. Write three plain words for what you notice. Words like sharp, sweet or soapy are fine. You do not need perfumery vocabulary.
- Come back after 20 minutes and write three more words.
- Come back after a few hours, or the next morning, and write three more.
- Answer one question in a sentence: what changed the most?
Keep this page. It is the first entry in the journal you will set up properly at the end of this level.
You have done this well if your page is dated and honest about what you do and do not know yet, so that you can compare it at the end of the level.
Common mistakes
- Buying lots of materials first. You cannot yet tell what you would do with them. Wait for Level 3.
- Trying to name notes correctly. Nobody can check your perception except you. Honest plain words beat borrowed vocabulary.
- Judging from the first minute. The opening is only part of a fragrance, and often the least typical part.
Key terms
- Perfumery
- The craft of composing scents from aromatic materials, and the study of those materials and how they behave.
- Formula
- The written list of materials and quantities that defines a fragrance, normally by weight.
- Accord
- A blend of materials that reads as one new smell rather than as its separate parts.
Knowledge check
Written and reviewed by the RUŌOD Lab team. This is general education, not legal, regulatory, medical or safety advice. Example dilutions and exercises are for learning, are not validated products, and have not been safety-assessed. Completing a lesson confers no qualification. How we check these lessons.