In short
To learn to recognize materials, practice recalling them rather than just smelling them: hide the label, name the smell, then check. Space your reviews out over days and weeks, and spend the most time on the pairs you confuse. Short, regular drills beat long sessions.
What you will learn
- Use recall rather than rereading to learn materials
- Schedule spaced review across days and weeks
- Identify and work on your confusion pairs
Before this lesson: Build Your Olfactory Vocabulary
What the evidence supports
Three separate things are worth keeping apart here.
- Training seems to matter. A brain imaging study found differences in olfactory-related regions in professional perfumers compared with students and untrained people, and some measures tracked years of experience. This is one cross-sectional study of a small number of people, so it cannot tell you how much your own practice will achieve, or how quickly.
- Recall and spacing are well supported for learning in general. Their evidence comes mainly from memory research on verbal material. We apply them to smell by analogy, and that step is our judgment rather than a tested result.
- Perfumers have long worked this way. Repeated, organized smelling is the standard method in the trade, and the reference guide on how to learn perfume materials sets it out.
The basic drill
- Prepare strips or vials with a code on the bottom, not the name.
- Smell one. Try to name it, and write your answer before you check.
- Check. If you were wrong, smell it again knowing what it is, and add one thought that will help next time.
- Move on, resting between materials.
- Note your score. Yes, you will be wrong a lot at the beginning. Failing to recall and then correcting yourself is part of how this works.
Space it out
Cramming feels productive but tends not to last. A simple schedule is enough. Treat these intervals as a starting point, not a rule:
| When | What to do |
|---|---|
| Day 1 | Study it with the name, and write your description |
| Day 2 | First recall drill |
| Day 4 | Recall drill. If you failed last time, go back to day 2. |
| Day 8 | Recall drill, mixed with other materials |
| Day 15, then monthly | Recall drill, mixed. Materials you know well can wait longer. |
Work on confusion pairs
Your mistakes are not random. Before long, you will find that you confuse certain materials: two citrus oils, say, or two white flowers. Write those pairs down, and give them their own session. Smell them one after another and write down what tells them apart. For example, lemon and bergamot may be close at first, until you notice bergamot's floral, tea-like edge.
Use associations, and keep them honest
Linking a material to a personal memory can help you retrieve it. The RUŌOD Journal article on scent and memory discusses that connection. Use associations such as my grandmother's soap as a private hook, and pair each with a descriptive word, because my grandmother's soap means nothing to anyone else.
Organizing what you study
Group materials by family while you learn them, then mix families once you know them. Many perfumers keep their materials in a fixed arrangement called an organ, partly because position helps memory. The guide to the perfume organ explains how. You will build a small version of your own in the last lesson of Level 3.
Practical exercise: Run your first recall drill
Use five smells you have already studied, such as essential oils, spices or fragrances. Decant or spot them so that the labels are hidden. A friend can code them, or you can shuffle numbered vials and keep a key.
- Smell each coded sample and write your guess.
- Check against the key. Record your score out of five, with the date.
- For every wrong answer, smell the right material again and add one note.
- Write down any confusion pair that shows up.
- Put your next three drills in your calendar: 2, 6 and 13 days from now.
You have done this well if the samples were coded by someone else or shuffled and covered, your score is recorded with its confusion pairs, and your next three drills have dates.
Common mistakes
- Studying with the label showing. Everything seems familiar when you can read the answer, and that familiarity misleads you.
- Adding materials too fast. A few you truly know are worth more than fifty you have merely met.
- Stopping when you first get them right. Mix known materials back in periodically, because recognition fades.
Key terms
- Recall practice
- Trying to name a smell before you check its label, rather than smelling with the name in front of you.
- Confusion pair
- Two materials you regularly mistake for each other, which are worth studying side by side.
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.