In short
A fragrance case study tells the story of one project through its decisions: the problem, what you tried, what the evidence showed, what you chose and what remains unverified. It should be short, truthful and checkable against your records. A reader should finish it knowing how you think. Keep your capstone's formula private if you wish, as the case study does not need it.
What you will learn
- Structure a case study around decisions
- Use evidence from your records, with its limits
- Write about failure in a way that adds credibility
Before this lesson: Portfolio Preparation
A structure
| Section | Contains | Approximate length |
|---|---|---|
| Summary | What it is, its status and its main finding | 60 words |
| The brief or question | What you set out to do, and the limits | 100 words |
| Research and concept | What shaped the idea | 120 words |
| Key decisions | Two or three turning points, with evidence | 350 words |
| Evaluation | Method, results and how far they go | 150 words |
| Cost and technical notes | What you checked, with dates | 100 words |
| What I'd do next | Unresolved flaws, next tests | 80 words |
| Status | Your status note, unchanged | 50 words |
Write about decisions
The difference between a diary and a case study is selection. Find the turning points in your log. For each one, explain the choice you faced, what you expected, what you tested, what you found and what you did about it.
Here is an invented sample paragraph:
By V4 the fragrance read as sweet, which the concept had ruled out. I suspected the benzoin. Removing it (V5) lowered the sweetness rated at 2 hours, but left the drydown thin at 8 hours, which I had not expected. I tried a small rise in the musk (V6), which restored length, but one of three assessors called the result "laundry". So I returned to V5 and raised a dry wood instead (V8), which two assessors preferred blind over V6. The small panel means this is only a weak indication, but it settled the direction.
The paragraph is specific, it includes a mistake, and it states the limit of its evidence.
Numbers and claims
- Say what you measured. "Detected on strips at 8 hours by three of four" is better than "excellent longevity".
- Give context. Report the size of your group, and how it was chosen.
- Use dates for technical claims. A restriction check holds for a given time.
- Quote assessors faithfully. Don't tidy their words to suit you.
- Don't imply validation. If a formula hasn't been assessed or stability tested, say so, including in the summary.
Check it against the record
Before you finish, go through the case study claim by claim, and find the entry in your log or results that supports each one. If you can't find it, remove or correct the sentence. Memory tends to tidy stories into a clean line of progress. Your log shows how it actually went.
Language and confidentiality
Write plainly. Avoid "journey", "passion" and "alchemy", and use your earned words for what happened on the strip. Remove client details unless permitted. Check that you aren't revealing a formula by accident through precise percentages or a screenshot. Have someone unfamiliar with perfumery read the summary, and someone familiar with it read the decisions.
Practical exercise: The capstone case study
- Reread your log, and mark two or three turning points.
- Write the case study, following the structure, in at most 1,200 words.
- Check every claim against your records, ticking each off.
- Paste in your status note unchanged.
- Ask one reader what they think you did, and one what they doubt. Revise.
You have done this well if each claim traces to your records, at least one thing that went wrong is included, and the status is clear from the summary onward.
Common mistakes
- Telling a clean story of constant progress. Real work backtracks.
- Using superlatives. Evidence works better.
- Omitting status. Readers may assume it is a finished, tested product.
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.