02 Why this exists
The gap between a brief and a formula
A working perfumer rarely lacks ideas. They lack the hour to turn a brief into a starting formula that respects volatility, hits a concentration, and stays shippable.
Fragrance Engine is the tool for that hour. Describe a scent; the engine composes a real, balanced starting formula you can iterate on. The page in the notebook, before the bottle.
Deterministic at the core
The composition is explicit math, not a language model: concentration, descriptor weights, volatility filtering, and accord scaffolding. The materials are real. Run the same brief twice and you get the same formula.
The AI does three small, well-scoped jobs: it reads your intent, writes a scent story for a client deck, and suggests a name. It never invents the chemistry.
Pillar 01
Real materials
A curated catalog of naturals and aroma chemicals with descriptor profiles, real physical data, and per-supplier lot overrides for the working perfumer's bench.
Pillar 02
Honest math
Mass-weighted density for every lab sheet, physics-backed volatility model (Calkin & Jellinek's BP-MW framework), and percentages that add to 100, or an inline UNBALANCED flag when they don't.
Pillar 03
A page worth the desk
Editorial register. Instrument Serif headings. Numbers and material names get the dignity they deserve. This is not a SaaS dashboard.
From a sentence to a lab sheet
Describe a scent in plain words. The engine composes a real, balanced formula you can weigh on a scale, with the pyramid, the performance curve, and the math behind every gram.
Live today, not a roadmap
Brief to formula
Write a sentence and watch it resolve into a balanced top, heart, and base structure, real materials at exact percentages, all of it ready to edit.
Accords you build once
Compose a sub-blend, save it as an accord, then pull it into any future formula as a single ingredient, building a personal library of the chords you reach for most.
Lab sheets that weigh true
Mass-weighted density turns mL into grams correctly at any batch size, so the sheet you print is the sheet you weigh.
Evaporation from physics
Boiling point and molecular weight, not guesswork, shape how a fragrance projects and how long it lasts.
The catalog, your way
Read the 315-material library as a dense register, an olfactive scatter map, or editorial cards, whichever way you think.
Sourcing on the formula
Buy links sit right on each material on every plan. Studio adds a cost optimizer that swaps in something cheaper or easier to source while the accord still holds; Studio Pro keeps the supplier prices live and updating.
Publish to the Formulary
Browse a community library of accord editions and take any into your workspace. Publishing your own, a Studio Pro act, is a maker's calling card.
Who makes this
Fragrance Engine is designed, built, and run by one person, a chemical engineering student in New York. The physics-first approach is not a marketing angle; it is how an engineer thinks about evaporation. The code, the curated catalog, the copy, and the support inbox are the same pair of hands, so when you write in, you are talking to the person who can actually fix it.
A one-person product cuts both ways, so the honest version is in writing. The promises about your work, including what happens if this project ever winds down, live on your formulas are yours. The methods behind every number are documented on the methods page, and the public changelog shows the shipping cadence rather than asking you to take it on faith.
Questions or requests? [email protected]