Reference

The material catalog

317 naturals and aroma chemicals, each with its own reference page: how it smells, how much to use, and the physics behind where it sits.

These are the building blocks the engine composes from, grouped by where they tend to sit in a fragrance: the bright, fleeting top; the heart that carries the theme; and the base that fixes it and lasts. A material's role shifts with the company it keeps, so treat the grouping as a starting point.