Perfume is a generic term used for liquids with a distinctive pleasant smell.
A more scientific definition is that perfume is a liquid solution, which is a mixture of a liquid solvent and different solutes.
The liquid solvent for perfumes is generally ethanol (alcohol) or a mixture of water and ethanol.
Terms to Know
The solutes in perfumes are aromatic substances called scents that will dissolve in the solvent used.
Scents are also called notes. This is because , like musical notes, scent notes must be combined to create a melody, scent notes must be combined to create a special fragrance.
There are three types of notes, top notes, middle notes, and bottom notes.
top notes: Scents that evaporate first, which are light fragrances that are smelled first and last a few minutes.
middle notes: Scents that evaporate about 15 minutes after application and last about one hour.
bottom notes: Scents that evaporate last and their fragrance last the longest, usually several hours.
Notes are aromatic oils. The mixture of notes (scented oils) used in a perfume is called the “juice.” The differences between the scent of different perfume is due to the type of oils that make up of the “juice”