Quelques termes liées à la parfumerie :

Absolute
The absolute oil is obtained from “concretes” or resinoïds. After extraction of these from alcohol ethylic absolute, the alcoholic solutions are freeze between -12° and -15° Celsius, filtrate and after that concentrate under reduce steam. The absolute oil is very precious for the richness that occurs for the compositions in which they are incorporate.

Concrete
Solid or semi-solid product obtained after extraction of the nice-smelling principles of some natural raw materials such as Jasmine, Rose, etc., by some volatile solvent, ether of petroleum, Benzene.

Expression
Technique of extraction of certain essential oil mainly peels of citrus fruits, appealing to mechanical means such as pressure, centrifugation, etc. …

Oxidation
Perfume chemical reaction by contact with the oxygen atmosphere.

Stability
Property of a perfume a little bit sensitive to the different physical chemical changes.