A concrete is the first step to producing an absolute. The freshly harvested plant parts are submerged into a solvent, usually hexane. This results in a highly fragrant and usually solid mass due chiefly to the high waxes content. This material is then usually further processed in order to obtain an absolute which by definition is entirely alcohol soluble.

Concretes though can prove to be very valuable within perfumery, often showcasing further complexity in aroma profile than that of the corresponding absolute. They are also available at a lower cost than the corresponding absolute but are rarely available for sale. Due to their waxes content, concretes are ideal used within solid perfumes and will require filtration if used in alcohol based perfumes.

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