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1. Receptor Cell:Located in the olfactory epithelium, each cell has microscopic hairs (cilia) extending into the mucus. Odoriferous substances are thought to bind chemically to specific sites on these cilia. This chemical event is translated into an electrical message that is transmitted along the olfactory nerves to the olfactory bulb.
Submitted on Sunday, August 24, 2008 5:12:24 PM

2. Resinoids
Are extracts of gums, balsams, resins or roots (orris) which consist in whole or in part of resinous materials. They are generally used as fixatives in perfume compositions.
Submitted on Friday, October 26, 2007 5:12:24 PM

3. Retronasal Olfaction-Stimulation of the olfactory receptor cells by chemicals that originate in our mouth (most often during eating) and travel to the olfactory epithelium via the nasopharynx during exhalation.
Submitted on Friday, May 23, 2008 5:12:24 PM

4. Rhizomes
Root-like stems with nodes which grow under or along the ground. Certain perfume raw materials come from rhizome, e.g., Orris absolute and ginger oil.
Submitted on Wednesday, August 20, 2008 5:12:24 PM

5. Rounding Out-Perfume ingredients, often from natural origin, added to fragrance compositions to enrich, modify or soften any harsh qualities.
Submitted on Thursday, April 10, 2008 5:12:24 PM

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