2. Perfume features

The main difference between a fragrance and any other active ingredient is the diversity of its composition. Whereas it is customary in pharmacology and cosmetics to encapsulate only single, chemically well-defined substances or chemically homogeneous mixtures, such as vegetable oils, perfumes contain a large number of ingredients that are very different from one another. This diversity is expressed through chemical functions (alcohols, esters, ethers, ketones, aldehydes...), structural characteristics (rings, branching, unsaturation, aromaticity...), physico-chemical properties (vapor pressure, polarity...) and sensory attributes (olfactory direction, impact, transparency...). What's more, a perfume is intended to please the consumer, and its hedonic dimension is its raison d'être: perfume is a subtle creation in every case, even if that perfume is ultimately used in a toilet block! Encapsulation...