A perfume is an aromatic composition whose natural ingredients, essences, synthetic and organic products, are combined with each other in order to provide the sense of smell with suggestive and pleasant sensations. Each of the components of the perfume has a specific olfactory function in the aromatic set, so that when we smell we feel very complex sensations; from the most ethereal, soft, fresh and natural notes to the deepest, enveloping, dense and penetrating ones. A perfume can best be described as a balanced and weighted succession of scents that constitute a harmonious whole.