Regularly, Dominique Davenne explores the four corners of the world to buy the most beautiful essential oils. In Australia, for example, he finds sandalwood, blue cypress, and fragonia, and in Crimea, clary sage and lavender. Without forgetting France, where the wood of cadier, the chamomile Roman, the melissa, or the lavandin grow: "Some oils are cultivated and harvested in France, like the cypress of Provence. But most often, you have to move. Sometimes, some large houses also come from hard to work materials to extract them under the most optimal conditions: for example gums, myrrh, incense. " With Henry Rosier, he founded near Avignon the Rosier-Davenne laboratory, which celebrated its twentieth anniversary on April 1st. On five hectares, the two accomplices cultivate immortelle, lemon balm and thyme in organic farming to extract essential oils. "Oils are defined by their process of obtaining, which is rare in the material objects most often defined by a function, or a form. An oil is obtained either by stripping with water vapor or by 'expression', that is to say in the case of citrus fruits by scraping. Once extracted, these oils will be mainly sold to the cosmetics industry, for face creams and soaps, and pharmacies, which make master preparations)..