The art of perfumery is not just about mixing a few scents selected by the master perfumer. The achievement of a perfume requires months of combinations and tests carried out by the perfumers' assistants like Mélissa Giraud (photo) for Louis Vuitton perfumes in Grasse. They also manage the library of raw materials, ensure that the dosages are respected, carry out analyzes, control the stability of the products, and keep a library of the compositions created.