The Guerlain fragrance "Iris Ganache" is a part of the L'Art et la Matière collection. It is known for its powdery and soft floral scent, enriched with notes of almond and musk. The fragrance is described as having a characteristically powdery facet of iris, and it is overdosed with precious iris butter, giving it an intense and enveloping softness in an ultimate concentration of 30%
. The main ingredients of iris are irone, a very expensive constituent that represents the quality of the iris, and myristic acid. The iris butter can be calibrated in terms of its irone content, and it is one of the most expensive raw materials in perfumery
