Luckily, in perfumery, there are no limits. Few substances are prohibited or restricted by RIFM or IFRA recommendations. Consequently, we shall attempt to demonstrate that though tbe perfumer himself may have his limitations (cost, time, work, talent and so on), the possibilities for combining and utilizing the raw materials themselves are limitless.
Thus, with a few examples, we shall study the evolution of certain aroma chemicals which were initially used in traces in a composition, and which now find themselves in overdose proportions in formulas, at concentrations which we would never have imagined possible.
Hedione is a product which was identified and achieved popularity in the sixties, being used at about 3% in Eau Sauvage (Dior-1966).