Definition
ISO E Super was developed by IFF (International Flavors & Fragrances) in the 1970s. It generates a woody, cedar, smoky, and slightly spicy impression that is difficult to perceive at low concentrations: many wearers experience it as a skin-amplifying presence rather than a distinct note. Geza Schoen's Molecule 01 (Escentric Molecules, 2006) consists of ISO E Super in a carrier, making it the purest commercial expression of the molecule.
This quality, sometimes described informally as skin-amplifying or presence-building by the community, is a sensory phenomenon: the molecule activates specific receptors at concentrations where it reads as ambient rather than applied.
In niche perfumery
ISO E Super appears as a supporting material in hundreds of niche and mainstream compositions, contributing seamless woody depth and diffusion. At high concentrations, as in Andy Tauer's L'Air du Désert Marocain, it reads as a dry desert-air accord. Related molecules from the same structural family include Iso Gamma Super (Givaudan) and Timberol (Givaudan), each offering different facets of the woody spectrum.