What’s so super about Iso E Super?
By Emmanuelle Moeglin, Founder & Perfumer · Classically trained at ISIPCA, 20 years in fragrance
Woody, velvety, ambery, faintly powdery. Iso E Super is one of the most loved materials in modern perfumery, and one of the strangest. It smells beautiful, yet it has a way of slipping just out of reach, a little like stepping into a sauna where everything feels soft and your sense of smell seems gently muted. Here is what it is, why perfumers reach for it constantly, and why you cannot always quite smell it.
What is Iso E Super?
Iso E Super is a synthetic aroma molecule, created by the fragrance house IFF and now one of the most widely used ingredients in the industry, found in everything from fine fragrance to fabric softener. It belongs to the woody-amber family, and on a perfumer's bench it is a quiet workhorse: smooth, versatile and almost universally flattering.
What does Iso E Super smell like?
Soft and woody, with facets of cedar, fresh pine, incense, powdery iris and a clean musk. It is rounded rather than sharp, which is exactly why it works so well: it adds a velvety smoothness and a warm, luxurious touch without ever shouting. Most people cannot place it against anything from daily life, yet they tend to love it instinctively. Blended with woods, spices and oriental notes it gives a fragrance a polished, expensive feel.
Most people cannot place it, yet they love it instinctively.
Why can't you always smell it?
This is Iso E Super's most famous quirk. A large proportion of people are partly anosmic to it, meaning they simply cannot detect it well, and even those who can find it fades in and out as the nose tires of it. That "now you smell it, now you don't" quality is part of its magic: it creates a soft, magnetic, skin-like impression that draws people in without being obvious. It is less a scent you notice and more one you feel.
It is less a scent you notice and more one you feel.
Why perfumers love it
It smooths and softens. A touch of Iso E Super rounds off rough edges, adds volume and lends that velvety woodiness that makes a composition feel complete. Unusually for a perfumery material, it can be used at very high concentrations, sometimes as nearly the whole formula, without becoming overpowering, which gives a perfumer enormous freedom.
The molecule that made synthetics famous
Many people first met Iso E Super through Escentric Molecules and its cult fragrance Molecule 01, created by perfumer Geza Schoen and built almost entirely around this single ingredient. It did real work: it helped to un-stigmatise synthetic molecules, which are too often wrongly thought of as "cheap" or "bad". In truth, molecules like this one are essential to the perfumer's palette, adding variety, radiance and effects that nature alone cannot give.
Drawn to soft, woody, ambery molecules? Read about ambroxan, its amber cousin, and musk. For the bigger picture, see iconic synthetic ingredients and how perfumery ingredients are made.
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Frequently asked questions about Iso E Super
▾ What is Iso E Super?
A synthetic woody-amber molecule made by IFF, and one of the most widely used materials in modern perfumery, prized for its smooth, velvety character.
▾ What does Iso E Super smell like?
Soft, woody and velvety, with cedar, incense, powdery iris and clean musk. It is smooth rather than sharp, which is why it makes fragrances feel polished and warm.
▾ Why can't I always smell Iso E Super?
Many people are partly anosmic to it, and the nose tires of it quickly, so it fades in and out. That elusive, skin-like quality is exactly what makes it so seductive.
▾ Is Iso E Super natural or synthetic?
Synthetic, and proudly so. It is a fine example of how molecules expand what perfumers can do, adding radiance and smoothness that natural materials cannot provide on their own.
▾ Which perfumes use Iso E Super?
Almost countless ones, across every price point. The most famous is Escentric Molecules' Molecule 01, which is built almost entirely around it.
▾ How much Iso E Super do perfumers use?
Unusually, it can be used at very high levels, even as nearly the whole formula, without becoming overpowering. That tolerance is part of why perfumers love it.
