Ingredient Guide · Woody Ambery
Woody Ambery Family · Perfumery Note

Iso E Super

The invisible molecule shaping contemporary scent architecture.

Iso E Super is a synthetic woody-amber note used as a backbone or enhancer in perfumery. Its defining quality is a smooth, transparent radiance, primarily due to the Arborone isomer, with typical usage levels from 5–30% in modern compositions.

Iso E Super
Ingredient Profile

Iso E Super

Woody Ambery Family
Family Woody Ambery
Note Position Heart Note
Usage Level 5–30% in formula
Key Origins United States, Switzerland, Japan
Iconic In Halston for Women, Fahrenheit
The Ingredient

What does Iso E Super smell like and why is it so significant in perfumery?

Iso E Super is a synthetic aroma chemical, formally known as 1-(2,3,8,8-tetramethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-2-yl)ethan-1-one (CAS 54464-57-2). Its scent profile is elusive: it is often described as dry, woody, and cedar-like with a subtle ambery undertone and a faintly musky, velvety texture. The molecule is nearly odorless to some, but for others, it radiates a soft, skin-like warmth. This effect is due to a minor isomer called Arborone, which constitutes only about 5% of the mixture but is responsible for most of the olfactory impact, with an odor threshold of approximately 0.005 ng/L — 100,000 times more potent than the dominant, nearly odorless isomer B. This unique structure gives Iso E Super its signature transparent, diffusive quality, making it a cornerstone of the 'modern woody' olfactory family. In perfumery, Iso E Super is classified as a heart or base note, depending on concentration and composition. It is typically used at 5–30% in fine fragrance formulas, but some minimalist or molecule-forward scents (such as Escentric Molecules Molecule 01) use it at concentrations up to 100% of the fragrance compound. Its volatility and molecular weight (234.38 g/mol) allow it to linger on skin for hours, subtly enhancing projection and radiance without overwhelming other notes. Iso E Super interacts with skin chemistry in a unique way: its perception can vary dramatically depending on the wearer’s skin pH and temperature, and about 20–25% of people are partially anosmic to it, experiencing little to no scent. Iso E Super in perfumery is exemplified by its use in landmark fragrances such as Dior Fahrenheit (1988, Jean-Louis Sieuzac & Maurice Roger), where it forms the backbone of the composition at around 25%, and Terre d’Hermès (2006, Jean-Claude Ellena), where it provides a minimalist, radiant woody-amber structure. Molecule 01 by Escentric Molecules (2006, Geza Schön) is a single-molecule showcase, demonstrating Iso E Super’s ability to create a “your skin but better” aura. These examples illustrate why the question “what does Iso E Super smell like” is central to understanding contemporary scent design.

3,000+ tons/year
Global annual production of Iso E Super exceeds 3,000 metric tons, reflecting its ubiquity in both fine fragrance and functional products.
5–30% in formula
Typical usage levels in fine fragrance range from 5% (as a background enhancer) to 30% or more in minimalist or molecule-forward scents.
8–12 hours
Iso E Super’s persistence on skin is 8–12 hours, due to its high molecular weight and low volatility, making it a key fixative and radiance booster.
Origin & Extraction

Where Iso E Super Comes From — Origin & Extraction

Iso E Super is produced globally by major aroma chemical manufacturers, with regional differences in isomeric ratios and purity affecting scent nuances. The molecule’s performance is consistent, but subtle variations in Arborone content can yield warmer or drier effects.

Iso E Super is a fully synthetic aroma chemical, first developed and patented by International Flavors & Fragrances (IFF) in 1973. Its chemical synthesis involves a multi-step process: initial condensation of acetaldehyde and methylethyl ketone, followed by a Diels-Alder reaction with myrcene, and finally acid-catalyzed cyclization. The result is a mixture of over 20 isomeric ketones, with isomer B (40–60%) and isomer G (Arborone, ~5%) being most significant for olfactory impact. The final product is a clear to pale yellow mobile liquid, soluble in alcohol but with very low water solubility (0.00268 g/L at 20°C). Iso E Super is produced on an industrial scale, with global output estimated at around 3,000 metric tons per year. Major manufacturers include IFF (under the Iso E Super® trademark), Symrise, Givaudan, and Takasago. The cost of Iso E Super is highly competitive compared to natural woody materials, typically ranging from $20–$60 per kilogram for technical grade, making it accessible for both fine fragrance and functional products. There is no natural counterpart; the molecule was structurally inspired by ionone-related compounds (the molecular architecture behind the scent of violets) but does not occur in nature. Sustainability considerations for Iso E Super are complex. As a synthetic, it avoids the overharvesting and ecological impact associated with natural woods and ambergris. However, environmental agencies such as the European Chemicals Agency (ECHA) have flagged OTNE (a related compound) for potential bioaccumulation and aquatic toxicity, prompting ongoing regulatory review. Manufacturers are increasingly optimizing synthesis for lower environmental impact and improved isomeric ratios (higher Arborone content for olfactory performance).

US

United States

IFF (International Flavors & Fragrances) in the US pioneered Iso E Super’s synthesis. US production emphasizes high Arborone content for maximum radiance. Annual output is estimated at over 1,000 metric tons, with strict quality control and batch consistency.

CH

Switzerland

Givaudan and Firmenich in Switzerland produce Iso E Super and next-generation analogs (e.g., Georgywood) with proprietary isomeric ratios. Swiss batches are known for their drier, more transparent profiles, favored in minimalist perfumery.

JP

Japan

Takasago in Japan manufactures Iso E Super with a focus on purity and environmental compliance. Japanese production is noted for slightly warmer, more ambery nuances, reflecting subtle process differences.

DE

Germany

Symrise in Germany is a major supplier, with output tailored for both fine fragrance and functional products. German Iso E Super is prized for its technical grade consistency and is widely used in European perfumery.

Chemistry

Natural vs Synthetic Iso E Super in Perfumery

Iso E Super is entirely synthetic and does not occur in nature. Its closest natural analogs are the woody-amber facets of cedarwood and ambergris, but no natural material replicates its unique transparency and radiance. The molecule is a mixture of isomers, with Arborone (CAS 63500-71-0), isomer B, and related compounds such as Georgywood (Givaudan, CAS 120938-69-0) and Iso Gamma Super (IFF) representing next-generation variants. These molecules differ in their isomeric ratios, volatility, and olfactory impact. Performance-wise, Iso E Super is prized for its longevity (often 8–12 hours on skin), smooth diffusion, and stability across formats. It is less prone to oxidation than natural woods, and its scent profile remains consistent across batches — unlike natural materials, which can vary due to terroir and harvest conditions. The cost differential is significant: Iso E Super is available at $20–$60/kg, while natural cedarwood oil can cost $80–$200/kg and ambergris tincture is exponentially more expensive and ethically problematic. Famous fragrances using natural woody notes (e.g., cedarwood, vetiver) often now rely on Iso E Super or its analogs for structure and radiance. Terre d’Hermès (Hermès, 2006, Jean-Claude Ellena) and Molecule 01 (Escentric Molecules, 2006, Geza Schön) are archetypal examples of synthetic dominance. The HumanSafe™ platform at CA Perfume ensures full ingredient transparency, batch traceability, and regulatory compliance for all synthetic aroma chemicals, including Iso E Super, with ongoing monitoring of IFRA and ECHA guidelines.

Natural
Iso E Super Absolute
Cost $3,000–6,000/kg
Method Solvent / CO₂
Character Complex, variable
vs
Synthetic
Safranal & Analogues
Cost $50–200/kg
Method Lab synthesis
Character Consistent, stable
Hall of Fame

Famous Fragrances That Define Iso E Super in Perfumery

1975
supporting note

Halston for Women

Halston
by Carlos Benaïm
aldehydesoakmosspatchouli
1988
dominant note

Fahrenheit

Christian Dior
by Jean-Louis Sieuzac & Maurice Roger
violet leafleathernutmeg
1990
bridge note

Trésor

Lancôme
by Sophia Grojsman
roseapricotgalaxolide
2006
structural backbone

Terre d’Hermès

Hermès
by Jean-Claude Ellena
orangevetiverflint
2006
single-molecule

Molecule 01

Escentric Molecules
by Geza Schön
2010
dominant note

Another 13

Le Labo
by Nathalie Lorson
ambroxanpearmusk
2006
dominant note

Encre Noire

Lalique
by Nathalie Lorson
vetivercypressmusk

Iso E Super’s influence is evident in a wide range of iconic fragrances, from avant-garde niche to mainstream designer. Its first major appearance was in Halston for Women (1975, Carlos Benaïm), where it provided a subtle woody backdrop. The true breakthrough came with Dior Fahrenheit (1988, Jean-Louis Sieuzac & Maurice Roger), which used an unprecedented 25% Iso E Super, creating a new template for woody masculines. In 1990, Sophia Grojsman’s Lancôme Trésor featured 18% Iso E Super, demonstrating its versatility in florals. Terre d’Hermès (2006, Jean-Claude Ellena) is a minimalist masterpiece, using Iso E Super as a structural backbone for its radiant, mineral-woody effect. Escentric Molecules Molecule 01 (2006, Geza Schön) is a single-molecule fragrance, showcasing Iso E Super’s ability to act as a “second skin” scent. Le Labo Another 13 (2010, Nathalie Lorson) and Lalique Encre Noire (2006, Nathalie Lorson) further cemented its reputation as the invisible architecture behind contemporary perfumery. CA Perfume’s collection draws inspiration from this lineage, offering molecule-forward and modern woody compositions that highlight Iso E Super’s versatility.

The Accord

How is a captivating Iso E Super accord crafted?

A modern Iso E Super accord typically blends Iso E Super (40–45%), Ambroxan (20–25%), Cashmeran (15–20%), and Cedarwood (15–20%). Iso E Super provides the transparent, diffusive woody-amber core. Ambroxan adds mineral, musky radiance and longevity. Cashmeran brings tactile warmth and a soft, musky-woody nuance. Cedarwood natural oil anchors the accord with a dry, resinous backbone, enhancing realism and complexity. This combination creates a seamless, radiant, and long-lasting woody-amber effect.

45%

Iso E Super

40–45% of blend

Provides the transparent, diffusive woody-amber core due to Arborone isomer’s high olfactory potency. Sets the accord’s radiance and smoothness.

25%

Ambroxan

20–25% of blend

Adds mineral, musky radiance and longevity. Ambroxan’s high molecular weight and low volatility extend the accord’s sillage.

20%

Cashmeran

15–20% of blend

Brings tactile warmth and a soft, musky-woody nuance. Its polycyclic structure complements Iso E Super’s transparency.

20%

Cedarwood

15–20% of blend

Anchors the accord with a dry, resinous backbone. Natural cedarwood oil supplies sesquiterpenes that enhance complexity and realism.

The Olfactory Layers

How Iso E Super Evolves on Skin

Iso E Super’s olfactory evolution is subtle and linear, with a slow evaporation curve. The molecule’s low volatility (high molecular weight) means it persists for hours, gradually diffusing from skin. Initial impressions are faint, becoming more pronounced as the fragrance warms and interacts with skin chemistry.

I
Top notes
0–15 min
Airy Wood Accord

Iso E Super’s top phase is nearly imperceptible, with a faint, airy woodiness. High-volatility isomers evaporate quickly, but most of the scent is carried by Arborone, which emerges slowly. The initial impression is often described as 'clean air' or 'soft skin', with minimal projection.

airytransparentsubtle
II
Heart notes
20–60 min
Velvet Radiance

The heart reveals Iso E Super’s signature dry, woody-amber character. Arborone and related isomers interact with skin heat, amplifying the velvet-like, cedar-amber effect. This phase is marked by a diffusive, radiant warmth that feels both abstract and intimate.

woodyvelvetyambery
III
Base notes
Several hours
Persistent Skin Musk

In the base, Iso E Super persists as a soft, musky-woody aura. The molecule’s low volatility ensures longevity, with a lingering, skin-like scent that blends seamlessly with natural body odor. Subtle patchouli and vetiver nuances may emerge, depending on the composition.

muskyskin-likepersistent
TOP NOTES Airy Wood Accord 0–15 minutes HEART NOTES Velvet Radiance 20–60 minutes BASE NOTES Persistent Skin Musk Several hours
Through the Ages

The Story of Iso E Super in Perfumery

Iso E Super’s history spans from laboratory innovation in the 1970s to its status as a pillar of modern perfumery, shaping the evolution of woody-amber fragrances.

1973

Synthesis and Patent by IFF

Chemists John B. Hall and James M. Sanders at International Flavors & Fragrances (IFF) synthesize and patent Iso E Super (originally Isocyclemone E), inspired by ionone-related structures. The molecule’s transparent woody-amber character is recognized as a breakthrough.

1975

First Use in Fine Fragrance

Halston for Women (Carlos Benaïm) becomes the first notable perfume to feature Iso E Super, using it as a subtle woody backdrop. This marks the molecule’s entry into high-end perfumery.

1988

Dior Fahrenheit: The Iso E Super Revolution

Jean-Louis Sieuzac and Maurice Roger use Iso E Super at 25% in Dior Fahrenheit, creating a new template for woody masculines and inspiring widespread adoption in the industry.

2006

Minimalist and Molecule-Forward Fragrances

Jean-Claude Ellena’s Terre d’Hermès and Geza Schön’s Molecule 01 (Escentric Molecules) showcase Iso E Super as a dominant or sole ingredient, highlighting its transparent, skin-like effect.

2010s–2020s

Mainstream and Niche Adoption

Iso E Super becomes ubiquitous in both designer and niche perfumery, with high concentrations in Le Labo Another 13, Lalique Encre Noire, and numerous contemporary releases. Global production exceeds 3,000 metric tons annually.

The Art of Layering

How to Layer Iso E Super

Understanding how to layer Iso E Super involves recognizing its molecular compatibility with other notes. The question of how to layer Iso E Super is central to modern perfumery, as its transparent, diffusive structure enhances projection, smooths harsh edges, and amplifies radiance in both woody and floral compositions.

01

Enhance Sweetness

Layering Iso E Super with vanilla or tonka bean leverages olfactory masking: Iso E Super’s woody-amber molecules amplify vanillin’s sweetness while smoothing sharp edges. This pairing is demonstrated in fragrances like Maison Francis Kurkdjian Baccarat Rouge 540, where Iso E Super and ethyl maltol create a radiant, gourmand-woody effect.

02

Add Depth

Combining Iso E Super with patchouli or vetiver introduces earthy, resinous molecules that interact with Iso E Super’s transparent structure. This synergy is evident in Lalique Encre Noire, where Iso E Super’s radiance supports vetiver’s rooty depth, creating a persistent, modern woody base.

03

Lighten the Glow

Pairing Iso E Super with citrus or green notes (e.g., bergamot, galbanum) utilizes shared volatile molecules, resulting in a fresher, more diffusive top. Terre d’Hermès exemplifies this, as Iso E Super’s backbone allows orange and mineral notes to shine with clarity and longevity.

Wear It Right

How to Wear Iso E Super Like a Pro

Seasonal Guide

Fall & Winter

In cooler weather, Iso E Super’s low volatility means it stays closer to the skin, creating an intimate, cozy aura. Application to pulse points under clothing helps maintain projection. Layer with richer notes (amber, leather) for added warmth.

Spring

Spring’s moderate temperatures allow Iso E Super’s radiance to shine, enhancing floral and green compositions. Increased skin moisture from humidity can amplify its diffusive, airy quality. Pair with fresh florals or citrus for a modern, transparent effect.

Summer

Heat increases Iso E Super’s volatility, boosting projection and sillage. Apply sparingly to avoid olfactory fatigue. Its clean, skin-like profile works well in minimalist summer scents, especially when layered with musks or aquatic notes.

Year-Round Tip

Iso E Super’s versatility makes it suitable year-round. Adjust application based on climate: more in cold, less in heat. Its ability to enhance other notes makes it ideal for layering, adapting to personal style and seasonal preferences.

Application Points

Strategic application maximizes Iso E Super’s radiance and longevity, leveraging skin heat and diffusion.

1

Neck

Pulse points on the neck generate heat, accelerating Iso E Super’s volatilization and enhancing projection. The molecule’s radiance creates a subtle scent cloud around the wearer.

2

Behind the Ears

This area maintains warmth and is less exposed to air, allowing Iso E Super to diffuse gradually and interact with natural skin oils for a persistent, intimate effect.

3

Inner Wrists

Frequent movement and warmth from the wrists help release Iso E Super’s scent, making it detectable during hand gestures and close interactions.

4

Hair

Spraying Iso E Super on hair provides a slow, sustained release as the molecule clings to hair fibers. Movement disperses the scent, creating a subtle, lingering trail.

Pro Tip

Layer Iso E Super as a base before applying other fragrances. Its molecular structure enhances projection and longevity of subsequent notes, acting as a 'velvetizer' for complex blends.

Mood Architecture™

Top Iso E Super Fragrances by Mood Score

These Iso E Super-based fragrances scored highest on the MEI™ Mood Architecture Framework — measuring how a scent may influence your emotional state.

Highest MEI Score
Herod — Parfums De Marly Herod Alternative Cologne
7.26
MEI™
Primary Romantic
Secondary Confident
Confidence
7.09
Presence
7.48
Mood Lift
7.31
Identity
7.33
Warmth
8.82
Social Ease
6.68
Energy
3.9
" I am beautiful.
View full mood profile →
Sunny Side Up — Juliette Has A Gun Sunny Side Up Alternative Perfume
7.13
MEI™
Primary Romantic
Secondary Confident
Confidence
6.65
Presence
7.17
Mood Lift
7.19
Identity
7.3
Warmth
9.0
Social Ease
6.89
Energy
3.5
" I am beautiful.
View full mood profile →
Chanova Blue — Chanel Bleu Alternative Cologne
7.12
MEI™
Primary Fresh
Secondary Confident
Confidence
6.9
Presence
7.46
Mood Lift
8.09
Identity
7.0
Warmth
7.15
Social Ease
6.34
Energy
5.4
" I am radiant.
View full mood profile →
Smoking Hot Fire — Smoking Hot Alternative Perfume
6.87
MEI™
Primary Romantic
Secondary Confident
Confidence
6.65
Presence
7.19
Mood Lift
7.01
Identity
6.63
Warmth
8.18
Social Ease
6.33
Energy
4.3
" I am beautiful.
View full mood profile →
HumanSafe™

Top Iso E Super Fragrances by HumanSafe™ Score

These Iso E Super-based fragrances have the highest product-level HumanSafe™ scores in this ingredient collection.

Highest HumanSafe™ Score
Sunny Side Up — Juliette Has A Gun Sunny Side Up Alternative Perfume
A-
HumanSafe™ Score Generally Safe
Safest Evaluated Ingredients EDP
AQUA Solvent / Carrier ISS 10.0
1,4-DIOXACYCLOHEPTADECANE-5,17-DIONE Evaluated ingredient ISS 10.0
BENZYL SALICYLATE Evaluated ingredient ISS 9.0
BENZYL SALICYLATE Evaluated ingredient ISS 9.0
4H-INDEN-4-ONE, 1,2,3,5,6,7-HEXAHYDRO-1,1,2,3,3- Evaluated ingredient ISS 9.0
ALCOHOL DENAT. Solvent / Carrier ISS 7.0
View full safety profile →
Smoking Hot Fire — Smoking Hot Alternative Perfume
A-
HumanSafe™ Score Generally Safe
Safest Evaluated Ingredients EDP
AQUA Solvent / Carrier ISS 10.0
1,4-DIOXACYCLOHEPTADECANE-5,17-DIONE Evaluated ingredient ISS 10.0
BENZENE, 1-METHOXY-4-(1-PROPENYL)-, (E)- Evaluated ingredient ISS 9.0
2H-1-BENZOPYRAN-2-ONE Evaluated ingredient ISS 8.0
LINALYL ACETATE Evaluated ingredient ISS 7.0
BENZOIC ACID, 2,4-DIHYDROXY-3,6-DIMETHYL-, METHYL Evaluated ingredient ISS 7.0
View full safety profile →
Rare Molecules Mandarine — Molecule 01 Mandarine Alternative Perfume
A-
HumanSafe™ Score Generally Safe
Safest Evaluated Ingredients EDP
AQUA Solvent / Carrier ISS 10.0
CITRAL Evaluated ingredient ISS 8.0
LINALOOL Evaluated ingredient ISS 7.0
BETA-PINENE Evaluated ingredient ISS 7.0
ALCOHOL DENAT. Solvent / Carrier ISS 7.0
2,6-DI-TERT-BUTYL-P-CRESOL Evaluated ingredient ISS 7.0
View full safety profile →
Rare Molecules 01 Patchouli — Molecule 01 Patchouli Alternative Perfume
A-
HumanSafe™ Score Generally Safe
Safest Evaluated Ingredients EDP
AQUA Solvent / Carrier ISS 10.0
ALCOHOL DENAT. Solvent / Carrier ISS 7.0
2,6-DI-TERT-BUTYL-P-CRESOL Evaluated ingredient ISS 7.0
1,6-METHANONAPHTHALEN-1(2H)-OL, OCTAHYDRO-4,8A,9,9- Evaluated ingredient ISS 7.0
ETHANONE, 1-(1,2,3,4,5,6,7,8-OCTAHYDRO-2,3,8,8- Evaluated ingredient ISS 6.6
CARYOPHYLLENE Evaluated ingredient ISS 4.0
View full safety profile →
Expert Voices

What Masters Say About Iso E Super

Iso E Super is the invisible architecture of modern perfumery — it gives structure, radiance, and a velvet-like sensation without ever announcing itself.
CA Perfume Editorial
Perfumers like Jean-Claude Ellena have relied on Iso E Super for its ability to create transparency and diffusion, making it a staple in minimalist compositions.
CA Perfume Editorial
Common Questions

Frequently Asked Questions

Answers to the most common questions about Iso E Super in perfumery.

Iso E Super in perfume smells dry, woody, and ambery with a subtle, skin-like warmth. Its scent is often described as transparent and velvety, with faint cedar and musky undertones. Some people perceive it as almost odorless, while others experience a diffusive, radiant aura. The molecule’s signature comes from the Arborone isomer, which has an exceptionally low odor threshold, creating a soft, persistent scent that melds with the wearer’s skin.

Iso E Super is primarily used as a heart or base note in fragrance compositions. Its low volatility and high molecular weight allow it to persist for hours, providing a long-lasting, radiance-boosting effect. In minimalist or molecule-forward fragrances, it can serve as the dominant note throughout all stages, but in most blends, it anchors the heart and base, supporting other woody, amber, or floral notes.

Iso E Super is favored in niche perfumery for its ability to create a modern, transparent woody-amber effect that feels both abstract and intimate. Its versatility allows perfumers to build minimalist structures or enhance complexity without overpowering other notes. Molecule-forward fragrances like Escentric Molecules Molecule 01 and Le Labo Another 13 showcase its unique, skin-like radiance, making it a signature of contemporary scent design.

Iso E Super fragrance uses include pairing with musks, ambroxan, patchouli, vetiver, cedarwood, and florals like rose or iris. Its molecular structure enhances projection and longevity of these notes, smoothing harsh edges and amplifying radiance. In Terre d’Hermès, it is paired with orange and vetiver; in Lalique Encre Noire, with vetiver and cypress.

Yes, Iso E Super is well-suited for summer and hot weather due to its clean, transparent profile and moderate projection. Heat increases its volatility, enhancing sillage and making the scent more noticeable. Its subtle, skin-like effect prevents it from becoming overwhelming, and it layers well with citrus or aquatic notes for a fresh summer signature.

Iso E Super fragrances typically last 8–12 hours on skin, thanks to the molecule’s high molecular weight and low volatility. Its persistence is further enhanced when used in higher concentrations or layered with other fixatives like ambroxan or musks. The scent may seem to fade to the wearer due to olfactory adaptation, but remains detectable to others.

Yes, Iso E Super is one of the best molecules for layering. It acts as a 'velvetizer,' smoothing and amplifying other notes. Apply Iso E Super as a base layer, then add your chosen fragrance after 3–5 minutes. This technique enhances projection and longevity, and works especially well with florals, gourmands, or woody scents.

For beginners, Escentric Molecules Molecule 01 offers a pure Iso E Super experience, while Terre d’Hermès (Hermès), Lalique Encre Noire, and Le Labo Another 13 provide accessible, modern woody-amber blends with Iso E Super as a key component. These fragrances showcase its versatility and signature radiance.

At CA Perfume, explore Iso E Super fragrances by considering your preferred style: minimalist (molecule-forward), woody-amber, or layered with florals or musks. Use the scent profile and layering guides to select a composition that matches your skin chemistry and seasonal preferences. The HumanSafe™ platform ensures ingredient transparency and safety.

Iso E Super is primarily woody and ambery, with only a faint, slightly sweet nuance. Its scent is more about texture and radiance than overt sweetness. When paired with vanilla, tonka, or musks, it can take on a softer, sweeter character, but its core identity remains dry, woody, and transparent.

Woody Ambery Collection

Explore Our Top Iso E Super Fragrances

Discover CA Perfume’s curated selection of Iso E Super fragrances, from minimalist molecule-forward scents to modern woody-amber blends.

Shop all iso e super fragrances at CA Perfume →

Where Iso E Super Comes From — Origin & Extraction

Iso E Super is a fully synthetic aroma chemical, first developed and patented by International Flavors & Fragrances (IFF) in 1973. Its chemical synthesis involves a multi-step process: initial condensation of acetaldehyde and methylethyl ketone, followed by a Diels-Alder reaction with myrcene, and finally acid-catalyzed cyclization. The result is a mixture of over 20 isomeric ketones, with isomer B (40–60%) and isomer G (Arborone, ~5%) being most significant for olfactory impact. The final product is a clear to pale yellow mobile liquid, soluble in alcohol but with very low water solubility (0.00268 g/L at 20°C). Iso E Super is produced on an industrial scale, with global output estimated at around 3,000 metric tons per year. Major manufacturers include IFF (under the Iso E Super® trademark), Symrise, Givaudan, and Takasago. The cost of Iso E Super is highly competitive compared to natural woody materials, typically ranging from $20–$60 per kilogram for technical grade, making it accessible for both fine fragrance and functional products. There is no natural counterpart; the molecule was structurally inspired by ionone-related compounds (the molecular architecture behind the scent of violets) but does not occur in nature. Sustainability considerations for Iso E Super are complex. As a synthetic, it avoids the overharvesting and ecological impact associated with natural woods and ambergris. However, environmental agencies such as the European Chemicals Agency (ECHA) have flagged OTNE (a related compound) for potential bioaccumulation and aquatic toxicity, prompting ongoing regulatory review. Manufacturers are increasingly optimizing synthesis for lower environmental impact and improved isomeric ratios (higher Arborone content for olfactory performance).

Famous Fragrances That Define Iso E Super in Perfumery

Iso E Super’s influence is evident in a wide range of iconic fragrances, from avant-garde niche to mainstream designer. Its first major appearance was in Halston for Women (1975, Carlos Benaïm), where it provided a subtle woody backdrop. The true breakthrough came with Dior Fahrenheit (1988, Jean-Louis Sieuzac & Maurice Roger), which used an unprecedented 25% Iso E Super, creating a new template for woody masculines. In 1990, Sophia Grojsman’s Lancôme Trésor featured 18% Iso E Super, demonstrating its versatility in florals. Terre d’Hermès (2006, Jean-Claude Ellena) is a minimalist masterpiece, using Iso E Super as a structural backbone for its radiant, mineral-woody effect. Escentric Molecules Molecule 01 (2006, Geza Schön) is a single-molecule fragrance, showcasing Iso E Super’s ability to act as a “second skin” scent. Le Labo Another 13 (2010, Nathalie Lorson) and Lalique Encre Noire (2006, Nathalie Lorson) further cemented its reputation as the invisible architecture behind contemporary perfumery. CA Perfume’s collection draws inspiration from this lineage, offering molecule-forward and modern woody compositions that highlight Iso E Super’s versatility.

Natural vs Synthetic Iso E Super in Perfumery

Iso E Super is entirely synthetic and does not occur in nature. Its closest natural analogs are the woody-amber facets of cedarwood and ambergris, but no natural material replicates its unique transparency and radiance. The molecule is a mixture of isomers, with Arborone (CAS 63500-71-0), isomer B, and related compounds such as Georgywood (Givaudan, CAS 120938-69-0) and Iso Gamma Super (IFF) representing next-generation variants. These molecules differ in their isomeric ratios, volatility, and olfactory impact. Performance-wise, Iso E Super is prized for its longevity (often 8–12 hours on skin), smooth diffusion, and stability across formats. It is less prone to oxidation than natural woods, and its scent profile remains consistent across batches — unlike natural materials, which can vary due to terroir and harvest conditions. The cost differential is significant: Iso E Super is available at $20–$60/kg, while natural cedarwood oil can cost $80–$200/kg and ambergris tincture is exponentially more expensive and ethically problematic. Famous fragrances using natural woody notes (e.g., cedarwood, vetiver) often now rely on Iso E Super or its analogs for structure and radiance. Terre d’Hermès (Hermès, 2006, Jean-Claude Ellena) and Molecule 01 (Escentric Molecules, 2006, Geza Schön) are archetypal examples of synthetic dominance. The HumanSafe™ platform at CA Perfume ensures full ingredient transparency, batch traceability, and regulatory compliance for all synthetic aroma chemicals, including Iso E Super, with ongoing monitoring of IFRA and ECHA guidelines.