Ozone Fleur (CAS ) — ozone top Note Fragrance Ingredient
Ozone Fleur
CAS
What Is Ozone Fleur?
Ozone Fleur is a modern synthetic fragrance ingredient designed to mimic the crisp, clean scent of fresh air after a thunderstorm. You’ll encounter it in laundry detergents, air fresheners, and contemporary perfumes aiming for a ‘just-showered’ freshness. This ingredient matters because it creates an instant impression of cleanliness without relying on traditional citrus or floral notes. It’s particularly popular in unisex fragrances and products targeting younger demographics who associate ozone with high-tech freshness rather than old-school perfumery.
Safety Profile
GENERALLY SAFEWhat Does Ozone Fleur Smell Like?
Ozone Fleur bursts with an electrifying metallic crispness—imagine licking a cold stainless steel spoon while standing in a mountain meadow at dawn. The initial shock of cold air evolves into a wet concrete minerality, like pavement after summer rain, then settles into a faintly floral aquatic whisper. Unlike traditional ozonic notes that can smell harsh or chemical, this variant has a rounded quality reminiscent of frozen lotus flowers. The dry-down leaves a ghostly trail of chilled linen and dewy glass surfaces that lingers surprisingly long for such a volatile top note.
Scent Profile
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Ozone Fleur provides the bracing ‘alpine breeze’ effect that makes this fragrance so instantly recognizable, cutting through the citrus with an exhilarating chill.
Used alongside mint and lavender to create the revolutionary ‘shower fresh’ accord that defined 90s masculines.
The ozone note here mimics water droplets evaporating from hot stones, forming the fragrance’s transparent backbone.
Ozone Fleur amplifies the ‘outdoors’ concept by recreating the scent of wind rushing through high-altitude evergreens.
Provides the synthetic cloud-like freshness that contrasts with the fruity sweetness in this contemporary celebrity scent.
Chemistry, Properties & Perfumer Guide
The Chemistry
Ozone Fleur belongs to the family of synthetic ozonides and oxyrane derivatives designed to replicate atmospheric freshness without using actual ozone (O₃), which is toxic at fragrance-relevant concentrations. Most commercial versions are proprietary blends of compounds like tricyclodecenyl acetate and floralozone (phenyl ethyl dimethyl carbinyl acetate), carefully balanced to avoid the harshness of early ozonic aromachemicals. The molecular structure typically features oxygen-rich functional groups that create high volatility while maintaining enough tenacity to persist through a fragrance’s top notes. Unlike natural ozone that decomposes quickly, these synthetics are stabilized through careful formulation with radical scavengers.
Physical & Chemical Properties
| Appearance | Colorless liquid |
|---|---|
| Volatility | Extremely high (evaporates within minutes) |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.5-3% | Up to 5% | Provides opening freshness |
| Laundry Care | 0.1-0.5% | Up to 1% | Clean linen effect |
| Air Fresheners | 1-5% | Up to 10% | Instant ‘outdoors’ impression |
| Shower Gels | 0.2-1% | Up to 2% | Bracing morning wake-up |
Classic Accords
Tip: Balance with trace amounts of ambroxan to prevent the ozone note from disappearing too quickly.
Alternatives & Comparisons
More floral variant with better persistence, useful when you need the ozone effect to last into heart notes.
Sharper metallic edge, preferred for masculine fragrances or when recreating cold winter air effects.
Softer approach with citrusy lift, better for mass-market applications where harshness must be avoided.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. IFRA, REACH, EU Cosmetics Regulation standards update periodically. Consult current IFRA Standards Library before formulating. Not legal or regulatory advice.
IFRA Status
Not currently restricted by IFRA. Classified as a specialty synthetic with no known sensitization issues at typical use levels.
RIFM Assessment
RIFM considers ozonic fragrance ingredients safe for use based on current exposure patterns and toxicological data.
Sustainability
As a purely synthetic material, Ozone Fleur has minimal environmental impact in production compared to natural ingredients requiring agricultural land. Most manufacturers now use green chemistry principles to minimize solvent waste during synthesis. However, the high volatility means more of the material enters the atmosphere during product use, though it breaks down rapidly without leaving persistent residues. Some brands are developing bio-based routes to similar molecules using fermented precursors.
Explore Ozone Fleur
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References
- Arctander, S. (1969). Perfume and Flavor Chemicals. Montclair, NJ.
- IFRA Standards Library (2023). Ozone-type materials monograph. IFRA
- Sell, C. (2019). Chemistry and the Sense of Smell. Wiley.
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Mar 2026.
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