Irish moss extract (CAS 9000-07-01) — Green Base Note Fragrance Ingredient
Irish moss extract
CAS 9000-07-01
What Is Irish moss extract?
Irish moss extract is a natural ingredient derived from red seaweed found along the Atlantic coasts. It’s commonly used in skincare, haircare, and some niche perfumes for its soothing and texturizing properties. This marine-derived extract matters because it adds unique moisture-retention qualities and a subtle oceanic character to formulations, prized in clean beauty and artisanal fragrance circles.
Safety Profile
GENERALLY SAFEWhat Does Irish moss extract Smell Like?
Irish moss extract carries a faint marine breeze – like damp seaweed drying on sun-warmed rocks with mineral undertones. It lacks sharpness, instead offering a soft saline whisper that melds seamlessly with aquatic and fresh notes. The aroma develops subtly, revealing hints of ozone and a clean, almost cucumber-like freshness upon dry-down. While not overpowering, it provides an authentic oceanic foundation that enhances marine accords without fishy off-notes.
In Famous Fragrances
Fragrance associations may not reflect actual formulations.
Used for its crisp marine character, Irish moss extract here creates an authentic oceanic backdrop that enhances the fragrance’s ‘breath of fresh air’ concept without overwhelming citrus top notes.
The extract provides subtle salinity and texture, mimicking the mineral quality of seawater evaporating from sunbaked coastal rocks in this minimalist marine composition.
Chemistry, Properties & Perfumer Guide
The Chemistry
Irish moss extract is primarily composed of carrageenan polysaccharides (kappa, iota, and lambda types) along with trace minerals, proteins, and amino acids. These sulfated galactans create its characteristic viscosity and moisture-binding properties. The marine aroma comes from dimethyl sulfide and other volatile sulfur compounds present in minute quantities. Unlike synthetic marine notes, its scent profile results from the complex interaction of these natural components rather than isolated aroma chemicals.
Physical & Chemical Properties
| Appearance | Viscous amber liquid |
|---|---|
| Solubility | Water-soluble, forms colloids |
Perfumer Guide
| Application | Typical % | Range | Notes |
|---|---|---|---|
| Fine Fragrance | 0.1-0.5% | Up to 1% | Used as marine accord modifier |
| Skincare | 1-3% | Up to 5% | Soothing and texturizing agent |
Classic Accords
Tip: Pre-dilute in water or hydrosol before adding to oil-based phases to prevent clumping.
Alternatives & Comparisons
When a more intense marine character is needed, though it carries stronger iodine nuances that may require balancing.
Safety, Regulatory & Sustainability
⚠ Regulatory Disclaimer
General reference only. Consult current IFRA Standards Library before formulating.
IFRA Status
No restrictions – classified as natural extract without sensitization concerns (IFRA 49th Amendment).
RIFM Assessment
RIFM considers Irish moss extract safe as used in cosmetic applications with no significant dermal absorption.
Sustainability
Irish moss is sustainably hand-harvested in Ireland and Canada following traditional methods that allow regrowth. The extraction process uses water-based methods without harsh solvents. As a renewable marine resource, it has lower environmental impact than synthetic marine notes, though climate change may affect future wild stocks, prompting research into aquaculture solutions.
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References
- Pereira L. (2018). Biological and therapeutic properties of the seaweed polysaccharides. International Journal of Biological Macromolecules. PMID 29698751
Data: PubChem (NIH), PubMed, RIFM, IFRA. Last reviewed: Apr 2026.
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