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Moumoujus

OCTAHYDROCOUMARIN.

Optional CAS 4430-31-3 / PERFUMING

Octahydrocoumarin is a synthetic lactone derived from coumarin through complete hydrogenation, a process that removes aromaticity and mitigates phototoxic risks. Primarily serving as a fragrance component, it imparts creamy, sweet-lactonic, milky, and coconut-like scent profiles.

Summary

Perfuming Fragrance ingredient Fixative

Science

Mechanism of Action

This ingredient functions as a fragrance enhancer and fixative, enriching formulations with a smooth, long-lasting body. It is specifically utilized to soften and sweeten floral and fougère fragrance notes, improving the tenacity of scent blends. Octahydrocoumarin does not confer direct therapeutic benefits to the skin.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

No data available to suggest dusting concerns for Octahydrocoumarin.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Octahydrocoumarin exhibits high stability and photostability, maintaining its integrity across various fragrance types and functional bases. Optimal storage conditions involve sealed containers in cool, dry, dark, and well-ventilated environments, avoiding direct heat and sunlight. Temperatures should not exceed 40°C. When stored appropriately, a shelf life of 24-36 months can be expected. It demonstrates solubility in oils, alcohol, glycols, ethoxydiglycol, and DMSO, and is also slightly water-soluble, with reported solubility ranging from approximately 3.462 g/L to 39.953 g/L at 24-25°C.

Conflicts

  • Hypochlorite bleach

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
3%
Sensitization risk Low

The Research Institute for Fragrance Materials (RIFM) Expert Panel for Fragrance Safety concluded in November 2023 that Octahydrocoumarin does not pose a skin sensitization concern. This assessment is supported by human maximization tests, which showed no sensitization reactions at concentrations up to 5520 μg/cm2. It is also considered safe for inhalation exposure at current usage levels. Additionally, it holds Generally Recognized As Safe (GRAS) status by FEMA (No. 3791) and is approved by the FDA for use as a flavoring agent in food. While some older data sheets may reference it as a skin irritant, the recent and comprehensive RIFM evaluation indicates a low risk in cosmetic applications. The maximum recommended cosmetic concentration of 3% is based on usage in products like deodorant sticks.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Optional

Octahydrocoumarin is a safe and stable fragrance ingredient, providing pleasant scent notes without direct therapeutic skin benefits, making it an optional addition for sensory enhancement.

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