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Moumoujus

2-OCTENAL.

Optional CAS 2363-89-5 / PERFUMING

An unsaturated aldehyde compound that delivers a distinctive green, cucumber-like fragrance while providing secondary antimicrobial benefits. This oil-soluble ingredient offers dual functionality as both a sensory enhancer and active component with tyrosinase-inhibitory properties for potential skin-brightening effects.

Summary

perfuming antifungal masking

Science

Mechanism of Action

Functions primarily as a fragrance component while disrupting microbial cell membranes and inhibiting cellular energy production in pathogenic organisms. Additionally inhibits tyrosinase enzyme activity by binding to copper sites, potentially reducing melanin synthesis pathways.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–1%
Optimal

0.01%

Key findings

  1. 01 Significant antifungal efficacy against Trichophyton mentagrophytes and Microsporum canis

Transparency

Dusting Analysis

Not commonly dusted

Primarily used as fragrance component at very low concentrations, not subject to common dusting practices

The Formula

Formulation

Solubility
Oil
Optimal pH 5 – 7.5
0 7 14

Stability

Highly susceptible to air and light oxidation, converting to 2-octenoic acid. Requires antioxidant protection such as 0.5% alpha-tocopherol for stability maintenance.

Synergies

  • alpha-tocopherol

Conflicts

  • strong oxidizing agents
  • strong bases
  • primary amines

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.01%
Sensitization risk Moderate

IFRA restricts usage to 0.01% in leave-on products due to sensitization potential. Classified as uremic toxin but topical systemic absorption risk considered negligible.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A specialized fragrance ingredient with modest antimicrobial benefits, limited by sensitization concerns and strict concentration restrictions.

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References

Sources