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Moumoujus

5,9-DIMETHYL-8-DECEN-3-OL.

Optional CAS 19550-54-0 / PERFUMING

A secondary unsaturated alcohol that serves as a fragrance component with rosy-floral notes and malodor counteracting properties. This specialty ingredient works through scent masking and potential antimicrobial activity against odor-causing skin bacteria.

Summary

fragrance masking

Science

Mechanism of Action

Functions by masking unpleasant odors through olfactory receptor interaction while potentially inhibiting sweat-producing bacteria on the skin surface. Its secondary alcohol structure enables effective binding to olfactory receptors, creating a perception of cleanliness and hygiene.

Research

Clinical Evidence

Low confidence
Effective range 0.1–1%
Optimal

1%

Key findings

  1. 01 Studies on similar fragrance alcohols demonstrate 42% malodor reduction at low concentrations

Transparency

Dusting Analysis

Not commonly dusted

Limited clinical data on skin benefits makes dusting unlikely for this fragrance-specific ingredient

The Formula

Formulation

Solubility
Oil
Optimal pH 4 – 8
0 7 14

Stability

Demonstrates high stability in alcoholic and oil-based matrices but shows oxidation susceptibility when exposed to air and light due to alkene double bond. Water solubility extremely limited at 0.25 g/L.

Conflicts

  • Strong oxidizing agents
  • Strong acids

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
1%
Sensitization risk Low

ECHA and GHS classify as non-hazardous. IFRA guidelines recommend 1% maximum in leave-on products to prevent sensitization. REACH registered as fragrance substance.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A specialized fragrance ingredient with malodor counteracting properties but limited evidence for broader skincare benefits.

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