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Moumoujus

2-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXENYL)-2-BUTENAL.

Optional CAS 68555-62-4 / PERFUMING

A sophisticated fragrance aldehyde that delivers distinctive woody and orris-like olfactory notes to skincare formulations. This oil-soluble compound functions primarily as a perfuming and masking agent, enhancing product sensory experience while potentially supporting fragrance longevity through its fixative properties.

Summary

perfuming masking

Science

Mechanism of Action

Functions exclusively as an olfactory modifier and masking agent rather than providing direct biochemical skin benefits. The aldehyde structure enables it to interact with olfactory receptors while acting as a fixative to extend fragrance performance in topical applications.

Research

Clinical Evidence

Medium confidence
Effective range 0.72–2%
Optimal

N/A

Key findings

  1. 01 EP2827953A2 patent demonstrated effective fragrance delivery at 0.72% without compromising skin barrier function
  2. 02 Industry specifications confirm harmonizing properties at trace to 2.0% concentrations for woody accord enhancement

Transparency

Dusting Analysis

Not commonly dusted

As a fragrance ingredient with no established skincare benefits, inclusion would be transparent and functional rather than deceptive dusting

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Demonstrates good stability in anhydrous systems like soaps and powders but shows reduced stability in emulsions and body lotions. Aldehyde functionality makes it susceptible to oxidation over time, potentially increasing formulation acidity.

Synergies

  • Woody fragrance compounds
  • Orris-based accords

Conflicts

  • Strong oxidizing agents
  • Bleach
  • Highly porous materials

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
2%
Sensitization risk Low

RIFM assessment confirms non-genotoxic, non-phototoxic, and non-photoallergenic profile. NESIL value of 1100 μg/cm² indicates low sensitization potential under normal use conditions.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A well-tolerated fragrance ingredient with no direct skincare benefits but valuable for enhancing product sensory experience.

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