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Moumoujus

Ingredient directory

3,4-dihydro-6-methylnaphthalenone

A bicyclic aromatic ketone primarily employed as a fragrance component in cosmetic formulations. Beyond its olfactory function, research suggests modest bacteriostatic properties against common skin microorganisms at concentrations as low as 0.05%.

Directory entry · Individual source review pending

This profile is awaiting an individual source review. Treat its ratings, dose estimates and compatibility labels as provisional; they are not medical advice or proof of a finished product’s effects.

Perfuming Antimicrobial

Science

Mechanism of Action

Functions primarily through aromatic molecular diffusion to provide fragrance properties. Secondary antimicrobial activity occurs through disruption of bacterial cell membrane integrity, particularly effective against Staphylococcus aureus and Corynebacterium species.

Research

Clinical Evidence

Low confidence
Effective range ≥0.05%
Optimal

0.05%

Key findings

  1. 01 Demonstrated bacteriostatic activity against S. aureus and lipophilic diphtheroids in fragrance material screening

Transparency

Dusting Analysis

Not commonly dusted

As a specialty fragrance component with limited skincare applications, dusting is uncommon due to its specific aromatic profile and medium irritancy potential

The Formula

Formulation

Solubility
Oil
Optimal pH 4.5 – 7
0 7 14

Stability

Exhibits enhanced UV absorption under acidic conditions below pH 4.5, potentially increasing photosensitivity risk. Maintains stability in neutral to mildly acidic environments.

Conflicts

  • Strong oxidizing agents
  • Formulations below pH 4.5

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

Classified as harmful if ingested (H302) and serious eye irritant (H319) in concentrated form. EU CosIng approved for perfuming applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

A specialized fragrance ingredient with modest antimicrobial benefits but limited broader skincare applications due to moderate irritancy.

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