Science
Mechanism of Action
Functions as a broad-spectrum antimicrobial agent by cross-linking amino groups within bacterial cell walls and cytoplasm, effectively disrupting membrane integrity. It further interferes with bacterial communication by inhibiting quorum-sensing mechanisms and can exhibit tyrosinase inhibition, potentially impacting melanin synthesis pathways.
Research
Clinical Evidence
Medium confidence0.01%
Key findings
- 01 Demonstrated significant antibacterial activity through the destruction of bacterial cell membranes and inhibition of enzymatic activity.
- 02 Essential oils containing citral components effectively inhibited mushroom tyrosinase activity, suggesting potential brightening properties.
Transparency
Dusting Analysis
Often included at 'label-only' levels because European regulations require disclosure above 0.001% in leave-on products due to its status as a known allergen. Brands frequently use it at trace amounts purely for fragrance while claiming functional benefits.
The Formula
Formulation
Stability
Highly sensitive to pH; degradation occurs rapidly in acidic environments (pH 4) with a half-life of less than 10 days. Optimal stability is achieved near pH 7. It is also prone to oxidation when exposed to light and air.
Synergies
- Antioxidants
- Chelating agents
Conflicts
- Strong acids
- Alkalis
- Oxidizing agents
- Amino acids in high pH environments
Safety
Safety Profile
Recognized as a significant fragrance allergen. Must be declared on INCI lists in the EU if exceeding 0.001% in leave-on formulas. Safety assessments are largely derived from Citral (CAS 5392-40-5).
Your Skin
Skin Compatibility
Our Assessment
Verdict
While it offers antimicrobial benefits, its high sensitization potential and extreme pH instability make it a liability in precision skincare.
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