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CINNAMOMUM JAPONICUM LEAF OIL.

Valuable / FRAGRANCE

A potent botanical extract derived from the leaves of the Japanese cinnamon tree, valued for its high concentration of aromatic aldehydes and phenols. It provides a multi-functional approach to skin health by balancing the microbiome and neutralizing oxidative stress through its unique phytochemical profile.

Antimicrobial Antioxidant Anti-inflammatory Fragrance Component

Science

This oil functions via multiple biological pathways: it disrupts microbial cell membranes and inhibits ATPase activity to prevent biofilm formation, while simultaneously suppressing the p38/JNK/AP-1 signaling pathway to reduce inflammatory mediators like TNF-α and IL-6. Furthermore, its high radical-scavenging capacity provides significant antioxidant protection against environmental aggressors.


Research

Medium confidence
Effective range 0.1–1.2%
Optimal

0.5%

Key findings

  1. 01 Demonstrated significant antibacterial activity against Staphylococcus aureus at concentrations of 1.6 mg/mL.
  2. 02 Ethyl acetate leaf extracts showed high radical-scavenging activity with an IC50 of 79.67 μg/mL for ABTS assays.
  3. 03 Effective inhibition of yeast-like and dermatotrophic fungi observed at MIC levels as low as 0.313 µg/µl.

Transparency

Commonly dusted
Min. effective
0.1%
Red flag below
0.05%

Due to its potent aroma and potential for irritation at high levels, many brands include this ingredient at negligible 'label-claim' concentrations. For therapeutic antimicrobial or antioxidant benefit, levels should ideally reach 0.1%, though safety limits for sensitive skin often force lower inclusions.


The Formula

Solubility
Oil
Optimal pH 4 – 5
0 7 14

Stability

Highly volatile and sensitive to light and oxidation. Stability is enhanced through encapsulation or the presence of antioxidants like eugenol.

Synergies

  • Eugenol
  • Tocopherol
  • Chitosan (for encapsulation)

Conflicts

  • Alkaline bases
  • High-heat processing

Safety

CIR Status
Unknown
Sensitization risk Moderate

Contains cinnamaldehyde and eugenol, which are known potential allergens and can cause contact dermatitis in sensitive individuals. Generally recognized as safe (GRAS) by the FDA for food use.


Your Skin

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

Our Assessment

Valuable

An excellent bioactive for oily and blemish-prone skin types, provided it is formulated with precision to avoid irritation.


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