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CINNAMOMUM ZEYLANICUM BARK POWDER.

Valuable CAS 84649-98-9 / SKIN CONDITIONING

A potent botanical derivative obtained from the inner bark of the True Cinnamon tree, utilized in precision skincare for its intense antimicrobial and microcirculatory benefits. It serves as a natural astringent and antioxidant that helps refine skin texture while defending against oxidative degradation.

antimicrobial antioxidant astringent skin conditioning anti-inflammatory

Science

This ingredient operates through multiple pathways: it inhibits the growth of acne-triggering bacteria and fungi while neutralizing free radicals to prevent premature aging. At a cellular level, it suppresses inflammatory cytokines and inhibits the enzymes collagenase and elastase, which are responsible for breaking down the skin's structural matrix. Additionally, it acts as a mild stimulant to promote blood microcirculation and assists in tissue remodeling.


Research

Medium confidence
Effective range 0.5–5%
Optimal

1%

Key findings

  1. 01 In-vitro models demonstrate that concentrations as low as 0.0012% v/v of its essential oil components significantly inhibit inflammatory cytokines and tissue remodeling biomarkers without cytotoxicity.
  2. 02 Research indicates that concentrations between 125-1000 µg/mL provide measurable antioxidant activity, with DPPH inhibition reaching up to 28.74%.
  3. 03 The extract forms have shown moderate inhibition of collagenase and elastase activities, supporting its use in anti-aging protocols.

Transparency

Commonly dusted
Min. effective
0.5%
Red flag below
0.1%

Due to its high irritancy potential and potent aroma, manufacturers often include this ingredient at 'label-only' concentrations (below 0.1%). While effective for marketing claims, these levels are typically insufficient to provide significant antimicrobial or anti-aging benefits.


The Formula

Solubility
Unknown
Optimal pH 4 – 6
0 7 14

Stability

The powder itself is insoluble, though its active extracts are partially water-soluble. It contains volatile compounds like cinnamaldehyde and eugenol which are sensitive to oxidation and heat; formulated pH typically rests around 5.0.

Synergies

  • Niacinamide
  • Salicylic Acid
  • Glycerin

Conflicts

  • High-strength retinoids
  • L-Ascorbic Acid (due to potential cumulative irritation)

Safety

CIR Status
Safe with restrictions
Max tested
0.1%
Pregnancy
Safe
Sensitization risk High

Safety is limited by the presence of cinnamaldehyde and eugenol, which are established contact allergens. IFRA recommends that Cinnamic aldehyde does not exceed 0.1% in finished cosmetic products to minimize sensitization risks. Patch testing is mandatory.


Your Skin

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

Our Assessment

Valuable

A powerful bioactive for oil control and antioxidant protection, though its high sensitization potential requires precise formulation and restricted concentrations.


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