Science
Mechanism of Action
This extract functions as a robust antioxidant, actively neutralizing free radicals to protect skin from oxidative stress and combat premature aging. It exhibits antimicrobial and antibacterial properties, which can aid in addressing fungal conditions and acne. Furthermore, it provides anti-inflammatory effects, soothing skin irritation. The extract is observed to promote skin microcirculation, regulate sebum secretion for a pore-cleansing effect, and may assist in managing hyperpigmentation over time. It strengthens the skin barrier through circadian clock modulation and fosters keratinocyte differentiation, alongside inhibiting elastase and hyaluronidase activities to preserve skin firmness and hydration.
Research
Clinical Evidence
Medium confidence0.001-5%
Key findings
- 01 Demonstrated inhibition of elastase and hyaluronidase activity, leading to improvements in skin elasticity and moisturizing effect. Optimal activity was observed preferably within 0.001-5%.
- 02 Methanolic extract effectively inhibited elastase activity.
- 03 Hot water and ethanol extracts exhibited an inhibitive effect on NO generation and β-hexosaminidase discharge, indicating anti-inflammatory properties.
- 04 Showed significant DPPH (84.93-90.25%) and ABTS (82.20-92.21%) radical scavenging effects, with an anti-inflammatory activity of 44.35%.
Transparency
Dusting Analysis
Reported effective concentrations for Cinnamomum Cassia Extract span a range from 0.0001% to 10%, with optimal activity noted in the 0.001-5% range, suggesting its use at impactful levels rather than for 'dusting' purposes.
The Formula
Formulation
Stability
Formulations containing Cinnamomum Cassia Extract maintain good physical stability, including minimal phase separation, liquefaction, and color changes, when formulated within a pH range of 5.9-6.36. Product stability is temperature-sensitive, with significant pH shifts observed in creams above 25°C, while remaining stable below this temperature. The raw extract itself has an approximate pH of 4.6.
Conflicts
- High concentrations are associated with an elevated risk of skin sensitivities, rashes, irritation, redness, and itching.
- Contains volatile fragrance compounds, specifically eugenol and cinnamaldehyde, which are recognized allergens and can provoke allergic reactions, particularly in individuals with sensitive skin.
- Possesses a potential to induce contact dermatitis.
Safety
Safety Profile
The CIR Expert Panel classified Cinnamomum Cassia Extract as having 'Insufficient Data or Information' for cosmetic safety, and the SCCS has not evaluated it. While FDA-approved for certain food uses, this classification does not extend to cosmetic applications. Topical use within recommended concentrations is generally considered acceptable, but higher levels significantly escalate the potential for skin sensitivities, rashes, irritation, redness, or itching, especially for sensitive skin types. Patch testing is highly recommended prior to use. Due to the presence of known volatile fragrance allergens like eugenol and cinnamaldehyde, regulatory bodies advise stringent monitoring of its concentration in cosmetic products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite its promising antioxidant, anti-inflammatory, and skin-elasticity benefits demonstrated in controlled studies, the high irritancy rating and presence of known allergens make Cinnamomum Cassia Extract a questionable ingredient for precision skincare, particularly for sensitive individuals.
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