Science
Mechanism of Action
This extract exerts its effects through several key pathways. It significantly reduces inflammation by inhibiting the release of pro-inflammatory mediators such as nitric oxide (NO) and prostaglandin E2 (PGE2), and by decreasing the mRNA expression of inflammatory cytokines like interleukin (IL)-6 in macrophages. As an antioxidant, it effectively neutralizes peroxyl radicals. Furthermore, it supports skin regeneration by inducing keratinocyte migration, modulating key signaling pathways (β-catenin, ERK, Akt), and enhancing the mRNA expression of Type I and Type III collagen in fibroblasts, crucial for structural integrity. It has also shown a capacity to suppress adipocyte differentiation via the ERK pathway, reducing intracellular lipid accumulation.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Demonstrated strong antioxidant activity against peroxyl radicals at a concentration of 0.00009% (0.90 ± 0.07 µg/mL).
- 02 Showed dose-dependent inhibition of pro-inflammatory cytokine (IL-6) production in LPS-stimulated macrophages, with significant reduction (approx. 91.5%) within the concentration range of 0.00125% to 0.02% (12.5 - 200 µg/mL).
- 03 Induced keratinocyte migration and increased mRNA expression of Type I and III collagen in fibroblasts, alongside inhibiting nitric oxide (NO) and prostaglandin E2 (PGE2) release in macrophages. While specific effective concentrations for these benefits were not detailed, a related plant extract showed no toxic effects on skin cells at 0.02%.
- 04 Exhibited dose-dependent suppression of intracellular lipid accumulation in adipocyte precursors, reducing the expression of adipogenic transcription factors.
Transparency
Dusting Analysis
Given its documented efficacy at extremely low concentrations, as precise as 0.00009% for antioxidant activity, Stellera Chamaejasme Extract is susceptible to 'dusting.' This means minute, potentially sub-clinical, quantities may be included in formulations primarily for marketing claims rather than to deliver demonstrable benefits. Precision formulation necessitates inclusion at or above the established effective dose range.
The Formula
Formulation
Stability
Extracts can be successfully obtained using a variety of solvents, including ethanol, methanol, water, and dichloromethane, indicating broad solubility across different polarities. However, it is noted that some components within specific dichloromethane extracts (DCM-AP) exhibit lower solubility, which may necessitate careful consideration of stock solution concentrations during formulation.
Safety
Safety Profile
Stellera chamaejasme is widely recognized as a dominant poisonous plant species when ingested, capable of causing severe adverse effects including organ damage and mortality in humans and livestock. While it has a history of use in traditional medicine for treating inflammation, and exhibits promising *in vitro* efficacy, specific comprehensive topical safety assessments by regulatory bodies such as CIR, SCCS, or FDA are currently absent in the provided data. Although *in vitro* cell safety at 0.02% has been observed with *related plant extracts* (Buddleja davidii), direct topical dermal safety for Stellera Chamaejasme Flower/Leaf/Stem Extract itself at specific concentrations has not been established in these results. Caution and further dedicated topical safety studies are advised for cosmetic application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While exhibiting promising in vitro antioxidant, anti-inflammatory, and regenerative properties across low concentrations, the significant concern regarding its known toxicity upon ingestion and the current absence of comprehensive topical cosmetic safety assessments (CIR, SCCS, FDA) categorize this ingredient as having insufficient data for precision formulation without further rigorous topical safety validation.
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References
Sources