Science
Mechanism of Action
This extract functions as a skin brightening agent by inhibiting melanin synthesis through several distinct pathways. It precisely decreases the expression of key melanogenesis enzymes: tyrosinase, tyrosinase-related protein 1 (TRP-1), and tyrosinase-related protein 2 (TRP-2). Furthermore, it regulates tyrosinase activity by suppressing microphthalmia-associated transcription factor (MITF) expression and activating extracellular signal-regulated kinase (ERK) phosphorylation. Beyond pigment regulation, Ligularia fischeri Leaf Extract exerts potent anti-inflammatory effects by suppressing proinflammatory mediators such as TNF-alpha, IL-6, and MMP-3, and inhibiting IL-1beta-induced JNK and p38 activation. Its robust antioxidant capacity is evident in its ability to reduce reactive oxygen species (ROS) levels and upregulate endogenous antioxidant enzymes like catalase and heme oxygenase-1, attributed to its rich content of caffeoylquinic acid derivatives.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 In B16F10 melanoma cells, a Ligularia fischeri ethanol extract demonstrated a 38% inhibition of melanin biosynthesis at a concentration of 100 μg/ml, exhibiting dose-dependent efficacy and non-cytotoxicity in this in vitro study.
Transparency
Dusting Analysis
Ligularia fischeri Leaf Extract is a botanical active ingredient with documented mechanisms for skin brightening, anti-inflammatory, and antioxidant effects, indicating it is a valuable component rather than a mere filler in formulations.
The Formula
Formulation
Stability
The extract contains both water-soluble phenolic compounds and hydrophobic components, suggesting it can be extracted into and stabilized in both aqueous and non-polar systems. Its intrinsic stability is enhanced by antioxidant compounds like caffeoylquinic acid derivatives, though standard protective measures against oxidation and microbial growth are advisable in final formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has not yet assessed Ligularia fischeri Leaf Extract and it is not currently prioritized for review. In vitro studies have consistently shown non-cytotoxicity, with an ethanol extract non-cytotoxic to B16F10 melanoma cells below 100 μg/ml, and a leaf extract not affecting RAW 264.7 cell viability up to 200 µg/mL.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Ligularia fischeri Leaf Extract is a valuable multi-functional ingredient offering significant skin brightening, anti-inflammatory, and antioxidant benefits, supported by a well-defined mechanism and good in vitro safety profile.
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References
Sources