Science
Mechanism of Action
The extract's actions are attributed to its rich phytocompound profile. Tussilagone, a key sesquiterpenoid, mediates anti-inflammatory effects by inducing heme oxygenase-1 (HO-1) expression. Furthermore, a high concentration of phenolic acids, including 5-caffeoylquinic acid and dicaffeoylquinic acids, alongside flavonoids like hyperoside and myricetin, contribute to its antioxidant capacity by scavenging reactive oxygen species (ROS) and protecting against oxidative neuronal damage. These compounds collectively modulate cellular responses by suppressing inflammatory markers such as iNOS and COX-2 expression in stimulated cells.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Tussilago farfara naturally contains toxic pyrrolizidine alkaloids (PAs) known for their hepatotoxic, carcinogenic, and mutagenic potential. Given the lack of specific cosmetic safety assessments by regulatory bodies such as CIR or SCCS, and the absence of readily available toxicology data for cosmetic use, the ingredient is highly likely to be 'dusted' unless explicitly sourced as a certified PA-free variety, which is still in development. Unspecified extracts present a significant health risk.
The Formula
Formulation
Safety
Safety Profile
The primary safety concern for Tussilago Farfara Leaf Extract is its content of toxic pyrrolizidine alkaloids (PAs), which pose significant risks to liver health and have carcinogenic/mutagenic potential. Its use is strongly advised against during pregnancy and for individuals with pre-existing hepatic disease due to these hepatotoxic properties. There is a notable absence of Cosmetic Ingredient Review (CIR) assessment or specific maximum concentration recommendations for cosmetic use, leading to substantial safety data gaps. While a PA-free variety is reportedly under development, standard extracts are considered unsafe for cosmetic application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Despite exhibiting promising in vitro anti-inflammatory and antioxidant activities, the inherent toxicity of pyrrolizidine alkaloids (PAs) and the complete lack of cosmetic safety regulatory review render Tussilago Farfara Leaf Extract unsuitable and unsafe for precision skincare formulations.
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