Science
Mechanism of Action
This extract, primarily through its active compound silymarin, functions as a powerful antioxidant, mitigating oxidative stress and replenishing vital glutathione levels within the skin. It exerts anti-inflammatory action by inhibiting key pro-inflammatory cytokines such as IL-8, TNF-α, and IL-1a, while also modulating immune responses by increasing anti-inflammatory cytokines like IL-12 and IL-10. Silybum Marianum Fruit Extract also aids in regulating sebum production, reducing post-inflammatory hyperpigmentation, and modulating the 'comedone-switch mechanism' by shielding sebocytes from comedogens. It further contributes to skin protection from visible UV light damage by inhibiting UV-induced NF-κB activation in keratinocytes, interrupting pathways linked to discolorations, and in laboratory settings, potentially inhibiting collagen-degrading enzymes, ultimately calming irritation and fortifying the skin's natural barrier.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Long-term topical application over 12 months significantly reduced acne lesion counts, improved seborrhea, and restored skin homeostasis with excellent tolerance.
- 02 A dermocosmetic formulation containing this extract effectively treated mild to moderate acne, resulting in a significant reduction of the mean global evaluation of acne (GEA) grade by -36% ± 39% (p < 0.0001) after 8-12 weeks of twice-daily use.
- 03 The extract exhibited a significantly stronger anti-wrinkle effect compared to bakuchiol, reducing the number of forehead wrinkles by 21% and their circumference by 17%, demonstrating efficacy comparable to retinol.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Silymarin exhibits high stability in Brønsted acidic conditions but experiences reduced stability in the presence of Lewis acids or alkaline environments. Prolonged exposure to temperatures exceeding 100 °C may compromise its integrity.
Safety
Safety Profile
Silymarin, the primary active component, is generally considered non-toxic with no adverse effects reported from oral administration. Topical application has consistently demonstrated excellent tolerance in clinical studies. No GHS hazards were identified under OSHA HCS (29 CFR 1910). While an oral LD50 for mice is recorded (681 mg/kg intraperitoneal), specific dermal and inhalation toxicity data are not determined. Its use as a skin conditioning agent in cosmetics is regulated by the EU, implying permissibility, and no specific maximum concentration restrictions from CIR, SCCS, or FDA were found in the available data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Silybum Marianum Fruit Extract is a highly valuable, well-tolerated ingredient offering significant benefits across anti-aging, acne management, and soothing sensitive skin due to its potent antioxidant and anti-inflammatory actions.
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