Science
Mechanism of Action
This extract operates through several intricate pathways to benefit the skin and hair. Its rich polyphenol content, particularly geraniin, delivers powerful antioxidant and anti-inflammatory effects by inhibiting LPS-induced inflammatory mediators via the Akt-mediated NF-κB pathway and up-regulating the Nrf2/HO-1 pathway. It further suppresses MMP-9 expression and mitigates TGF-β1-mediated cell invasion, contributing to skin health and integrity. Beyond these cellular actions, its astringent qualities provide a tightening effect, which can visibly reduce the appearance of pores, fine lines, and wrinkles. It also supports optimal hydration and can balance moisture levels, while showing promise in improving the appearance of hyperpigmentation. In a specialized capacity, it significantly enhances the proliferation and migration of human dermal papilla cells, stimulates Ki-67 protein expression, and elevates mRNA levels of hepatocyte growth factor (HGF) and vascular endothelial growth factor (VEGF), crucial for promoting hair growth.
Research
Clinical Evidence
Medium confidence0.1%
Key findings
- 01 In vitro, concentrations as low as 19.5 ppm (0.00195%) significantly stimulated human dermal papilla cell proliferation, surpassing the effect of 10 µM minoxidil. In vivo, topical application of 0.1% extract for three weeks in C57BL/6 mice led to more pronounced hair growth than 5% minoxidil, evidenced by active anagen phase and reduced inflammatory markers.
Transparency
Dusting Analysis
Given that significant in vitro human dermal papilla cell proliferation was observed at 0.00195%, while a 0.1% concentration was effective for in vivo hair growth, concentrations below 0.001% are likely included for label appeal rather than delivering a discernible impact for most targeted benefits.
The Formula
Formulation
Stability
A glycoprotein component within Geranium Sibiricum Extract maintains optimal and maximal activity across acidic to neutral pH ranges, stable up to pH 9 and temperatures reaching 85°C. The extract itself is soluble in both water and alcohol.
Safety
Safety Profile
No dedicated safety assessments from CIR, SCCS, or FDA were found for Geranium Sibiricum Extract. In vitro research indicated a cytotoxic effect on human dermal papilla cells above 0.01563%. While topical application of 0.1% was effective and seemingly well-tolerated in animal studies, caution and appropriate dilution are advised for concentrated extracts to mitigate potential irritation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Geranium Sibiricum Extract is a valuable multi-functional botanical with substantiated antioxidant, anti-inflammatory, and hydrating properties, alongside promising data for hair growth and skin tone improvement.
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