Science
Mechanism of Action
This extract promotes skin regeneration by stimulating fibroblast proliferation and increasing the synthesis of collagen and intracellular fibronectin, which enhances the tensile strength of new skin tissue and can inhibit the inflammatory phase of hypertrophic scars. Its robust anti-inflammatory action effectively reduces redness and prevents skin reactions, making it ideal for reactive skin types. As a powerful antioxidant, it combats free radical damage and protects against environmental aggressors like UV radiation and pollution. Furthermore, it strengthens the skin barrier, accelerates the healing of minor irritations and breakouts, and boosts hydration by improving moisture retention and stimulating hyaluronic acid synthesis. It also offers antibacterial benefits, helping to calm spots and fight acne-causing bacteria.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 Topical application demonstrated a significant increase in skin hydration, strong anti-inflammatory effects, and overall improved skin quality, with no reported adverse reactions.
- 02 Utilized in leave-on products to deliver anti-photoaging benefits.
Transparency
Dusting Analysis
While the CIR Expert Panel supports concentrations up to 0.5% for anti-photoaging benefits in leave-on products, substantial clinical efficacy for significant hydration, anti-inflammatory action, and broader skin quality improvement has been observed at a higher 5% concentration. Products claiming these extensive benefits, particularly when formulated significantly below the 0.5% threshold (e.g., at or below 0.1%), may not achieve the full clinical potential of the ingredient, indicative of a potential 'dusting' scenario.
The Formula
Formulation
Stability
Optimal stability for Centella Asiatica Extract is observed within a pH range of 4.5 to 6.5. It is soluble in water and partially soluble in hot water. For optimal incorporation, formulations should maintain temperatures below 85°C. It can be dispersed into the oil phase for emulsions, or pre-mixed with glycerin or another solubilizer before integration into the aqueous phase.
Synergies
- Oils
- Glycerin
- Classical Solubilizers
Safety
Safety Profile
The CIR Expert Panel concluded that Centella asiatica-derived ingredients, including root extract, are safe in cosmetic use and concentrations, specifically up to 0.5% in leave-on products, provided the final formulation is non-sensitizing. Although generally well-tolerated, occasional irritation to skin and eyes has been noted. Rare allergic reactions, sometimes linked to madecassoside, can manifest as redness, itching, or eczema-like rashes; therefore, patch testing is recommended. Topical use is considered safe during pregnancy and breastfeeding.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Centella Asiatica Root Extract is a highly valuable ingredient due to its broad spectrum of benefits for skin repair, soothing, hydration, and barrier enhancement, making it suitable for all skin types with strong clinical backing.
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References
Sources