Science
Mechanism of Action
This bark extract is replete with beneficial phytochemicals, including phenolics, tannins, and flavonoids, which contribute to its diverse skin actions. Its primary mechanism involves robust antioxidant activity, effectively neutralizing free radicals, diminishing oxidative stress, and upregulating the skin's natural antioxidant defense enzymes such as glutathione peroxidase, glutathione S-transferase, glutathione reductase, superoxide dismutase, and catalase. The extract also demonstrates anti-inflammatory effects by inhibiting paw edema induced by various inflammatory mediators, thereby reducing inflammatory responses crucial for tissue repair. It actively promotes wound healing by encouraging re-epithelialization, stimulating collagen synthesis, and fostering matrix synthesis. Additionally, it exhibits antimicrobial and antifungal efficacy against various skin pathogens and has shown potential for skin brightening through the inhibition of tyrosinase, the enzyme responsible for melanin production.
Research
Clinical Evidence
Medium confidence2%
Key findings
- 01 Superior wound healing activity in vivo, with 2% concentration showing superior results in hydrogel formulations.
- 02 Demonstrated tyrosinase inhibitory effects in vitro, with an IC50 value of 190 µg/mL.
- 03 Significant in vitro antioxidant activity, including DPPH radical scavenging, superoxide scavenging, and inhibition of lipid peroxidation.
- 04 Topical application of ethanolic leaf extract showed anti-psoriatic activity in a mouse-tail model, increasing orthokeratosis.
Transparency
Dusting Analysis
Insufficient specific data available to determine common dusting practices or defined dusting thresholds for this ingredient.
The Formula
Formulation
Stability
The extract demonstrates good stability within a neutral to slightly acidic pH range, with topical gel formulations successfully prepared and maintained at approximately pH 6.78 ± 0.01.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has not specifically reviewed Thespesia Populneoides Bark Extract. While related plant extracts (root, whole plant) were noted for 'insufficient data' within a 'draft grouping/clustering', specific safety profiles for the bark extract itself require further assessment. No specific SCCS or FDA status is currently available. Irritancy and comedogenicity are also unknown.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Thespesia Populneoides Bark Extract is a valuable botanical ingredient offering a broad spectrum of benefits, including potent antioxidant, anti-inflammatory, wound healing, and skin brightening activities, making it suitable for diverse precision skincare formulations.
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