Science
Mechanism of Action
This sophisticated ingredient blend contributes to skin health through a comprehensive array of mechanisms. Angelica Gigas Root Extract functions as a robust antioxidant, actively combating signs of skin aging and offering protection from UV radiation. It effectively inhibits tyrosinase activity, thereby reducing melanin synthesis, which is crucial in addressing hyperpigmentation, melasma, freckles, and age spots. Furthermore, its anti-inflammatory and antibacterial properties make it beneficial for acne support and promoting wound healing. The extract also enhances skin hydration by stimulating aquaporin 3 expression for improved water circulation and fortifying the epidermal barrier. It significantly contributes to anti-wrinkle effects by reducing the activity of matrix metalloproteinases (MMP-1 and MMP-2), enzymes responsible for collagen degradation, and by stimulating de novo collagen synthesis. Steviol Glycosides complement these actions with their recognized anti-inflammatory and antioxidant activities. Chitosan acts as a natural humectant and moisturizer, an antioxidant, and exhibits antimicrobial and anti-inflammatory properties. It actively promotes wound healing by forming a supportive network structure, stimulating collagen synthesis, and fostering tissue regeneration. Chitosan also offers UV protection and can function as a rheology modifier; its primary mechanism of action in most formulations is largely confined to the skin/external environment interface due to its minimal skin penetration.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Angelica Gigas Nakai root extract (ARE) increased type I collagen production by 40% in human dermal fibroblasts, observed at a concentration of 50 μg/ml in an in vitro study.
- 02 The application of an Angelica Gigas Root Extract lotion significantly reduced the presence of crow's feet wrinkles and led to decreased photodamage scores after 8 weeks in a double-blinded in vivo clinical study.
- 03 Aqueous Angelica extract, present in cosmetic compositions at 0.01% to 10% by weight, is associated with anti-aging and moisturization benefits, improving skin moisture and smoothness.
- 04 Chitosan-based hydrogels exhibited pronounced wound healing properties and stimulated the antioxidant defense system in diabetic rats, particularly in the initial days following wounding.
Transparency
Dusting Analysis
No data available indicates that this ingredient blend is commonly 'dusted' or used at concentrations below a functional threshold.
The Formula
Formulation
Stability
Steviol glycosides are reported to exhibit excellent heat and pH stability. Chitosan's solubility is pH-dependent, generally dissolving in diluted inorganic and organic acids at a pH lower than its pKa (approximately 6.3). While higher molecular weight chitosan requires acidic aqueous media for solubility, chitosan oligomers are soluble across a broad pH range, including physiological pH 7.4. The optimal pH range for the stability of the combined extract is not explicitly defined in the provided data.
Conflicts
- Chitosan may exhibit incompatibility with divalent cations (e.g., dicalcium phosphate dihydrate, calcium carbonate, and magnesium stearate) due to the potential formation of coordination complexes involving its amino groups.
Safety
Safety Profile
Steviol Glycosides have received 'Generally Recognized As Safe' (GRAS) status by the FDA for use as a food additive, and the EFSA established an acceptable daily intake (ADI) of 4 mg/kg/day. Angelica Gigas Root Extract boasts widespread use in traditional medicine, and chitosan is generally recognized for its biocompatibility and non-toxicity. However, no specific Cosmetic Ingredient Review (CIR) or Scientific Committee on Consumer Safety (SCCS) assessments for the combined ingredient or its individual components, specifically for cosmetic skincare use, were identified in the available research. The CIR designates ingredients not listed in the FDA's Voluntary Cosmetics Reporting Program under a category for 'No Reported Uses'.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This multi-functional ingredient blend is valuable for its scientifically supported anti-aging, moisturizing, and protective benefits, primarily driven by Angelica Gigas Root Extract, with complementary effects from Steviol Glycosides and Chitosan.
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