Science
Mechanism of Action
This extract functions by delivering several key active compounds, such as resveratrol, quercetin, anthraquinones, stilbene glycosides, and proanthocyanidins. These components combat oxidative stress by neutralizing free radicals and provide anti-inflammatory action to alleviate skin irritations. It acts as a gentle astringent, helping to refine skin texture and reduce blemishes. The extract also supports skin elasticity and collagen production for anti-aging benefits, enhances skin hydration, and can stimulate microcirculation, potentially improving overall skin radiance.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
To maintain optimal stability, the extract should be stored in a cool, dry environment, away from direct sunlight and heat, and in a tightly sealed container. It demonstrates stability for up to 1 year at room temperature and extends to 2 years when refrigerated. The stability of active components like stilbene glycosides (TSG) is influenced by pH, temperature, and irradiation, though a precise optimal pH range for the overall extract is not specified.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has not explicitly evaluated Polygonum Multiflorum Extract for topical use. While topical application is generally deemed less hazardous than oral intake, it's notable that the China Food and Drug Administration (CFDA) has issued warnings concerning hepatotoxicity for oral consumption. The CFDA recommends daily oral intake not to exceed 1.5g for raw products and 3.0g for preparations, cautioning against use by individuals with liver insufficiency or a family history of liver disease, and advising against long-term excessive use or concurrent use with hepatotoxic drugs. When used topically in lower concentrations, it is generally considered safe. However, individuals with sensitive skin should perform a patch test due to rare documented instances of allergic reactions, such as rashes or itching.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polygonum Multiflorum Extract is a valuable botanical ingredient offering comprehensive benefits from antioxidant protection and anti-inflammatory action to anti-aging and moisturizing support for diverse skin types.
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