Science
Mechanism of Action
Sargassum siliquastrum extract operates through multiple pathways to benefit the skin. It acts as a powerful antioxidant by actively scavenging free radicals, mitigating UV-induced oxidative stress, and inhibiting key enzymes like collagenase, which are associated with skin aging. Its polysaccharide content facilitates moisture retention and aids in skin repair processes. The extract exerts significant anti-inflammatory effects by downregulating the NF-κB signaling pathway, thereby inhibiting the expression of inducible nitric oxide synthase (iNOS) mRNA and protein, and reducing the release of pro-inflammatory cytokines such as IL-1β, IL-6, and TNF-α. Furthermore, it demonstrates skin-brightening potential by inhibiting mushroom tyrosinase activity (with an IC50 of 19.85 μg/mL) and subsequently decreasing melanin synthesis. The extract also supports enhanced skin barrier repair and stimulates cell regeneration. Its polyphenols effectively absorb UV-A and UV-B radiation, while its fucoidan fraction provides photoprotective benefits against UVB-induced skin damage.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 An in-vitro study demonstrated that an ethanol extract at a concentration of 500 μg/mL significantly reduced lipopolysaccharide (LPS)-induced nitric oxide (NO) production by 60.1% ± 0.9% in a dose-dependent manner, indicating potent anti-inflammatory efficacy without observed toxicity.
- 02 General topical formulations containing various Sargassum extracts have been reported in limited clinical and animal studies to potentially improve skin hydration and barrier function; however, these studies are often small and not consistently placebo-controlled for Sargassum siliquastrum specifically.
Transparency
Dusting Analysis
Given its diverse range of documented benefits, including antioxidant, anti-inflammatory, and brightening properties, Sargassum Siliquastrum Extract is likely incorporated as a functional active ingredient rather than merely for label claims at negligible concentrations.
The Formula
Formulation
Safety
Safety Profile
No specific CIR, SCCS, or FDA status was found. However, Sargassum siliquastrum is widely consumed as an edible brown seaweed in Korea and is considered a functional food source, implying general safety. In-vitro studies showed no obvious toxicity at tested concentrations up to 500 μg/mL.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sargassum Siliquastrum Extract is a versatile and valuable ingredient, offering broad antioxidant, anti-inflammatory, moisturizing, and brightening benefits, although more extensive human clinical trials specific to this extract would further solidify its precise topical efficacy.
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References
Sources