Science
Mechanism of Action
This extract is rich in anti-oxidative compounds such as beta-carotene, which shield the skin from external damage and mitigate irritation. Its polyunsaturated fatty acids, polysaccharides, and proteins contribute to skin nourishment. Specific glycolipids within the extract actively attenuate skin edema and suppress pro-inflammatory mediators like TNF-α, IL-1β, IL-6, and IL-17, alongside inhibiting COX-2 expression. As a hygroscopic algae extract, it enhances skin moisturization, promoting smoothness and suppleness. Furthermore, it demonstrates antibacterial efficacy against common skin bacteria such as Cutibacterium acnes and Staphylococcus epidermidis, and can stimulate natural melanin production for a self-tanning effect.
Research
Clinical Evidence
Medium confidence5%
Transparency
Dusting Analysis
Given the ingredient's multiple documented biological activities, including antibacterial efficacy and anti-inflammatory effects observed at specific concentrations (e.g., >=5% for extract and defined microgram levels for fractions), it is typically incorporated at functionally relevant percentages to achieve its intended benefits rather than at minimal, ineffective levels.
The Formula
Formulation
Stability
Isochrysis galbana extracts are versatile, being obtainable through various solvents like water, alcohol, and carbon dioxide. They can be formulated as powders, pastes, or liquid cultures. For optimal stability, lyophilized biomass should be stored at -20 °C. Glycolipids derived from the extract demonstrate enhanced skin permeation when integrated into a cream base.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has not specifically assessed Isochrysis galbana extract. In such instances, CIR reviews for algae-derived ingredients commonly note 'insufficient data,' indicating a lack of comprehensive safety studies rather than confirmed risks. Its irritancy and comedogenicity are currently unknown.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Isochrysis galbana extract is a valuable, multifunctional ingredient, offering substantial benefits including antioxidant defense, anti-inflammatory effects, antibacterial action, and the ability to stimulate natural melanin production for a more balanced and protected complexion.
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