Science
Mechanism of Action
This extract functions as a robust antioxidant complex, primarily due to its diverse carotenoid profile, including colorless phytoene and phytofluene from Dunaliella salina, and the potent astaxanthin from Haematococcus pluvialis. It actively combats skin aging by exhibiting strong antiglycation properties, which reduce the formation of advanced glycation end products (AGEs) and their associated receptor levels. Furthermore, it exerts significant anti-inflammatory effects, evidenced by a reduction in inflammatory interleukins (IL6 and IL8) and an upregulation of the crucial antioxidant and anti-inflammatory regulator, NRF2. The extract also aids in reversing oxidative damage caused by environmental pollution, supports skin health through its beta-carotene content (a vitamin A precursor), replenishes vital minerals like magnesium, calcium, iodine, and potassium, and strengthens overall skin immunity. Its carotenoid derivatives may also contribute to skin brightening by neutralizing hydroxyl radicals and preventing UVA/UVB induced darkening, while also forming a protective film to maintain optimal skin hydration.
Research
Clinical Evidence
Medium confidence1%
Key findings
- 01 In a clinical study under intense solar exposure, a 1% Dunaliella salina extract in formulation significantly reduced skin's glycation scores, strengthened its resilience to irritation, and enhanced its capacity to fight inflammation-inducing provocations. It also strongly reduced skin redness and the appearance of wrinkles compared with placebo.
- 02 In an ex vivo study, 0.5% Dunaliella salina extract treatment for 24 hours resulted in significant reductions in levels of inflammatory interleukins 6 (by 26%) and 8 (by 45%), and significant enhancement of the key antioxidant and anti-inflammatory regulator nuclear factor erythroid 2-related factor 2 (NRF2) (by 19%).
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As a hydrophobic, oil-soluble ingredient rich in carotenoids, this extract is susceptible to oxidation and degradation. To preserve its integrity and efficacy, especially for astaxanthin, advanced formulation methods such as microencapsulation are frequently employed. Extraction processes typically require controlled, oxygen and light-free environments utilizing organic solvents or supercritical CO2 to maintain the stability of these sensitive compounds.
Safety
Safety Profile
While the combined ingredient's CIR status is not specifically 'safe as used', Dunaliella Salina Extract is part of a broader CIR safety assessment for red algae-derived ingredients. EWG Skin Deep rates Dunaliella Salina Extract with 'LOW' concerns for cancer, allergies, immunotoxicity, developmental and reproductive toxicity, and use restrictions. Haematococcus pluvialis extract (astaxanthin) holds a Generally Recognized As Safe (GRAS) status by the FDA for specific food applications, and oral intake studies suggest no adverse effects. It is important to note that excessive ingestion of beta-carotene can cause a harmless and reversible temporary orange/yellow skin discoloration (carotenodermia).
Your Skin
Skin Compatibility
Our Assessment
Verdict
This algae extract offers comprehensive benefits, serving as a powerful antioxidant, anti-inflammatory, and anti-aging ingredient that supports skin health and resilience across all skin types.
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