Science
Mechanism of Action
It functions as a multi-pathway antioxidant that neutralizes free radicals while suppressing nitric oxide production in skin cells. By modulating specific gene expressions (AKT1 and ERK1/2) and providing significant antimicrobial activity, it reinforces the skin's biological defense against environmental aggressors and pathogenic bacteria.
Research
Clinical Evidence
High confidence1%
Key findings
- 01 Provided significant inhibition of UV-induced reactive oxygen species (ROS) in reconstructed human skin tissue when combined with UV filters.
- 02 Demonstrated robust antimicrobial efficacy against Staphylococcus aureus and S. epidermidis, critical for maintaining a healthy skin microbiome.
- 03 Showed dose-dependent reduction in oxidative stress markers including SOD1, SOD2, and CAT in human skin cell models.
Transparency
Dusting Analysis
Because high-quality diatom extracts are costly and difficult to stabilize, many brands include them at 'label-only' concentrations below 0.1%. Clinical data suggests a minimum of 0.5% is required for tangible photoprotective benefits.
The Formula
Formulation
Stability
Highly thermolabile and photo-sensitive; fucoxanthin content begins to degrade above 25°C. Must be formulated in opaque, airtight packaging and kept away from extreme acidic environments.
Synergies
- Broad-spectrum sunscreens
- Tocopherol
- Ferulic Acid
- Squalane
Conflicts
- Strong oxidizing agents
- L-Ascorbic Acid (due to low pH requirements)
- High-heat manufacturing processes
Safety
Safety Profile
Classified as a Bacillariophyta diatom, it is generally recognized as safe for topical use with very low systemic toxicity (LD50 > 2000 mg/kg).
Your Skin
Skin Compatibility
Our Assessment
Verdict
A sophisticated marine active that excels as a biological sunscreen booster and microbiome protector when formulated at active concentrations.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources