Science
Mechanism of Action
This compound absorbs UV-A/UV-B radiation, dissipating it as harmless heat, and suppresses UV-induced ROS formation, protecting DNA and collagen integrity. It also activates the Nrf2 pathway, enhancing cellular antioxidant defenses and attenuating UV-induced apoptosis.
Research
Clinical Evidence
High confidenceN/A
Key findings
- 01 Topical or oral administration (~20-40 µM) significantly attenuates UVB-induced erythema, epidermal thickening, and oxidative stress markers in vivo, while improving skin barrier parameters.
- 02 Reduces UVB-induced ROS generation and DNA damage in keratinocytes and fibroblasts, suppressing MMP-1 expression.
- 03 Attenuates UV-induced apoptosis and caspase-3 activation in HaCaT cells at 0.1 mg/mL.
- 04 Demonstrates significant antioxidant capacity (51±7% of equimolar Trolox) and activates the Keap1-Nrf2 pathway for enhanced cytoprotection.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Stable in acidic to neutral conditions (pH 1-7), but unstable in alkaline environments prone to oxidation. Store dry, dark, and cold (0-4°C short-term, -20°C long-term) to maintain stability; aqueous solutions are photostable.
Conflicts
- alkaline environments
- high temperatures
Safety
Safety Profile
Formal safety assessments by CIR, SCCS, or FDA are not readily available; some suppliers label Porphyra 334 for 'research use only,' indicating a lack of established cosmetic safety data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While exhibiting strong promise as a multi-functional photo-protective and antioxidant agent, further regulatory safety assessments are required for cosmetic human use.
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References
Sources