Science
Mechanism of Action
This ingredient functions as a hybrid organic particulate filter, utilizing a triple-action defense system: it absorbs UV radiation while simultaneously scattering and reflecting light. It features absorption peaks at 310 nm and 350-425 nm, providing a protective shield that extends into the blue light spectrum to prevent cellular damage and pigment induction.
Research
Clinical Evidence
High confidence10%
Key findings
- 01 Lawrence et al. (2021) demonstrated that 10% concentrations provide superior protection against UVA1 and blue light-induced pigmentation (385–405 nm) compared to standard SPF formulations.
- 02 SCCS/1634/21 safety assessment confirmed a NOAEL of 1000 mg/kg bw/day, indicating negligible dermal penetration and high systemic safety.
Transparency
Dusting Analysis
As a structural UV filter, this ingredient is typically used at meaningful concentrations (1-10%) to achieve rated SPF/PA values. Concentrations below 2% are likely insufficient for significant blue light or UVA1 protection claims.
The Formula
Formulation
Stability
Highly photostable; it does not degrade under intense UV exposure. It is typically formulated as an aqueous dispersion to be integrated into the water phase of skincare emulsions.
Synergies
- UVA2 filters
- Antioxidants
- UVB absorbers
Conflicts
- Aerosol propellant systems
- Spray-format delivery
Safety
Safety Profile
Approved for use in the EU, Australia, and Japan. It is not currently FDA-approved for the US market. Strictly prohibited in spray or aerosol products due to inhalation risks.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An elite UV filter essential for high-performance sunscreens targeting blue light and long-wave UVA1 protection.
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References
Sources