Science
Mechanism of Action
It functions as a structural effect pigment; its flake-like borosilicate glass architecture acts as a microscopic mirror. By reflecting and refracting light across its surface, it creates an immediate 'blurring' and illuminating effect while simultaneously providing structural bulk and a silky, non-gritty skin feel.
Research
Clinical Evidence
High confidence6%
Key findings
- 01 Safety assessment by the CIR (2012) confirmed its status as a non-sensitizing and non-irritating agent at concentrations up to 6%.
- 02 Comparative testing on related borosilicate structures demonstrated zero sensitization in Human Repeated Insult Patch Tests (HRIPT) even at levels as high as 53%.
Transparency
Dusting Analysis
As an aesthetic modifier rather than an active treatment, 'dusting' is less of a concern for efficacy; however, concentrations below 0.5% in illuminating primers may fail to provide the intended optical correction.
The Formula
Formulation
Stability
Insoluble in water and oil; requires physical suspension. Maintain a neutral pH to prevent ion leaching, which can occur at extreme acidic (<4.0) or alkaline (>10.0) levels.
Synergies
- Titanium Dioxide
- Iron Oxides
- Synthetic Fluorphlogopite
Conflicts
- High-shear mixing (mechanical stress can shatter the glass flakes)
- Extremely acidic environments
- Strongly alkaline bases
Safety
Safety Profile
The ingredient is chemically inert and insoluble, meaning it does not penetrate the skin barrier and remains on the surface, making it exceptionally safe for long-term wear.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An excellent, inert optical enhancer that provides clean radiance and texture improvement across all skin types with a high safety profile.
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References
Sources