Science
Mechanism of Action
This ingredient functions as an MQ (monosilicate/quadrisilicate) resin that has been structurally enhanced with long-chain C24-28 alkyl groups. Upon application, it organizes into a water-repellent matrix that anchors pigments and active ingredients to the skin's surface, maintaining structural integrity even during facial movement and perspiration.
Research
Clinical Evidence
High confidence15%
Key findings
- 01 In-vitro PMMA plate testing confirmed significant sweat-resistance and long-wear performance when utilized at a 15% concentration in foundation benchmarks.
- 02 Comparative manufacturer analysis demonstrates that the C24-28 alkyl modification provides superior film flexibility and non-transfer properties compared to standard, brittle Trimethylsiloxysilicate.
Transparency
Dusting Analysis
Because this is a functional texture and wear-extender rather than a biological active, 'dusting' is less common; however, levels below 1% may fail to provide the advertised transfer-resistance in long-wear claims.
The Formula
Formulation
Stability
Thermally stable up to 85°C. Highly resistant to oxidation and chemically inert. Best incorporated into the oil phase or pre-dispersed in volatile carriers like isododecane.
Synergies
- Isododecane
- Cyclopentasiloxane
- Mineral UV filters
- Iron Oxide pigments
Conflicts
- Water-only systems
- High-concentration ethanol
Safety
Safety Profile
Evaluated by the CIR in 2013 and 2019; it is non-irritating when formulated correctly. It must meet strict purity standards regarding heavy metals, including Lead (<10ppm) and Arsenic (<3ppm).
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential technical component for achieving high-performance, comfortable wear in decorative and protective skincare.
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References
Sources