Science
Mechanism of Action
This amphiphilic molecule functions by lowering interfacial tension between disparate phases. Its silicone backbone offers emolliency and a silky skin feel, while its cetyl alkyl group anchors into the oil phase and its PEG/PPG chains stabilize the aqueous phase, creating robust water-in-silicone or water-in-oil emulsions.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Demonstrated significant reduction in color transfer and a dramatic increase in SPF efficiency at concentrations as low as 0.4%.
- 02 Technical evaluations indicate optimal sensory performance and emulsion stability occur between 1.5% and 2.5%.
Transparency
Dusting Analysis
Because this ingredient is an emulsifier rather than an active, it is rarely 'dusted' for marketing purposes. It is typically used at functional levels to achieve specific formula textures, with 0.4% being the minimum threshold for noticeable performance gains in sun protection and transfer resistance.
The Formula
Formulation
Stability
Highly resilient across a wide pH spectrum. For maximum long-term stability, the addition of 1-2% electrolytes like Sodium Chloride or Magnesium Sulfate to the water phase is recommended.
Synergies
- Electrolytes (Magnesium Sulfate)
- Mineral UV Filters
- Inorganic Pigments
Conflicts
- Extended heating above 60°C
- High concentrations of ethanol-based solvents
Safety
Safety Profile
With a high molecular weight exceeding 1000 Da, dermal absorption is negligible. It is non-sensitizing and has been cleared for use in eye-area products up to 13.6-15%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential structural component for creating high-performance, water-resistant textures with a superior scientific profile for stability and skin safety.
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References
Sources