Science
Mechanism of Action
By integrating perfluoroalkyl groups (C4-14) onto a dimethicone backbone, this molecule exhibits dual-repellency: it is both hydrophobic (water-repelling) and oleophobic (oil-repelling). This unique chemistry establishes a resilient yet breathable barrier that minimizes transepidermal water loss (TEWL), shields the skin from particulate environmental pollutants, and prevents the migration of cosmetic pigments or sebum.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Indicated by the FDA as a skin protectant that forms a refractive barrier to prevent exogenous substance entry.
- 02 Demonstrated high oil and water repellency in long-wear formulations, significantly contributing to transfer resistance.
Transparency
Dusting Analysis
As a functional polymer rather than a bio-active ingredient, it is typically included at levels required for specific film-forming performance rather than 'dusted' for marketing claims.
The Formula
Formulation
Stability
Highly chemically inert and stable across a broad pH spectrum. It must be dispersed within the silicone phase and is specifically miscible with dimethicone and cyclopentasiloxane.
Synergies
- Cyclopentasiloxane
- Dimethicone
- Mineral UV filters
Conflicts
- Water
- Strong acids
- Strong alkalis
- Non-polar hydrocarbon oils
Safety
Safety Profile
While considered safe for skin application by the CIR Expert Panel, this ingredient belongs to the PFAS class, leading to its phase-out by certain retailers due to environmental persistence concerns.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An elite functional agent for achieving superior transfer resistance and environmental protection, though its PFAS classification may limit its future availability in sustainable portfolios.
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References
Sources