Science
Mechanism of Action
This polymer utilizes a 'temperature-triggered' transition to manage ingredient delivery. Upon skin contact, its side chains shift from a crystalline to an amorphous state at a specific transition point, forming a flexible film that entraps pigments and UV filters. This ensures a uniform distribution across the skin's micro-relief, preventing the 'migration' or uneven pooling of active compounds.
Research
Clinical Evidence
High confidence2%
Key findings
- 01 Clinical evaluation demonstrates that a 2% concentration can increase SPF efficacy by 20% or more by optimizing film uniformity.
- 02 Studies indicate enhanced retention of pigments and active ingredients on the stratum corneum through its thermal-release mechanism.
Transparency
Dusting Analysis
While effective at low concentrations, inclusions below 0.5% may fail to provide the structural integrity required for significant SPF boosting or water resistance. Formulations using it for marketing claims without meeting this threshold are likely 'dusting'.
The Formula
Formulation
Stability
Highly stable at room temperature and compatible with a variety of silicones and esters. It requires careful thermal management during processing to ensure the polymer reaches its melting point for proper film formation.
Synergies
- Chemical UV Filters
- Mineral UV Filters
- Cosmetic Pigments
- Silicone Elastomers
Conflicts
- Highly anionic surfactant systems
- Excessive processing heat without controlled cooling
Safety
Safety Profile
The CIR Expert Panel supports its safety in leave-on products up to 25%, though functional levels in precision skincare rarely exceed 5%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential structural component for achieving high-performance, water-resistant UV protection and long-wear pigment stability.
Related
Similar Ingredients
Finding similar ingredients…
References
Sources