Science
Mechanism of Action
It acts as a high molecular weight, carboxylated acrylic film-former, creating a flexible and continuous barrier on the skin's surface. This film effectively traps active ingredients, boosts adherence, and reduces transepidermal water loss (TEWL) and rub-off.
Research
Clinical Evidence
High confidence1%
Key findings
- 01 At 1.0-5.0%, studies showed significant enhancement of water resistance and SPF retention, maintaining 100% UV filter adherence after water immersion.
- 02 In-vivo SPF testing at 1.0% demonstrated a stable film that reduced TEWL and maintained high SPF values during wear.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Supplied as an aqueous dispersion, it becomes soluble/dispersible upon neutralization, or can be solubilized in oil systems. It exhibits stability across wide temperatures and shear conditions.
Conflicts
- Strong cationic surfactants
- Highly acidic environments (pH < 3.0)
- Large amounts of electrolytes/salts
Safety
Safety Profile
The CIR Expert Panel deemed it safe for cosmetic use when formulated to be non-irritating, with residual monomer levels strictly controlled.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This robust film-former is valuable for enhancing product longevity, water resistance, and active ingredient adherence in high-performance skincare formulations.
Related
Similar Ingredients
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References
Sources