Science
Mechanism of Action
This ingredient functions as a hydrophobically modified rheology modifier and film-former. Upon application, it organizes into a uniform, water-repellent barrier that locks UV filters and emollients in place, preventing ingredient migration and wash-off while refining the formula's texture to eliminate greasiness.
Research
Clinical Evidence
High confidence2.5%
Key findings
- 01 Clinical evaluation demonstrated that a 2.5% concentration maintains film integrity and UV filter distribution for over 80 minutes during water immersion (US Patent 7014842B2).
- 02 Human patch testing across a 1% to 10% concentration range confirmed the polymer possesses a low potential for skin irritation and sensitization (CIR 2018).
Transparency
Dusting Analysis
As a functional performance ingredient rather than a marketing 'hero' active, it is rarely dusted; however, concentrations below 1% in water-resistant products may indicate an insufficient amount to achieve true 'Very Water Resistant' (VWR) performance.
The Formula
Formulation
Stability
It is water-dispersible and requires neutralization to reach peak functionality. It is highly compatible with cold-process manufacturing and excels in low-viscosity sprayable emulsions.
Synergies
- Organic UV Filters
- Inorganic UV Filters (Zinc Oxide/Titanium Dioxide)
- Hydrophobic emollients
Conflicts
- Cationic surfactants
- Polyquaterniums
- High electrolyte concentrations
- Strong salts
Safety
Safety Profile
The 25% safety limit applies to the broader acrylates copolymer category; however, specialized skincare applications typically utilize concentrations between 1% and 5%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An essential technical polymer for high-performance, water-resistant formulations that require a lightweight, non-greasy skin feel.
Related
Similar Ingredients
Finding similar ingredients…