Science
Mechanism of Action
The copolymer forms a flexible, continuous barrier when applied to skin, hair, or nails as its solvent dispersant evaporates. This film creates a smooth surface, capable of providing water-resistance and improving product longevity. Additionally, its polymeric structure allows it to increase the viscosity of formulations, acting as an effective thickening agent.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Demonstrated to be a non-sensitizer in human repeat dose insult tests (HRIPT) at concentrations up to 20%.
- 02 Tested as a non-irritant and non-sensitizer in a human repeated insult patch test involving 47 subjects, using a 25% aqueous dilution, for general Acrylates Copolymer.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The polymer contains acid groups with an approximate pKa of 4-5, suggesting ionization within the typical cosmetic pH range of 4-9, which influences its functional properties. It is incorporated into formulations as a dispersion in a solvent, forming a film upon solvent evaporation during application.
Safety
Safety Profile
The CIR Expert Panel deems acrylates copolymers, including this specific one, safe for cosmetic use provided formulations are designed to prevent irritation. For leave-on products intended for dermal exposure, the maximum recommended concentration is 25%. Higher concentrations, up to 98.6%, are reported for general Acrylates Copolymer in nail formulations.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This copolymer is a valuable ingredient for enhancing product texture and durability, creating a smooth film with low irritancy and broad skin compatibility.
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Similar Ingredients
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References
Sources