Science
Mechanism of Action
Upon application, the polymer dries to create a continuous, uniform film on the skin or hair. This film notably improves water resistance in sunscreens and extends the wear time of color cosmetics like foundations and mascaras.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 A human repeated insult patch test (HRIPT) involving 47 subjects found a 25% aqueous dilution of a related acrylates copolymer to be neither an irritant nor a sensitizer.
- 02 Research emphasizes maintaining residual 2-ethylhexyl acrylate monomer at trace levels, as 21% showed carcinogenic effects in mice, whereas 2.5% did not.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This polymer is stable across a wide pH range of 2.0-10.0 and is typically supplied as an aqueous emulsion.
Synergies
- Surfactants
- Oils
- Pigments
- Carbomers
Conflicts
- Strong oxidizing agents
- Environments below pH 2.0
- Certain cationic ingredients
Safety
Safety Profile
The CIR Expert Panel considers acrylates copolymers safe when formulated to be non-irritating, provided residual monomers like styrene or 2-ethylhexyl acrylate are kept at trace levels to ensure non-toxicity.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A valuable film-former and viscosity modifier, safely enhancing product longevity and water resistance across all skin types with demonstrated low irritancy.
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References
Sources