Film Former
POTASSIUM ALUMINUM POLYACRYLATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A crosslinked aluminum-potassium salt of polyacrylic acid used as an absorbent film former. Large polymer stays on skin surface with no expected systemic uptake.
Potassium aluminum polyacrylate (CAS 67785-56-2) is a superabsorbent anionic polymer formed by crosslinking acrylic acid and neutralizing with potassium and aluminum. It swells in water and is used in cosmetics as a film former, viscosity controller and oil-absorbent matrix in powders and masks. Its very high molecular weight prevents meaningful skin penetration. PubChem CID 6455557 lists no GHS pictograms for the polymer itself. Inhalation of fine powder should be avoided, consistent with any aerosolized mineral/polymer dust.
Function
Skin benefits
- Absorbent polymer for oil control
- Film former for even texture
- Stabilizes emulsions
Known concerns
- Aluminum salt component raises questions for some consumers
- Not suitable as inhalable aerosol
- Limited dermal absorption data for this salt
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related film formers
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.