Science
Mechanism of Action
The polyacrylamide polymer creates a breathable, flexible film on the skin, aiding moisture retention and enhancing product spreadability. While the acrylamide monomer is a known neurotoxin and carcinogen, its concentration in cosmetics is rigorously limited to prevent absorption.
Research
Clinical Evidence
High confidence3%
Key findings
- 01 Human cutaneous tolerance tests indicated that polyacrylamide up to 5% was well tolerated with no significant irritation.
- 02 The CIR Expert Panel confirmed the safety of polyacrylamide at concentrations up to 3% when residual acrylamide monomer limits are met.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Aqueous solutions are stable across a wide pH range (3-10), providing high viscosity even at low concentrations. Hydrolysis and increased viscosity may occur at pH above 10.
Conflicts
- strong oxidizing agents
- excessive heat (may cause violent polymerization of monomer)
- pH below 2.5 (can affect solubility during polymerization)
- certain ionic surfactants in high concentrations (may cause clumping)
Safety
Safety Profile
The CIR Expert Panel limits residual acrylamide monomer to 5 ppm in finished formulations. Stricter EU regulations require 0.1 ppm for leave-on products, as the large polyacrylamide polymer is non-toxic but the monomer is restricted.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Acrylamide is valuable as a precursor to polyacrylamide, which safely provides essential thickening, film-forming, and emulsion stabilization properties to diverse skincare products under strict regulatory limits.
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References
Sources