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Moumoujus

POLYACRYLAMIDE-1.

Valuable / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

POLYACRYLAMIDE-1 is a synthetic polymer recognized for its multifunctional role in skincare formulations. It primarily acts as a film-forming and thickening agent, enhancing hydration by minimizing trans-epidermal water loss. Its presence also improves the sensory profile of products by imparting a smooth, silky texture and aiding in formulation stability.

Summary

Film Former Emulsifier Viscosity Modifier Humectant

Science

Mechanism of Action

This polymer functions by creating a thin, breathable film on the skin's surface, which significantly reduces moisture evaporation and thus promotes enhanced hydration. Beyond its hydrating properties, POLYACRYLAMIDE-1 contributes to the desirable texture of creams and gels, improving spreadability and feel. Its emulsifying capabilities are crucial for stabilizing formulations, preventing the separation of oil and water phases. Furthermore, its film-forming action can offer a temporary skin-tightening effect, contributing to a diminished appearance of fine lines.

Research

Clinical Evidence

Low confidence
Effective range 0.05–2.8%
Optimal

2.8%

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 3 – 9
0 7 14

Stability

POLYACRYLAMIDE-1 exhibits good stability within a pH range of 3 to 9, with viscosity gradually increasing at higher pH levels. Strong acidity (pH ≤ 2.5) can lead to a reduction in water solubility due to imidization. While the solid form is heat-stable up to 220-230 °C, solutions may degrade above 110 °C. Solutions are also prone to microbial degradation, necessitating the inclusion of preservatives. High-shear mixing should be avoided during preparation.

Conflicts

  • strong oxidizing agents
  • aluminum
  • copper
  • iron
  • iron salts
  • aluminum ions

Safety

Safety Profile

CIR Status
Safe as used
Max tested
2.8%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Polyacrylamide, including POLYACRYLAMIDE-1, generally safe for cosmetic use within recommended concentrations, finding it non-irritating and non-sensitizing. Formulations must maintain acrylamide monomer levels below 5 ppm (0.0005%). Due to its large molecular size, significant skin penetration does not occur. Concentrations in cosmetic products typically range from 0.05% to 2.8%. Human cutaneous tolerance tests at 5% (w/w) demonstrated good tolerability.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

POLYACRYLAMIDE-1 is a valuable ingredient, contributing significantly to product texture, formulation stability, and skin hydration, while possessing a favorable safety profile across various skin types.

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