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ACRYLIC ACID/ISOPROPYLACRYLAMIDE/MIBK ACRYLAMIDE CROSSPOLYMER.

Valuable / FILM FORMING, VISCOSITY CONTROLLING

This advanced polymer primarily functions as a film-forming and viscosity-controlling agent in cosmetic formulations. It creates a continuous film on skin and hair, while also precisely modulating product consistency and texture.

Summary

Film-forming Viscosity Controlling Binder Hair Fixative Emulsion Stabilizer Skin Conditioning

Science

Mechanism of Action

This ingredient operates by forming a continuous, flexible film across the surface of the skin, hair, or nails, contributing to product longevity and hold. Its polymeric structure allows it to effectively increase or decrease the viscosity of a cosmetic product, thereby controlling its texture and flow properties. As a binder and hair fixative, it also contributes to the overall stability and performance of the formulation.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

While specific optimal pH for the stability of this exact crosspolymer is not explicitly detailed, related acrylic acid and acrylamide copolymers exhibit pH-responsive swelling behavior. Higher swelling, which can influence functional properties like thickening or film formation, has been observed at pH 7.4 compared to acidic conditions (pH 1.2), suggesting its performance may be pH-dependent.

Conflicts

  • Nitrosating systems, due to the potential for nitrosamine formation with related amide-containing copolymers.
  • Formulations with residual acrylamide monomer concentrations exceeding 5 ppm.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
5 ppm (for acrylamide monomer)%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that acrylamide/acrylate copolymer ingredients, a category inclusive of this crosspolymer, are safe under present use and concentration practices. This safety assessment is critically dependent on the concentration of free acrylamide monomer in cosmetic formulations not exceeding 5 ppm. The large molecular weight of these polymers is considered to prevent dermal absorption, and they are insoluble, minimizing the risk of nitrosamine or nitrosamide formation. Related acrylamide-acrylic acid resins are also permitted as food additives under specific limitations by US FDA regulations.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

This crosspolymer is a valuable functional ingredient, primarily serving as an effective film-former and viscosity controller, with a favorable safety profile when residual acrylamide monomer concentration is rigorously maintained below 5 ppm.

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