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POLYURETHANE-24/METHYL METHACRYLATE CROSSPOLYMER.

Valuable CAS - / HAIR FIXING

This sophisticated cross-linked polymer, featuring porous spherical microbeads, is designed to significantly enhance product aesthetics and performance. It refines skin texture, provides a mattifying effect by absorbing excess oil, and visually minimizes fine lines through light scattering. Beyond its sensory benefits, it markedly improves formulation stability and the durability of products on the skin.

Summary

Film Forming Texture Enhancing Absorbent Mattifying Soft Focus Agent Opacifier Oil Control Formulation Stabilizer Wear Resistance Enhancer Hair Fixing

Science

Mechanism of Action

Comprised of porous spherical microbeads, this ingredient functions by forming a lightweight, flexible film on the skin's surface. This film simultaneously refines skin texture, scatters incident light to create a soft-focus or blurring effect on fine lines, and actively absorbs excess sebum to deliver a prolonged matt finish. Its oil-controlling properties also contribute to the prevention of acne and blackheads. Furthermore, it acts as a robust formulation stabilizer, preventing product degradation, ensuring uniform ingredient dispersion, and bolstering the wear resistance of cosmetic applications.

Research

Clinical Evidence

Low confidence
Effective range 0.1–14%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Due to its inherent crosslinked structure, this polymer is generally insoluble in both water and oil, yet it imparts a lightweight, silky feel to formulations. It significantly enhances product wear resistance, rendering it highly suitable for waterproof and sweat-resistant applications. Additionally, it stabilizes sensitive active ingredients such as retinol, peptides, and salicylic acid. While specific pH data for this exact crosspolymer is not available, analogous methacrylate polymers are recognized for their high stability across wide pH ranges, including strong acids and bases.

Synergies

  • retinol
  • peptides
  • salicylic acid

Safety

Safety Profile

CIR Status
Safe as used
Max tested
14%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has assessed both Polymethyl Methacrylate (PMMA) and Polyurethane-24, and their related cosmetic ingredients, as safe for use in cosmetic products. This determination leveraged the FDA's safety evaluation of PMMA in medical devices. While the raw methyl methacrylate monomer can be an irritant, its polymerized form is considered non-toxic. Although some isolated reports mention potential minor skin or eye irritation with Methyl Methacrylate Crosspolymer, prompting patch test recommendations for highly sensitive individuals, the ingredient is broadly recognized for its biocompatibility and non-comedogenic properties, making it generally suitable for sensitive and acne-prone skin.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

POLYURETHANE-24/METHYL METHACRYLATE CROSSPOLYMER is a valuable ingredient, optimizing product texture and wear, delivering mattifying and soft-focus benefits, and enhancing overall formulation stability for various skin types.

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