Methyl Methacrylate Crosspolymer

Methyl Methacrylate Crosspolymer – Porous Sebum-Absorbing Polymer for Soft Focus and Matte Finish

Basic Information

• CAS Number: 25777-71-3

• Molecular Formula: C₁₅H₂₂O₆

• Appearance: White to off-white fine powder

• Particle Size: 6–10 µm (typical)

• Solubility: Insoluble in water and organic solvents; dispersible in oil and water phases

• Storage: Store in a cool, dry place, protected from moisture and direct sunlight

Overview
Methyl methacrylate crosspolymer is a crosslinked copolymer of methyl methacrylate and glycol dimethacrylate. It is supplied as a fine, porous powder with a spherical or irregular particle morphology. The three‑dimensional network structure creates microspheres or porous granules that provide unique sensory and functional benefits in cosmetic formulations. It is widely used as a texture enhancer, sebum absorber, and optical modifier.

Mechanism of Action
The porous structure of the crosspolymer absorbs excess sebum and moisture from the skin surface, reducing shine and providing a mattifying effect. Its spherical particles scatter light, creating a "soft focus" effect that visually blurs fine lines, wrinkles, and imperfections. This optical softening improves the appearance of the skin without heavy coverage. Additionally, the polymer improves the spreadability and slip of formulations, contributing to a smooth, silky, powdery finish.

Key Properties

• Sebum absorption: Porous structure absorbs excess oil and moisture, reducing shine.

• Mattifying effect: Provides a matte, non‑greasy finish.

• Soft focus effect: Scatters light to visually blur imperfections.

• Texture enhancement: Improves slip, spreadability, and sensory feel.

• Film‑forming: Contributes to the durability and wear of makeup.

• Non‑comedogenic: Does not clog pores.

• Compatibility: Compatible with a wide range of cosmetic ingredients.

Applications

• Color cosmetics: Powders, foundations, primers, blushes, and eyeshadows – improves texture, provides matte finish, extends wear, and creates a soft focus effect.

• Skin care: Mattifying creams, oil‑control lotions, and anti‑shine serums – absorbs excess oil, reduces shine, and leaves a smooth, powdery feel.

• Sunscreens and BB creams: Enhances spreadability, reduces tackiness, and provides a soft, velvety finish.

• Hair care: Dry shampoos and styling powders – absorbs oil and adds volume.

• Other: Used as a carrier for active ingredients, oils, and fragrances.

Key Benefits

• Provides effective sebum absorption and shine control.

• Creates a soft focus, blurring effect for a more even skin appearance.

• Improves product texture, slip, and sensory feel.

• Enhances the durability and wear of makeup.

• Reduces tackiness and greasiness in formulations.

• Safe, non‑irritating, and suitable for all skin types.

• Compatible with a wide range of cosmetic ingredients.

Recommended Use
Typical usage levels range from 1–10% of the formulation, depending on the desired oil absorption, texture, and matte effect. For optimal dispersion, incorporate into the oil or powder phase with moderate mixing. Can be combined with other powders, pigments, and film‑formers for tailored performance.

Safety and Handling

• Generally recognized as safe for use in cosmetics at recommended concentrations.

• Low irritation potential; well‑tolerated by skin.

• Avoid inhalation of dust – use appropriate personal protective equipment (gloves, dust mask, safety goggles).

• Store in a cool, dry place, away from direct sunlight and moisture.

• Shelf life: typically 24 months under recommended storage conditions.

Quality Assurance
Each batch is tested for particle size distribution, purity, and oil absorption capacity to ensure consistent performance.