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Moumoujus

METHYL METHACRYLATE/TRIMETHOXYSILYLPROPYL METHACRYLATE CROSSPOLYMER.

Valuable CAS - / ANTIOXIDANT, SKIN CONDITIONING, SKIN PROTECTING

This advanced crosspolymer functions as a multi-tasking ingredient within precision skincare, expertly managing excess sebum, refining skin texture, and enhancing product longevity. Its unique porous microsphere structure also contributes to a soft-focus optical effect, visibly blurring imperfections.

Summary

Absorbent Film-forming Viscosity Increasing Texture Enhancer Optical Perfector Active Ingredient Delivery Aid Product Adherence Booster Pigment Dispersant

Science

Mechanism of Action

METHYL METHACRYLATE/TRIMETHOXYSILYLPROPYL METHACRYLATE CROSSPOLYMER primarily functions by absorbing excess sebum from the skin's surface, which contributes to preventing acne and blackheads. It forms a protective, smoothing film on the skin and acts as porous microspheres, facilitating the controlled release of active ingredients for gentle, sustained action and improved formula stability. Furthermore, it offers an optical perfecting effect by scattering light, creating a 'soft-focus' appearance that minimizes the visibility of fine lines and pores. It also enhances cosmetic product adherence and longevity, preventing common issues like smudging or caking, and aids in the uniform dispersion of pigments.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

This ingredient, as a crosslinked polymer, forms a stable, three-dimensional network structure. However, one of its monomer components, 3-(Trimethoxysilyl)propyl methacrylate (a silane), is known to react with water. While the finished crosspolymer is durable, consideration for moisture might be important during formulation or for the long-term stability of the silane linkages within the polymer matrix.

Safety

Safety Profile

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

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Methyl Methacrylate Crosspolymer and related polymers are safe for cosmetic use. This assessment is based on the large polymer size, which prevents skin penetration, and low monomer levels (<100 ppm) below known dermal sensitization thresholds. While generally safe, minor irritation to the skin and eyes is possible, thus a patch test is recommended, particularly for individuals with sensitive skin. Typical cosmetic use percentages range from 0.1% to 14%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A valuable multi-functional polymer that precisely manages oil, refines skin texture, and enhances cosmetic performance while providing a subtle optical perfecting effect.

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