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POLYMETHYL METHACRYLATE.

Valuable CAS 9011-14-7 / FILM FORMING

Polymethyl Methacrylate (PMMA) is a sophisticated synthetic polymer utilized in precision skincare to visibly refine skin texture and diminish the appearance of imperfections. Its microparticle structure helps create a 'soft focus' effect, contributing to a smoother, more uniform complexion.

Summary

Film-forming Opacifying Slip agent Viscosity controlling Texture enhancer Soft focus agent

Science

Mechanism of Action

Topically, Polymethyl Methacrylate (PMMA) microparticles function by scattering light, which generates a 'soft focus' or blurring effect that minimizes the visibility of fine lines and pores. It also serves as a texture enhancer, imparting a desirable smooth and velvety feel to formulations. Additionally, PMMA can form a protective film on the skin, aiding in moisture retention and offering a barrier against environmental factors. In its application as a dermal filler, PMMA microspheres act as a scaffolding material, providing immediate volume and stimulating the production of new collagen by fibroblasts, which fosters tissue remodeling, boosts skin elasticity, and enhances volume over time.

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

PMMA demonstrates significant chemical stability, ensuring the efficacy of formulations is maintained through temperature fluctuations and prolonged storage. However, its stability is compromised by esters, ketones, chlorinated compounds, and aromatic hydrocarbons, which can lead to dissolution or swelling due to easily hydrolyzable ester groups.

Conflicts

  • Esters
  • Ketones
  • Chlorinated compounds
  • Aromatic hydrocarbons

Safety

Safety Profile

CIR Status
Safe as used
Max tested
45%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Polymethyl Methacrylate is safe for use in cosmetics. The panel observed that monomer levels in cosmetic applications are typically below 100 ppm, a concentration significantly lower than those known to induce dermal sensitization. The CIR Panel also considered cosmetic PMMA to be functionally similar to that used in FDA-approved medical devices, which involve greater systemic exposure, reinforcing its safety profile. Reported cosmetic use concentrations range from 0.01% to 45%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

Polymethyl Methacrylate is a valuable ingredient for its ability to enhance skin texture, provide a soft-focus blurring effect, and contribute to desirable formulation aesthetics and stability in topical skincare products.

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