Polystearyl Methacrylate is a cosmetic ingredient used as film forming. Assessed as safe by the CIR.
CAS #
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Form
Powder
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Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Creates Protective Barrier
Traditional Use
A synthetic polymer developed for use in cosmetics as a film-forming and texturizing agent. Created to provide improved texture, water resistance, and sensory properties in modern skincare and makeup products.