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POLYSTEARYL METHACRYLATE

Description

Polystearyl methacrylate is a synthetic polymer widely used in cosmetic and skincare formulations. This versatile ingredient functions primarily as a film-forming agent and viscosity controller. Its molecular structure consists of long-chain fatty acids (stearyl groups) attached to a methacrylate backbone, providing both hydrophobic and hydrophilic properties.

In skincare products, polystearyl methacrylate helps create a smooth, even application and enhances the texture of creams, lotions, and serums. It forms a thin, flexible film on the skin's surface, which can help improve product adherence and provide a temporary smoothing effect. This film-forming capability also assists in delivering active ingredients to the skin more effectively.

As a viscosity modifier, polystearyl methacrylate contributes to the stability and shelf-life of formulations by preventing separation of ingredients. It's particularly useful in oil-in-water emulsions, where it helps maintain the product's consistency over time. The ingredient is generally well-tolerated by most skin types and is considered safe for use in cosmetics at typical concentrations. However, individuals with extremely sensitive skin should perform a patch test before using products containing this polymer.