Back to Ingredient Dictionary

PHTHALIC ANHYDRIDE/TRIMELLITIC ANHYDRIDE/GLYCOLS COPOLYMER

Description

PHTHALIC ANHYDRIDE/TRIMELLITIC ANHYDRIDE/GLYCOLS COPOLYMER is a synthetic polymer used in cosmetic and skincare formulations. This complex ingredient functions primarily as a film-forming agent and viscosity controller. Its unique chemical structure allows it to create a protective barrier on the skin's surface, helping to lock in moisture and shield against environmental stressors. The copolymer is particularly effective in water-resistant formulations, making it valuable for long-wearing makeup and sunscreen products.

In skincare, this ingredient enhances the texture and feel of products, contributing to a smooth, non-greasy application. It also aids in the even distribution of other active ingredients throughout the formulation. The copolymer is known for its stability across a wide pH range, making it versatile for various product types. It's generally well-tolerated by most skin types and is considered non-comedogenic, meaning it's unlikely to clog pores.

While effective, formulators must carefully consider the concentration used, as higher levels can potentially lead to a tight or dry feeling on the skin. This ingredient is often found in foundations, lip products, and other cosmetics where long-lasting wear is desired.