Back to Ingredient Dictionary

GLYCERIN/ISOPHTHALIC ACID COPOLYMER CASTORATE

Description

Glycerin/Isophthalic Acid Copolymer Castorate is a multifunctional ingredient used in skincare and cosmetic formulations. This synthetic polymer combines the hydrating properties of glycerin with the film-forming capabilities of isophthalic acid and castor oil derivatives. The resulting compound offers excellent moisture retention and creates a protective barrier on the skin's surface.

The copolymer's unique structure allows it to form a flexible, breathable film that helps reduce transepidermal water loss while maintaining skin elasticity. It provides a smooth, non-greasy feel to products and enhances their spreadability. This ingredient is particularly effective in leave-on formulations such as moisturizers, serums, and sunscreens.

Glycerin/Isophthalic Acid Copolymer Castorate also exhibits emollient properties, helping to soften and smooth the skin. Its film-forming ability can contribute to the water-resistance of sunscreen formulations and improve the longevity of makeup products. The ingredient is compatible with a wide range of cosmetic ingredients and is stable across various pH levels, making it versatile for use in different product types.

In skincare formulations, this copolymer can help improve texture, enhance product performance, and contribute to overall skin hydration and protection.