Back to Ingredient Dictionary

POLYBUTYLENE GLYCOL/MDI COPOLYMER

Description

Polybutylene glycol/MDI copolymer is a synthetic ingredient used in various skincare and cosmetic formulations. This versatile polymer is formed through the reaction of polybutylene glycol with methylene diphenyl diisocyanate (MDI). The resulting copolymer exhibits unique properties that make it valuable in skincare applications.

This ingredient functions primarily as a film-former and texture enhancer. When applied to the skin, it creates a thin, flexible film that helps to lock in moisture and protect the skin barrier. The copolymer's structure allows it to form a breathable layer that doesn't occlude the skin, making it suitable for a wide range of skin types.

Polybutylene glycol/MDI copolymer also acts as a viscosity modifier, helping to improve the texture and spreadability of skincare products. It can enhance the sensory experience of creams, lotions, and serums by providing a smooth, silky feel upon application.

In addition to its cosmetic benefits, this copolymer may help to improve the stability and shelf life of formulations. It can aid in the even dispersion of other active ingredients, potentially enhancing their efficacy. While generally considered safe for topical use, individuals with sensitive skin should perform a patch test before widespread application.