Polydiethyleneglycol Adipate/Ipdi Copolymer

Polydiethyleneglycol Adipate/IPDI Copolymer is a synthetic film-forming polymer created through the reaction of polydiethyleneglycol adipate and isophorone diisocyanate (IPDI). It belongs to a class of ingredients designed to create a continuous, flexible film across the skin surface.In skincare formulations, this ingredient functions primarily as a film former, meaning it deposits a thin, invisible layer that can help improve the appearance and feel of the skin without penetrating deeply into the epidermis.

This copolymer works by depositing on the skin surface during application and drying to form a flexible, continuous polymer network. This film adheres to the skin and can conform to its contours, creating a smooth substrate that may reduce the appearance of surface irregularities.The film-forming action is primarily cosmetic rather than therapeutic; it works on the skin's surface rather than affecting deeper skin physiology. The polymer's flexibility allows it to move with the skin without cracking or flaking excessively.

This ingredient is used in finished skincare products rather than as a standalone treatment. Apply products containing this copolymer as directed on the label, typically after serums or treatments and before sunscreen or makeup. The temporary smoothing effect will be most noticeable immediately after application and may diminish as the product is worn throughout the day or as skin naturally flexes and moves.

Generally well-tolerated in cosmetic formulations. As a synthetic polymer, it is unlikely to penetrate the skin barrier and cause systemic effects. Those with sensitivities to film-forming agents or occlusives may wish to patch-test first.