Polyglyceryl-2 Isostearate/Dimer Dilinoleate Copolymer

Polyglyceryl-2 Isostearate/Dimer Dilinoleate Copolymer is a synthetic polymer derived from glycerin and fatty acids. It functions as an emollient—a substance that softens and conditions the skin—whilst also helping to control the thickness and texture of formulations.This ingredient works by forming a protective layer on the skin's surface, helping to seal in moisture and create a smoother feel. It's used in a relatively small proportion of skincare products, typically at low concentrations.

This copolymer sits on the skin's outermost layer, where it creates a semi-occlusive film. This film reduces water evaporation whilst allowing skin to breathe, helping to maintain hydration levels over time.Because it's a large polymer molecule, it also helps formulations feel more luxurious and spread evenly, which can enhance the sensory experience and ensure other active ingredients are delivered more consistently across the skin.

This ingredient is typically incorporated into creams, lotions, and serums by the manufacturer, so no special application technique is required. Use your product as directed on the label. If you have very oily skin, formulations containing this ingredient tend to work best when applied to damp skin or used sparingly, as it can contribute to a heavier feel on some complexions.

Generally well-tolerated and considered safe for use in cosmetics. Allergic contact dermatitis is uncommon but possible, as with any ingredient. Patch test if you have known sensitivities to polymers or fatty acid derivatives.