PEG-7 Amodimethicone

PEG-7 Amodimethicone is a modified silicone polymer—specifically, a dimethicone (silicone oil) that has been chemically altered with polyethylene glycol (PEG) chains. This modification makes it water-soluble or water-dispersible, unlike standard silicones, allowing it to blend more easily into lighter formulations.In skincare and haircare products, it functions primarily as a conditioning agent and humectant. It forms a protective film on the skin or hair surface, helping to lock in moisture and create a smoother, more refined texture.

PEG-7 Amodimethicone works through a dual mechanism. The silicone backbone deposits a conditioning film on the skin surface, which seals in hydration and creates a smooth, soft feel. The polyethylene glycol chains attached to the silicone molecule allow this ingredient to dissolve or disperse in water, making it easier to rinse away and less likely to build up than conventional silicones.As a humectant, it also draws moisture into the outer layers of skin, contributing to improved hydration and a more supple appearance.

This ingredient is typically incorporated into serums, moisturisers, and lightweight creams by the formulator, so no specific application technique is needed on your part. Use products containing it as directed on the packaging. It pairs well with other hydrating and conditioning ingredients and is unlikely to interfere with active treatments like retinoids or vitamin C, though patch testing is always prudent when layering multiple products.

PEG-7 Amodimethicone is generally well-tolerated and considered safe for cosmetic use. It is non-irritating for most skin types, though those with silicone sensitivity should patch test first. It is approved for use in cosmetics in the UK and EU.