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PEG-400/1,4-BUTANEDIOL/SMDI COPOLYMER

Description

PEG-400/1,4-Butanediol/SMDI Copolymer is a synthetic ingredient used in skincare and cosmetic formulations. This water-soluble polymer functions primarily as a film-forming agent and emulsion stabilizer. Its unique structure, composed of polyethylene glycol (PEG-400), 1,4-butanediol, and saturated methylene diphenyldiisocyanate (SMDI), allows it to create a thin, flexible film on the skin's surface.

This copolymer enhances the texture and feel of products, providing a smooth, non-tacky finish. It aids in the even distribution of active ingredients and helps to improve the overall stability of formulations. The film-forming properties contribute to increased moisture retention in the skin, potentially reducing transepidermal water loss.

In skincare applications, PEG-400/1,4-Butanediol/SMDI Copolymer is often used in moisturizers, serums, and sunscreens. It can help to improve the spreadability of products and enhance their ability to adhere to the skin. While generally considered safe for topical use, individuals with sensitive skin should perform a patch test before widespread application. As with many synthetic ingredients, its use is subject to concentration limits set by regulatory bodies to ensure product safety.