Cosmetic ingredient

PEG-30 DIPOLYHYDROXYSTEARATE

PEG-30 Dipolyhydroxystearate is a polymeric surfactant used to make emulsions. Its structure joins a portion derived from 12-hydroxystearic acid with polyethylene glycol segments, allowing it to sit at the boundary between water and oil rather than belong only to one phase.

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PEG-30 DIPOLYHYDROXYSTEARATE: what it is

PEG-30 Dipolyhydroxystearate is a polymeric surfactant used to make emulsions. Its structure joins a portion derived from 12-hydroxystearic acid with polyethylene glycol segments, allowing it to sit at the boundary between water and oil rather than belong only to one phase.

It is not a plant oil or an extract; it is a processed material made from fatty components and polyethylene glycol. The 30 in its name refers to the average relationship of ethylene oxide units used in its composition, not to the amount present in a cosmetic product.

PEG-30 DIPOLYHYDROXYSTEARATE: what it does in cosmetics

In lotions, creams, and other products containing both water and oil, PEG-30 Dipolyhydroxystearate helps keep the phases evenly dispersed. Its practical purpose is to hold the mixture together so the product looks and applies more uniformly instead of separating into water and oil during use.

A study of multiple water-in-oil-in-water emulsions tested it as the primary emulsifier at 0.8%, 1.6%, and 2.4%; the 2.4% formulation had the smallest droplets and the greatest stability among the samples examined. That result concerns a complete experimental mixture and does not, by itself, show a treatment or direct skin benefit.

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