DefinitionThis section has been translated automatically.
PPG- is the acronym for "polypropylene glycol", the polymer of propylene glycol (1,2-propanediol), a dihydric alcohol. The number after "PPG" indicates the average number of propylene glycol molecular units, for "PPG-9" this is 9 propylene glycol molecular units. "steareth-3" denotes a PEG (polyethylene glycol) ether of stearyl alcohol; the number behind "steareth" indicates the average number of ethylene glycol molecules, here 3.
PPG-9-steareth-3 is used in cosmetic formulations. The substance mixture acts as an emollient (makes the skin smooth and supple).
Prof. Dr. med. Peter Altmeyer