Is Polypropylene glycol methyl ether (4 EO) vegan?

PPG-4 Methyl Ether is also known as Polypropylene glycol methyl ether (4 EO).

PPG-4 Methyl Ether is the methyl ether of polypropylene glycol containing an average of 4 moles of propylene oxide, used as a solvent and conditioning agent in cosmetics.

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