Is Oxirane, methyl-, polymer with oxirane, monobutyl ether vegan?

PPG-4-Buteth-4 is also known as Oxirane, methyl-, polymer with oxirane, monobutyl ether.

PPG-4-Buteth-4 is a synthetic polyether formed from the polymerization of propylene oxide and ethylene oxide with butyl alcohol, used in cosmetics as a solvent or emollient.

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