Is Polytrimethylene Terephthalate vegan?

Polytrimethylene Terephthalate is also known as Polytrimethylene Terephthalate.

This polymer, poly(oxy-1-methylethyleneoxy-1,4-phthaloyl), is a synthetic polyester formed from propylene glycol and terephthalic acid derivatives, used in cosmetics and textiles as a film-forming and structural polymer.

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