The market for bio-based propylene glycol is valued at approximately USD 4.73 billion in 2025, with a projected compound annual growth rate (CAGR) of 4.5%. Prices are influenced by factors such as feedstock costs and technological advancements in production processes. Bio-based propylene glycol production is expanding in 2025, driven by the demand for sustainable alternatives in pharmaceuticals, food, and automotive industries. Investments in green technologies and bio-refineries are enhancing production capacities, particularly in North America and Europe.