Dipropylene Glycol Costs Increase as Propylene Oxide Prices Remain Elevated

Procurement teams for dipropylene glycol (DPG) faced increased costs in June 2026, driven by elevated prices for its key feedstock, propylene oxide. Propylene oxide, which represents approximately 65% of DPG production expenses, saw prices ranging from $1,161 per metric ton in China to $1,246 per metric ton for US CIF arrivals and $1,283 per metric ton in Germany in early 2026. This direct correlation means that sustained high propylene oxide costs quickly translate to higher DPG contract and spot prices.

Demand-side factors are also contributing to market tightness. The personal care and cosmetics sector, a significant consumer of DPG accounting for about 31% of global consumption, is experiencing increased demand due to a shift towards eco-friendly and lower-toxicity formulations. DPG's characteristics as a safe, biodegradable solvent and fragrance carrier have positioned it as a preferred alternative to other solvents facing regulatory scrutiny.

International sourcing of DPG has become more complex due to tariff-driven cost increases on imported products in the US and EU markets. Trade policies have raised the landed costs for DPG and its derivatives, particularly impacting industries like coatings, electronics, and cosmetics that rely on imported specialty grades.

The DPG supply market is concentrated among major chemical producers including Dow, BASF, Shell, LyondellBasell, and INEOS. This concentration means that during periods of tight propylene oxide availability or rapidly rising feedstock costs, larger contract customers are typically prioritized, potentially leading to allocation constraints for smaller spot buyers.

For procurement professionals, the current environment necessitates a review of contract structures, an expansion of supplier qualifications to ensure dual sourcing, and close monitoring of propylene oxide price benchmarks. While long-term demand for DPG remains positive due to growth in polyurethanes and personal care, the combination of feedstock costs and tariffs requires proactive strategies to manage potential supply gaps and cost pressures.