Trans-petroselinic acid is primarily utilized in the production of specialized industrial lubricants due to its unique structural properties, which enhance thermal stability and reduce friction. It is also employed in the synthesis of high-performance biofuels, offering improved combustion efficiency and lower emissions. In the cosmetic industry, it serves as a key ingredient in skincare formulations, providing moisturizing and anti-inflammatory benefits. Additionally, trans-petroselinic acid is used in the development of biodegradable plastics, contributing to environmentally sustainable material solutions. Its application extends to the pharmaceutical sector, where it is studied for its potential antioxidant and therapeutic properties.