Used in the cosmetic industry for its emollient properties, petroselinic acid helps improve skin hydration and texture in lotions and creams. It is also investigated for its potential anti-inflammatory effects, making it useful in topical treatments for skin conditions. In the pharmaceutical field, it serves as a building block for synthesizing compounds with biological activity. Additionally, due to its structural similarity to other fatty acids, it is studied for metabolic and nutritional research, particularly in understanding fat metabolism and lipid-related disorders.