The Fenugreek Seed (Trigonella foenum-graecum) is an annual herb which belonging to the family which called as Fabaceae and has been extensively used in various systems of medicine such as traditional medicine systems like Ayurveda and Unani. The Fenugreek seeds are a rich in source of various proteins, steroidal saponins, polyphenols ,fibers, flavonoids, alkaloids, vitamins, and essential fatty acids that are contribute to their therapeutic properties like hair nourishment and scalp health. Hair oil is prepared from fenugreek extracts is increasingly recognized as a natural remedy for hair growth stimulation, prevention of hair loss, dandruff reduction, and overall hair conditioning. Various extraction methods such as including cold pressing, solvent extraction, and infusion in carrier oils, are employed to obtain fenugreek oil. This review summarizes the phytochemistry, methods of preparation, applications, and therapeutic benefits of fenugreek-based hair oil, while highlighting its safety profile and future prospects in cosmetic and pharmaceutical formulations.