Perillyl alcohol is a monoterpene alcohol widely studied for its potential therapeutic applications, particularly in cancer treatment. It has shown promise in inhibiting the growth of various cancer cells, including those of the breast, lung, and prostate, by inducing apoptosis and interfering with tumor cell signaling pathways. Additionally, it is being explored for its chemopreventive properties, potentially reducing the risk of cancer development. Beyond oncology, perillyl alcohol is investigated for its neuroprotective effects, which may benefit conditions like Alzheimer’s disease and brain injuries. It is also used in research for its anti-inflammatory and antioxidant properties, which could aid in managing chronic inflammatory diseases. In the cosmetic and fragrance industries, it is sometimes included in formulations for its pleasant aroma and potential skin-soothing effects. Furthermore, due to its unique scent derived from natural sources like essential oils, it may be used as a flavoring or fragrance additive in food and beverage applications.