Idebenone is primarily used in the treatment of mitochondrial diseases, particularly Leber's Hereditary Optic Neuropathy (LHON), due to its ability to improve mitochondrial function and reduce oxidative stress. It acts as an antioxidant, protecting cells from damage caused by free radicals, and supports energy production in cells. Additionally, idebenone is explored for its potential benefits in neurodegenerative conditions like Alzheimer's disease and Parkinson's disease, where it may help slow disease progression by enhancing cellular energy metabolism and reducing oxidative damage. In dermatology, it is used in anti-aging skincare products to combat oxidative stress and promote skin health. Its neuroprotective and antioxidant properties make it a valuable compound in both medical and cosmetic applications.