Idebenone (CAS NO: 57961-22-7) is a synthetic fat-soluble quinone compound, celebrated as a core anti-aging ingredient in high-end cosmetics for its potent antioxidant properties and cellular repair functions. Mimicking the role of natural antioxidant enzymes in the human body, it efficiently neutralizes free radicals (such as superoxide anions and hydroxyl radicals) while activating mitochondrial energy metabolism, addressing skin aging at its root. As a pale yellow crystalline powder, it offers better stability than traditional antioxidants (e.g., Vitamin C) and combines lipophilicity with skin permeability, suitable for various formulation types.