Appearance: white crystalline powder
Cas No:501-30-4
EINECS No: 207-922-4
Molecular Formula: C6H6O4
Kojic acid is an organic compound with a chemical formula of C6H6O4. It is mainly used as a whitening agent, food additive, and also as a preservative, preservative, and color-protecting agent.
Kojic acid is a natural organic compound produced by several fungal species, notably Aspergillus oryzae (commonly used in Japanese sake brewing). It appears as a white crystalline powder and is best known for its skin-lightening properties. The molecule works primarily by inhibiting tyrosinase, the key enzyme responsible for melanin synthesis in the skin. By chelating copper ions at the enzymeâ??s active site, kojic acid effectively reduces and prevents hyperpigmentation, dark spots, and melasma. Beyond depigmentation, it exhibits antioxidant, antibacterial, and antifungal activities, helping to protect skin from oxidative stress and minor infections. Consequently, it is widely formulated into serums, creams, and soaps at concentrations typically between 1% and 2%. While considered generally safe for cosmetic use, kojic acid can cause contact dermatitis or mild irritation in sensitive individuals. It is also sometimes used as a food additive to prevent browning. Overall, kojic acid remains a popular, nature-derived ingredient for brighter, more even-toned skin.
