Kojie San has all-natural kojic acid formula that helps lightens dark spots due to acne, age spots, freckles, sun-damaged skin, and other skin pigmentations. Kojic Acid was discovered in Japan. It is a by-product in the production of Koji, or Malted Rice, for use in the manufacture of Japanese rice wine. In cosmetics, Kojic Acid is popularly known for its excellent whitening effects and antioxidant properties.