Kojic Acid

Kojic Acid at a Glance

• By-product of the fermentation process of malting rice for use in the manufacture of sake
• Helps to brighten an uneven tone
• Contains antioxidant properties
• Has issues with stability when in formulations

Kojic Acid Description

By-product of the fermentation process of malting rice for use in the manufacture of sake (Japanese rice wine). In vitro and in vivo research and animal studies have shown that kojic acid is effective for brightening an uneven skin tone. Kojic acid’s downside is that it’s an unstable ingredient in cosmetic formulations. On exposure to air or sunlight, it turns brown and loses its efficacy. Many cosmetics companies use kojic dipalmitate as an alternative because it’s more stable in formulations. However, there’s no research showing that kojic dipalmitate is as effective as kojic acid, although it’s a good antioxidant.

Kojic Acid References