Kojinsäure

Kojic acid is a natural substance produced by several species of fungi, particularly those in the genus Aspergillus. It is primarily known for its use in skincare products due to its ability to inhibit tyrosinase, an enzyme responsible for melanin production. This inhibition leads to a lightening effect on the skin, making it a popular ingredient in treatments for hyperpigmentation, such as dark spots, melasma, and acne scars.

The production of kojic acid typically involves the fermentation of carbohydrates by these specific fungi. It has also found applications in the food industry as a preservative, preventing browning in fruits and vegetables, and in cosmetics as an antioxidant. While generally considered safe for topical use, some individuals may experience skin irritation, redness, or contact dermatitis. The concentration of kojic acid in skincare products varies, and higher concentrations may increase the risk of adverse reactions. Further research is ongoing to fully understand its long-term effects and potential applications.