Kojic acid is widely used in the cosmetics and skincare industry as a skin-lightening agent. It helps reduce the appearance of dark spots, hyperpigmentation, and age spots by inhibiting the production of melanin in the skin. This makes it a popular ingredient in creams, serums, and lotions aimed at achieving a more even skin tone.

In the food industry, it serves as a natural preservative due to its antimicrobial properties, extending the shelf life of various products. Additionally, it is used in the production of certain fermented foods to enhance flavor and quality.

Kojic acid is also employed in medical treatments for conditions like melasma and other skin disorders associated with excessive pigmentation. Its ability to suppress melanin synthesis makes it effective in managing these conditions when used under professional guidance.

In agriculture, it is utilized as a pesticide to protect crops from fungal infections, contributing to healthier plant growth and improved yield. Its versatility across industries highlights its importance in both consumer and industrial applications.