Kojic acid is a natural ingredient that has many potential benefits for the skin, including: 

Skin lightening
Kojic acid can help even out skin tone and lighten hyperpigmentation, age spots, and sun damage. 

Anti-aging
Kojic acid can help minimize the appearance of wrinkles and fine lines around the eyes. 

Antimicrobial properties
Kojic acid can help fight bacterial skin infections and treat acne. It may also help lighten acne scars. 

Antifungal properties
Kojic acid can help prevent and treat fungal infections like athlete's foot, yeast infections, and ringworm. 

Antioxidant properties
Kojic acid can help reduce free radical damage to the skin caused by stress, sun, and pollution. 

Safe for all skin types
Kojic acid is safe and effective for all skin types, though people with sensitive or acne-prone skin should do a spot test first. 

Stable compound
Kojic acid is more stable than vitamin C and doesn't degrade as quickly when exposed to air or light. 

Kojic acid is a natural metabolite derived from a fermented fungus. It's used in a variety of products, including skin creams, lotions, soaps, and dental care products.