Kojic acid is a natural compound derived from various fungi, particularly Aspergillus oryzae, and is also a byproduct of fermentation processes involving rice and soy sauce. It is widely used in skincare products for its skin-brightening and anti-pigmentation properties. Kojic acid is known for its ability to inhibit tyrosinase, an enzyme responsible for melanin production, making it effective for reducing hyperpigmentation and promoting a more even skin tone.
Benefits of Kojic Acid
- Skin Brightening: Kojic acid helps lighten dark spots, hyperpigmentation, and melanin-related discolorations.
- Anti-Pigmentation: By inhibiting tyrosinase, it reduces melanin production, resulting in a more even skin tone.
- Antioxidant Properties: Kojic acid has some antioxidant effects, helping protect the skin from oxidative stress.
- Anti-Acne: It may help reduce acne scars and other blemishes caused by excess melanin.
- Compatibility: Kojic acid is compatible with a wide range of other skincare ingredients.
Common Uses of Kojic Acid
Skincare Products
Kojic acid is commonly used in skincare products for its skin-brightening and anti-pigmentation properties. Common applications and recommended usage percentages include:
- Skin Lightening Creams: To reduce dark spots and even out skin tone, typically used at 1–4%.
- Serums: To promote a brighter complexion and reduce hyperpigmentation.
- Anti-Acne Treatments: To help fade acne scars and improve overall skin tone.
- Chemical Peels: To lighten skin and improve its texture.
Product Specifications
- Chemical Formula: C6H6O4
- CAS No: 501-30-4
- Product Type: Skin-brightening agent
- Usage: Skincare, anti-pigmentation
- Purity: Typically 95–99%
- Shelf Life: 2 years or more, depending on storage conditions
Storage and Handling
Store kojic acid in a cool, dry place, in a sealed container to prevent contamination and moisture absorption. Keep it away from direct sunlight and high temperatures to maintain its quality and stability.