070-000-345 Kojic Acid, CAS 501-30-4

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Synonyms 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one
Source fermentation
Keywords Whitening, spot solution
Related products Licochalcone A,  Biotin,  Stearyl Glycyrrhetinate,  Monoammonium Glycyrrhizinate


Kojic Acid Specifications

Product Name Kojic Acid
CAS Registry Number 501-30-4
Molecular Formula C6H6O4
Molecular Weight 142.11 g/mol
Purity 99 %
Appearance White powder
Package 1kg-25kg
Shelf life 2 years
Functions Whitening, spot solution, inhibition of tyrosinase activity

Kojic Acid Description

Since it was discovered, kojic acid was first used in food, medicine, agriculture, and other fields. In the food field, it can be used as a food additive, which plays a role in preservation, antiseptic, and anti-oxidation. Later, some research institutions found that “Kojic acid” has a good whitening effect and can lighten stains. After this application was discovered, “Kojic acid” began to be used as a skin whitening agent and was widely used in whitening and lightening products.

Kojic acid is a chemical derived from mushrooms, but it can also be created during the sake brewing process from fermented rice.

Because of its ability to really penetrate the layers of your skin and stop the production of melanin, kojic acid is usually sought out as a spot-fading treatment and is often considered a less-aggressive answer to hydroquinone.

Kojic Acid

Kojic Acid Application

  • As an ingredient in whitening personal care products


  1. Lee, Y.S., Park, J.H., Kim, M.H., et al. Synthesis of tyrosinase inhibitory kojic acid derivative. Arch. Pharm. (Weinheim) 339(3), 111-114 (2006).
  2. Rodrigues, A.P., Farias, L.H., Carvalho, A.S., et al. A novel function for kojic acid, a secondary metabolite from Aspergillus fungi, as antileishmanial agent. PLoS One 9(3), e91259 (2014).
  3. Wang, K., Liu, C., Di, C.-J., et al. Kojic acid protects C57BL/6 mice from gamma-irradiation induced damage. Asian Pac. J. Cancer Prev. 15(1), 291-297 (2014).