Description: Kojic acid (5-hydroxy-2-hydroxymethyl-4-pyrone) is a by-product in the fermentation process of malting rice. Mild inhibitor of the formation of pigment in plant and animal tissues. Off-white powder. Soluble in water.
Use: Recommended concentration 1-3%. Add to warm (25-40°C/77-104°F) water phase of formula. It can oxidize and lose some of its activity if put into hot water (>40°C/104°F). Can be combined with other skin lighteners. Kojic acid has tendency to oxidize over time; use vitamin E tocopherol or BHT in the cream to reduce oxidation. For external use only.
Applications: All kinds of skin-lightening products including lotions, creams, fluids, makeup products.