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Kojic acid powder

Main Uses Whitening and anti-Freckle
CAS Number: 501-30-4
Molecular Formula: C6H6O4
Molecular Weight: 142.11
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Synonyms: 5-hydroxy-2-(hydroxymethyl)-4H-pyran-4-one, Kojic acid; pure Kojic acid powder
Production Standard: Enterprise Standard
Packing Size: 25kg /Drum, 1kg /Bags, 100g/bag

Kojic acid powder


Product information

Appearance and Properties:

White or white crystalline, soluble in water, insoluble in oil.

Usage and Dosage:

0.5~2%, It is mainly used in cosmetics whitening additives. it should be added in the oil phase when use.

Technical Specifications:




White or off-white crystal powder

Melting point


Loss on drying


Residue on ignition


Heavy metals



≤ 10ppm


≤ 40ppm




Bacteria: ≤300CPU
Fungi: ≤100CPU

Recommend dosage


Shelf Life

2 years


soap or cream

Description and Application:

Kojic acid is a highly effective whitening agent that effectively inhibits the activity of tyrosinase and blocks or delays the formation of melanin. In the non-cellular assay in vitro, can effectively inhibit the activity of tyrosinase, non-competitive inhibition way. It binds to copper ions, causing copper ions to lose their activation of tyrosinase.

Kojic acid is found in people's production activities. It is well known that the skin of workers who make soy sauce, bean paste, and wine is always white. Inspired by this, people extracted this ingredient from filamentous fungi such as Penicillium and Aspergillus. Kojic acid is a safe substance.

Kojic acid is suitable for use in high-end cosmetics such as whitening skin care and freckle. It is widely used as a food antioxidant, antibacterial agent and anti-tarnishing agent. Adding kojic acid to foods can effectively prevent rancidity of oils and inhibit the conversion of sodium nitrite into carcinogenic nitrosamines. Kojic acid has a good food preservation and antiseptic effect.

More Information:

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Biotain Pharma Co., Limited is a professional and reliable manufacturer and supplier of Cosmetic Ingredients . Our products have sold to Australia, European and American countries. Like the skin care Ingredients Kojic acid dipalmitate powder , Kojic acid powder and Tranexamic Acid powder , our Cosmetic Ingredients comply with the USP/EP/BP/JP standard specification.

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