Byproduct of Aspergillus fungal fermentation. Chelates copper, inhibiting tyrosinase. One of the early depigmenting agents with proven efficacy.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
Several RCTs confirmed efficacy in melasma and post-inflammatory hyperpigmentation. A 2013 meta-analysis showed comparable efficacy to hydroquinone but a higher rate of contact dermatitis. In Europe, maximum concentration in cosmetics is restricted to 1%.
1–4%
Irritation potential
MediumAllergen risk
ModeratePregnancy
CautionFor sensitive skin
Risk of contact dermatitis with prolonged use is higher than average.
Suitable for
Use with caution
Kojic Acid should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
Kojic Acid suits: normal, combination, oily. Use with caution in: sensitive, dry.
Kojic Acid has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.
Byproduct of Aspergillus fungal fermentation.
The INCI name is Kojic Acid. It may also appear as: Коевая кислота.
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1–4%