Kojic acid
Tone-evening ingredients

Kojic acid.

An ingredient used for the appearance of uneven pigmentation; stability and tolerance require careful formulation.

INCI name
Kojic Acid
Function
A skin-conditioning ingredient in tone-evening formulas.
Information level
Moderate evidence
Last reviewed
22 September 2026
01

What it does

May contribute to a dark-spot strategy alongside sun protection.

02

Who may benefit

Skin with uneven tone, if well tolerated.

03

Compatibility

Niacinamide, vitamin C and SPF.

04

Precautions

May irritate or sensitise; Kojic Dipalmitate is a derivative and is not equivalent to pure kojic acid.

05

How to use it

Morning or evening according to the product.

06

Concentrations

The percentage cannot be inferred from INCI order. WAI LAB shows it only when stated by a verifiable source.

HOW TO READ IT

What it means in the INCI list?

In the European Union, ingredients above 1% are listed in descending order by weight; below 1%, they may appear in any order. Their position therefore cannot be used to calculate an exact percentage.

Its position helps you understand the formula, but does not on its own establish effectiveness or an exact percentage.

SOURCES

Where the information comes from.

WAI LAB distinguishes cosmetic function, regulatory context and scientific literature. This information is not a substitute for medical advice.

FROM UNDERSTANDING TO CHOOSING

Products with Kojic acid.

2 catalogue products list a recognised form of this ingredient in their INCI.

2 resultsVerified profiles with declared concentrations appear first.