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Kojic Acid

What Kojic Acid is & what it does

A fungal-derived brightener that helps fade the look of dark spots and even tone by inhibiting pigment formation. It can be sensitizing for some and is light-unstable.

What does Kojic Acid do in skincare?

Kojic Acid is a compound often produced from fungi during fermentation and is used in skincare for its association with brightening and evening the look of skin tone. It is commonly included in products aimed at the appearance of dark spots and uneven tone. Its cosmetic role is focused on the look of the skin rather than any treatment claim.

Is Kojic Acid safe?

Kojic Acid is a long-used cosmetic ingredient generally considered acceptable for topical use within customary concentrations. Some people can experience irritation or sensitivity, and it may make skin feel more reactive to sun, so daytime sunscreen is sensible. If you have sensitive skin, patch testing and following the product directions is wise.

Is Kojic Acid natural or synthetic?

Kojic Acid is typically derived from natural fermentation processes involving certain fungi, though it can also be produced through controlled manufacturing. In both cases the resulting molecule is the same. It is often described as a naturally sourced ingredient.

Sunscreens with Kojic Acid

We rate 22 sunscreens that contain it, showing the top 10 by overall score:

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