Kojic Acid

Kojic acid is a fermentation-derived organic compound classified in cosmetics as a chelating agent. It improves the look of uneven tone and dark spots in leave-on products, but it's light-sensitive and needs pH-controlled, protected formulations.
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Ingredient Snapshot

Overview
A brightening ingredient that fades dark spots and evens out tone.
Category
Brightening, Hyperpigmentation
Type
Chelating Agent

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Targets the look of discoloration and dullness, promoting a more even-looking complexion. Helps refine the appearance of dark marks over time when used consistently.

Uses In Skincare & Cosmetics

Common in brightening serums, spot treatments, and essences designed for leave-on use. It may also appear in low-pH gels or creams formulated for tone improvement.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Can cause stinging, dryness, or irritation, especially at higher levels or low pH, and when layered with strong actives. Patch test first and introduce gradually; stop use if persistent redness or burning occurs.

Is Kojic Acid a Good Ingredient?

Rated Good because it's backed by cosmetic research for improving the look of uneven tone when properly formulated, though it's light- and pH-sensitive and can irritate some skin. Its instability means it needs careful formulation and packaging to perform, which keeps it below Great.

Products with Kojic Acid

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