Kojic Acid Explained: Uses, Limits and Cautions

Kojic acid is derived from fungi and is widely used in skincare to help with uneven tone and dark spots. Because it is so widely sold, it is important to understand it properly.

What it does

Kojic acid can help reduce the appearance of dark spots over time by affecting melanin production. Results are usually gradual, often several weeks to months.

Limits

• It is not a cure for melasma or other pigment conditions.
• It can irritate sensitive skin.
• It does not protect against the sun, so daily sunscreen is still essential.

Safety points

• Never use products that contain mercury or unknown ingredients.
• Avoid products that promise to lighten the whole body quickly.
• Stop if you notice stinging, redness or rash.
• Check with your doctor before use if you are pregnant or breastfeeding, as data is limited.

Choosing a product

Look for a clear ingredient list and, where it is stated, a known concentration. Options in our range include the Derma Co 2% Kojic Acid Face Serum. Check each product page for full ingredient details before you buy.

This article is general information only. For persistent or concerning pigmentation, speak to a dermatologist.