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Kojic Acid

What is kojic acid, exactly? Kojic acid is a natural ingredient widely used to brighten skin and fade pigmentation.

What does kojic acid do? It blocks an enzyme called tyrosinase, which your skin needs to produce melanin (the pigment that gives skin its color). By blocking this enzyme, kojic acid helps fade dark spots and even out your skin tone over time. It also has antioxidant and antimicrobial properties.

How to use it

Choose kojic acid products that stay on your skin longer, like creams and serums, and use them in the evening.

To keep risks low and get the most out of kojic acid benefits, start using products 2-3 times a week to see how your skin reacts. If it's well tolerated, you can move up to daily use. On top of that, always wear sunscreen.

Suitable for

Skin with pigmentation.

Things to know

Here are the main rules to follow to get the most kojic acid benefits for skin:

• Before your first use, apply a small amount to the inside of your elbow or behind your ear, and wait 24-48 hours.
• If you're using other exfoliants (like AHA/BHA acids or retinol), alternate them with kojic acid or use them on different days to avoid severe irritation.
• Wear sunscreen. Without SPF, all your efforts can go to waste, and the pigmentation can come back.

Ingredient Overview

INCI name Kojic Acid
Function Antioxidant, bleaching
CAS number 501-30-4
Chemical formula C6H6O4
Common use Face care

Kojic Acid alternatives

FAQ

1. Is kojic acid an exfoliant?

No, kojic acid isn't an exfoliant in the classic sense, like AHA or BHA acids. Instead, it works by blocking the enzyme tyrosinase, which plays a key role in producing melanin, the pigment responsible for your skin color.

2. How long does kojic acid take to work?

You can start seeing improvements after 2-4 weeks of regular use. More noticeable results (like significant fading of dark spots and a more even skin tone) usually take 6-12 weeks of consistent use.

3. Can kojic acid make you darker?

No, kojic acid doesn't darken skin. One of the main kojic acid benefits is that it does the opposite: it brightens skin by reducing pigment production.