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Lately I cant scroll through TikTok without seeing videos about kojic acid.

three kojic acid bars stacked on top of one another

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But the hype isnt all that it seems.

What exactly is kojic acid?

What are the skin-care benefits of kojic acid?

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If you have sensitive skin, proceed with caution when using kojic acid.

How long does it take to see results?

Significant results can be expected at the three-month mark.

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Dr. Mitchell calls it a great option for those looking to brighten their complexion while maintaining hydration.

Dr. Kapoor also loves the Dr. Idriss Major Fade Hyper Serum.

[This serum] brings down the darkness without lightening my olive skin."

Dr. Idriss Major Fade Hyper Serum in branded purple component on light gray background

Kojic acid needs to sit on the skin and penetrate for it to be effective, says Dr. Kapoor.

If used in a wash-off product, it may not work at all.

Dr. Li tried a kojic acid soap for himself and says it made his skin feel tight.

Topicals Faded Brightening & Clearing Serum pink tube on light gray background

They, too, require rinsing and may not allow the ingredient enough time to work its magic.

User error is also common with these products.

More skin-care recommendations, ahead:

Now, watch Sydney Sweeney’s 10-minute beauty routine for sensitive skin:

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