Kojic acid in skin care products: An effective helper for an even complexion

February 2024
The Derma Check AI

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Kojic acid in skin care

  • Type of ingredient: Brightening active ingredient
  • Main benefits: Reduces hyperpigmentation, has a brightening effect, combats age spots
  • Ideal for: Skin with hyperpigmentation, uneven skin tone
  • Frequency of use: According to product instructions, often in serums and creams
  • Combination with: Sun protection, moisturizing ingredients
  • Do not use with: Highly concentrated acids or other strong brighteners without medical advice

What is kojic acid?

Kojic acid is a naturally occurring substance that is extracted from certain types of mushrooms. It is known for its skin-lightening properties and is often used to treat hyperpigmentation and age spots.

Benefits of kojic acid for the skin

  • Reduces hyperpigmentation: Kojic acid helps to reduce dark spots and hyperpigmentation by inhibiting melanin production.
  • Brightening effect: Ensures a more even and lighter skin tone.
  • Combating age spots: Can help improve the appearance of age spots and sun damage.

Possible side effects

  • Skin irritation: Sensitive skin may experience redness, itching and irritation.
  • Increased sensitivity to the sun: The skin can become more sensitive to light, so it is important to use sun protection.

Application recommendations

  • According to product instructions: Kojic acid is found in serums, creams and special treatment products. It should be used according to the instructions of the respective product.
  • Combination with sun protection: To protect the skin from UV-induced damage, sun protection should always be used during the day.

How not to use it

  • Do not combine with strong acids: The combination with highly concentrated acids or other strong brighteners should be avoided without medical advice.
  • Caution for sensitive skin: People with sensitive skin should carry out a skin tolerance test before use.


1 Who is kojic acid suitable for? For people who want to reduce hyperpigmentation, dark spots or an uneven skin tone.

2. can kojic acid bleach the skin? Kojic acid has a whitening effect, but not in the sense of bleaching. It helps to reduce hyperpigmentation.

3. how quickly does kojic acid work? The effect can vary depending on skin type and product, but improvements are often visible after a few weeks of regular use.


Kojic acid is an effective active ingredient for lightening the skin and reducing hyperpigmentation. When used correctly and in combination with sun protection, it can contribute to a more even and lighter skin tone. As with all active ingredients, proper application and consideration of individual skin sensitivities is important to achieve the best results.

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The Derma Check AI
The Derma Check's AI has been trained with the help of numerous scientific studies. She specializes in cosmetic ingredients and their effects.