What is Kojic Acid and it’s uses

Kojic acid is a chemical derived from mushrooms, and can also be created during the sake brewing process from fermented rice. Because of its ability to penetrate the layers of your skin and stop the production of melanin, kojic acid is an effective spot-fading treatment, and is often considered a less-aggressive answer to hydroquinone. According to Dr. Jennifer MacGregor, a board-certified dermatologist at Union Square Laser Dermatology, it can be used as a skin brightener and even on produce to prevent browning. “It is a popular skincare ingredient because it is a well-known and studied inhibitor of tyrosinase (the melanin-forming enzyme) in the skin.”

Kojic acid is sometimes used in health and beauty products to lighten the skin. It may be used to treat skin conditions, such as sun damage, scars, and age spots.

The science behind how kojic acid works as a lightening agent involves its effect on melanin production.

Melanin is a naturally occurring pigment in the body that gives the eyes, hair, and skin their color. An amino acid called tyrosine is needed to support the production of melanin.

Kojic acid works by blocking tyrosine from forming, which then prevents melanin production. Decreased melanin production may have a lightening effect on the skin.

Kojic acid is most commonly used in cosmetic products, such as creams, lotions, and serums. It is also used in some soaps. Many products with kojic acid are intended for use on the hands or face.

Products containing kojic acid can also be used on other parts of the body, such as the legs and arms. The concentration of kojic acid in cosmetics is often between 1 and 4 percentTrusted Source.

Certain products containing kojic acid, such as serums, are meant to be applied to the skin and left on and absorbed. Some products, such as soaps, are applied and washed off.

Benefits

The benefits of using products containing kojic acid may include the following:

  • Anti-aging effect: Products containing kojic acid may lighten the skin, which can improve the appearance of age spots and sun damage. The reduction of dark spots can have an anti-aging effect.
  • Treat melasma: Kojic acid may also be helpful in decreasing melasma, which is darkening of the skin due to pregnancy.
  • Decrease the appearance of scars: Kojic acid may also reduce the discoloration of scars. Although the acid does not improve the thickness of scar tissue, it may reduce dark pigmentation associated with certain types of scars. Lightening the scar may make it less noticeable.
  • Antifungal benefits: Kojic acid is also thought to have some antifungal benefits. It may be helpful in preventing and treating certain fungal infections, such as athlete’s foot and yeast infections.
  • Antibacterial effects: Kojic acid may also provide antibacterial benefits. It may help decrease the chances of developing common types of bacterial skin infections.

Kojic acid may be helpful for people who have dark spots on their skin due to sun damage, aging, or scars. Some people with certain skin conditions or allergies may be advised not to use kojic acid, however.

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