Besides that, another benefit of kojic acid has been showing antibacterial properties that can kill some common bacteria (e.g. acne-causing bacteria) even in small dilutions. Studies have also shown that kojic acid has the ability to fight fungi that live and cause disease on the skin.
Kojic acid side effects
In addition to the benefits, a number of adverse reactions may also be associated with kojic acid when used in cosmetic products.
Among them, contact dermatitis (especially on people with sensitive skin) is the main side effect of kojic acid. Manifestations of contact dermatitis when using kojic acid are irritation, rash, dermatitis, itching, and pain. However, these side effects can be observed in cases of improper use of kojic acid and abuse of kojic acid such as taking in concentrations higher than 1%.
Another side effect that can appear with long-term use of kojic acid is sunburn in people with sensitive skin. In addition, there is some evidence that kojic acid can also lead to skin cancer on damaged skin. However, further studies are still needed to determine other potential benefits or risks of kojic acid.
Is it safe for skin?
Despite its “acid” moniker, kojic acid is safe to use. Though it’s not recommended to use it to lighten your complexion. While you may notice some bleaching effects, your skin will eventually shift back to its natural state once you discontinue use. Using excessive amounts of the ingredient can cause some serious irritation. Instead, use kojic acid-infused products to fade age spots, sun spots, or those post-breakout marks.
Who can benefit from kojic acid use?
If you have a tendency to have an uneven and pigmented complexion, kojic acid could be very beneficial to you. It works well on pigmentation from sun-damage, melasma, or the common post-inflammatory pigmentation, dark spots that occur after acne, bug bites, or injuries. It can even improve under eye circles that are a result of hyperpigmentation. Though it won’t do much for puffiness, hollowing, or thin skin with visible blood vessels.
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