The most important uses of kojic acid in cosmetics are as follows:
Kojic acid is used as a bleaching agent and to protect the skin against the effects of ultraviolet rays in cosmetic products. It’s also used as a teeth whitening ingredient in oral care products.
Several studies have been performed to evaluate the mechanism of pigmentation reduction and the safety of kojic acid in cosmetics. Accordingly, the best recommended concentration range for topical kojic acid preparations is 1% or less to ensure efficacy and safety.
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%.
Comments
Share your thoughts
Be the first to let Hello Doctor know your thoughts!
Join Us or Log In to join the discussion