The Cosmetic Ingredient Review Expert Panel decided that kojic acid is safe to use in cosmetics in concentrations of 1 percent. However, some individuals may still experience side effects or risks from its use. The Food and Drug Administration monitors quality and safety of cosmetics, so be sure to buy products from a reputable company in the United States.
Contact dermatitis is the most common side effect of kojic acid. It can manifest itself as redness, irritation, itchiness, rashes, swollen skin, or pain and discomfort. Contact dermatitis is most common in those with sensitive skin, or in individuals using a product with a higher concentration than 1 percent of kojic acid. Discontinue use if you鈥檙e reacting to a product with kojic acid in it.
Over time, long-term use of kojic acid may make your skin more susceptible to sunburn. Keep this in mind, and be particularly mindful of using sunscreen or wearing protective clothing.
WARNING:
You should never use kojic acid on damaged or broken skin , and never stay too long under the sun.
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