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It is always best to talk to a dermatologist to make sure using products containing kojic acid is safe. Its main function in cosmetology is to prevent the formation of tyrosine, an amino acids that’s required to produce melanin, a pigment that affects skin color.
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 percent.Cosmetic products are not regulated the same way medicines and foods are. Cosmetic products are not required by law to be approved by the United States Food and Drug Administration (FDA) before being sold. You may have gleaned by now that kojic acid is a powerful ingredient. But with great power comes great responsibility — responsibility to weigh any risks and to take the necessary steps to avoid harming your skin.
How Often To Use It: This depends on what other ingredients it's compounded with and the concentration, but generally, it can be used daily. 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. Some people may see results after a few weeks, although it may take longer in certain situations. Products containing kojic acid may only be recommended to be used for a brief time.If you have discoloration or hyperpigmentation from sun damage, melasma, blemishes, scarring or inflammation, using a kojic acid serum or cleanser may help even out your complexion and lighten these areas. Unlike some other skin-lightening ingredients, kojic acid does not cause an overly white reaction, so it may be better suited for people with darker skin for a more subtle effect. 2. Protects the Skin From UV Damage Kojic acid soaps, creams and other products contain antioxidants that have been shown to help fight free radical damage that’s caused by exposure to UV rays and pollution. The antioxidant properties in this natural ingredient allow for its ability to promote healthy aging and a more youth appearance. 3. Has Antibacterial Effects Generally, kojic acid has a poor absorption rate, so it sits on the surface of the skin. There are some products containing the acid that are left on the skin, such as serums and lotions, and some that are washed away, like face cleansers. Benefits/Uses 1. Works to Lighten Skin