Kojic acid prevents the formation of tyrosine, which is an amino acid that produces melanin. Melanin causes pigmentation. Kojic acid can help to lighten pigmentation and have an anti-aging effect on the skin. It also has some antibacterial properties so it can improve acne.
It is an ingredient found in concentrations of 1% or less that can help reduce pigmentation in melasma, sun spots or scars.
Generally yes, but those with sensitive skin should be cautious as it can cause contact dermatitis. If used long term, it can also make your skin more sensitive to the sun. It should not be used to lighten your natural skin color.
Redness, itching or irritation could be signs of contact dermatitis.
Petak, Tesa. “Kojic acid for skin.” In Style. Aug 2022
Saeedi M, Eslamifar M, Khezri K. Kojic acid applications in cosmetic and pharmaceutical preparations. Biomed Pharmacother. 2019 Feb;110:582-593. doi: 10.1016/j.biopha.2018.12.006.
Zachary CM, Wang JV, Saedi N. Kojic Acid for Melasma: Popular Ingredient in Skincare Products. Skinmed. 2020 Oct 1;18(5):271-273. eCollection 2020.
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