Kojic acid is used in cosmetics. In human skin, tyrosine is catalyzed by tyrosinase and oxygen free radicals through complex oxidation, polymerization, and finally synthesis of melanin.Kojic acid can inhibit the synthesis of tyrosinase,
and thus can strongly inhibit the formation of melanin, and safe non-toxic, does not produce white spot sequela, so kojic acid has been allocated into lotion, facial mask, lotions, creams, can effective treatment of freckles,
age spots, pigmentation, acne and other high-grade whitening cosmetics.Kojic acid at the concentration of 20ug/ml can inhibit the 70-80% activity of various tyrosinase (or PPO), and the general added amount in cosmetics is 0.5 ~ 2.0%.
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