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Abstract
In this study, we examined the effects of theaflavins, polyphenols in black tea, on α melanocyte-stimulating hormone (αMSH)-induced melanogenesis in mouse B16 melanoma cells. Among theaflavins, theaflavin-3,3′-digallate (TF-3) exhibited a potent inhibitory effect on melanogenesis. Our results indicate that the inhibitory effect of TF-3 on melanogenesis is due to suppression of tyrosinase protein and mRNA levels.