It was investigated that natural active products affected the proliferation of B16 melanocyte,the activity of cellular tyrosinase and the synthesis of melanin.The results showed that inhibition of every active material displayed various degrees on cellular proliferation,that each agent reduced the activity of cellular tyrosinase except ginsenoside Rb,and that tea polyphenols,the extracts of honeysuckle flower and grape seeds obviously decreased the content of cellular melanin compared with others.The three ...