Tyrosainase inhibitor effect : kurarinol exhibits strong, specific tyrosinase inhibition, whilst also displaying relatively low toxicity. The 500-hydroxy lavandulyl group within kurarinol may contribute to its competitive inhibition and play a key role in the interaction between enzyme active site and kurarinol. Thus, we are currently investigating a range of flavanones bearing a 500-hydroxyl lavandulyl group to design safe and effective tyrosinase inhibitor.