abstract |
The present invention provides a novel whitening agent and a skin external preparation excellent in whitening effect. Among sesquiterpene lactones having a germacrane skeleton extracted from plants of the family Compositae, molephentin, molephantin, 2-deoxy-2-hydroxyphantomolin, 2-deoxy methoxyphentomolin, phentomolin, 2-deoxy-2- (3′-hydroxybutyoxy) phentomolin, 2-deoxy-2- (3′-hydroxyloxy-1′-methylpropyoxy, phentomolin, phentopentineB, ephantopin, isodeoxyelephantopin, and made of isoelephantopin, 15-ethoxy-4αH-isocentratherin one or two or more. [Selection figure] None |