Water Whitening Yuja Extract 30% Goheung Yuja Brightening Effect Since 1957 A highly concentrated serum that contains organic Goheung yuja extract and oil to lighten melasma and hyperpigmentation. The capsules break as you rub the ampoule onto skin, intensifying its brightening effects. Yuja Yuja extract and essential oil coat the surface of the skin, locking in moisture and brightening skin tones for a soft, glowing appearance.