Jeju green tangerine's rich green vitamins This product added Jeju Mineral water to green vitamins. The green vitamins of Jeju green tangerine protect skin from active oxygen. Rich in vitamin C helps in collagen synthesis. Jeju seawater, rich in minerals containing calcium and magnesium, moisturizes the skin. No need to reapply! Gel type moist serum for moisturizing without stickiness.