NIB. Never used. Sealed. WHY YOU'LL LOVE IT? This serum rich in vitamin A is designed to improve fatigue and skin dullness around the delicate eye area resulting in a youthful-looking appearance. Proprietary Japanese seaweed encapsulation technology delivers nourishing ingredients, while the humectant-rich base delivers lasting hydration. Layer individually or blend with up to two additional Skin Inc customizable serums to provide optimal results.