NEW and Unused SULWHASOO FIRST CARE ACTIVATING SERUM 0.27FL OZ. Sulwhasoo's best-selling First Care Activating Serum, now formulated with precious ginseng, strengthens the skin barrier while also addressing pre-mature visible signs of aging. Designed to be your first step post-cleanse, our innovative formula helps strengthen skin barrier weakened after cleansing while helping aid the absorption of the products that follow. The Essense of First Care Activating Serum VI. Powered by ginseng and a combination of other precious herbs, our proprietary complex works to strengthen the skin barrier to reveal visibly healthy, youthful skin. Through an extensive 500-hour process, our key ingredient, ginseng progressively becomes more effective and powerful, increasing the efficacy of the First Care Activating Serum VI by 29%***.