SULWHASOO FIRST CARE ACTIVATING SERUM VI - DELUXE SIZE new in box Why you’ll love it: Sulwhasoo’s original First Care Activating Serum is so popular that one sells every 10 seconds. Now, the K-beauty brand has updated its beloved prep step by adding antioxidant ginseng for a pampering serum that’s chock-full of hydrating, brightening ingredients. How you’ll use it: Apply the serum on clean, dry skin (morning and/or night) and layer your usual products on top.